| Section
| Date
| Issue
| Size
| Title
| Included App/Dwg
|
| CD-1A107-01 | | 5D | 1.71 MB | Electronic Switching Systems - No. 1 - Arranged with 2-Wire and Data Features - Trunk Switching Circuit | Iss 5D Dwg 16D; App 1B Dwg 17B
|
| CD-1A110-01 | | 5B | 243.05 KB | Electronic Switching Systems - Common Junctor Circuit | Iss 5B Dwg 6B; App 1D Dwg 7D; App 2D Dwg 8D; App 3B Dwg 9B; App 4D Dwg 10D
|
| CD-1A140-01 | | 1D | 33.61 KB | Electronic Switching Systems - No. 1 - Line Insulation Test - Detector Circuit | Iss 1D Dwg 3D
|
| CD-1A145-01 | | 1A | 176.97 KB | Electronic Switching Systems - No. 1 - Loop-Around-Test Circuit | Iss 1A Dwg 2A; App 1D Dwg 3D
|
| CD-1A151-01 | | 2A | 778.84 KB | Electronic Switching Systems - No. 1 - "TOUCH-TONE" Detector - Test Circuit | Iss 2A Dwg 5A; App 1B Dwg 6B; App 2D Dwg 7D; App 3AR Dwg 8AR
|
| CD-1A153-01 | | 7B | 406.42 KB | Electronic Switching Systems - Common - Test Circuit for Ringing and Coin Control Circuits | Iss 7B Dwg 19B; App 1B Dwg 20B
|
| CD-1A199-01 | | 2AC | 1.66 MB | Electronic Switching Systems - No. 1 or 2 Arranged with 2-Wire Features - "TOUCH-TONE" Station Test Circuit | Iss 2AC Dwg 12AC; App 1B Dwg 13B; App 2B Dwg 14B; App 3A Dwg 15A
|
| CD-1A210-01 | | 7D | 588.30 KB | Electronic Switching Systems - Common - Remote Master Scanner Applique Circuit | Iss 7D Dwg 11D; App 1B Dwg 12B; App 2D Dwg 13D; App 3D Dwg 14D
|
| CD-1A246-01 | | 3B | 590.22 KB | Electronic Switching Systems - Common - MF Receiver Circuit | Iss 3B Dwg 8B; App 1D Dwg 9D; App 2B Dwg 10B
|
| CD-1A277-01 | | 2AC | 1.03 MB | Electronic Switching Systems - Common - Dial Tone Delay Alarm Circuit | Iss 2AC Dwg 5AC; App 1D Dwg 6D; App 2D Dwg 7D; App 3D Dwg 8D
|
| CD-1A277-01 | | 3B | 321.73 KB | Electronic Switching Systems - Common - Dial Tone Delay Alarm Circuit | Iss 3B Dwg 10B; App 1D Dwg 11D
|
| CD-1A481-01 | | 1 | 329.32 KB | Electronic Switching Systems - Common - 3A Auxiliary Processor/Peripheral Data Storage Processor (PDSP) Circuit - Application Schematic | App 1D Dwg 2D; App 2AC Dwg 3AC
|
| CD-1C240-02 | | 4B | 1.59 MB | Common Systems - Signaling - Application Schematic and Bay Wiring for FU( ) Plus Auxiliary Units for Use in the F Signaling System | Iss 4B Dwg 7B; App 1B Dwg 8B; App 2B Dwg 9B; App 3B Dwg 10B
|
| CD-1C297-01 | | 9B | 2.22 MB | Common Systems - Coin Station Test Line Circuit for Use with SXS, No. 1 Crossbar, No. 5 Crossbar, Panel, ESS No. 1 and ESS No. 2 Systems | Iss 9B Dwg 19B; App 1B Dwg 20B
|
| CD-1C375-01 | | 2B | 1.33 MB | Common Systems - Voice Frequency Transmission - Consolidated Dual F-Signaling and Optional Maintenance Connector Circuit with 4W VF Patch Jacks | Iss 2B Dwg 13B
|
| CD-1C454-01 | | 2A | 1.62 MB | Common Systems - Voice Frequency Transmission - Switched Maintenance Access System No. 3A, 3B, 3C and No. 5( ) - Type 2 and 2B Maintenance Connector Circuit and Type 2BX Cord Access Maintenance Connector Circuit | Iss 2A Dwg 2A; App 1B Dwg 3B; App 2B Dwg 4B; App 3B Dwg 5B; App 4AC Dwg 6AC; App 5D Dwg 7D; App 6D Dwg 8D
|
| CD-1C605-01 | | 2B | 973.97 KB | Common Systems - Voice Frequency Transmission - Switched Maintenance Access System No. 3A, 3B, and 3C - Type 3 Maintenance Connector | Iss 2B Dwg 2B; App 1A Dwg 3A; App 2D Dwg 4D; App 3D Dwg 5D
|
| CD-1C605-02 | | 1 | 1.01 MB | Common Systems - Voice Frequency Transmission - Switched Maintenance Access System No. 3A, 3B, and 3C and No. 5( ) - Type 3 Maintenance Connector Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D
|
| CD-1C900-01 | | 1 | 1.73 MB | Common System - 3A Central Control Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2A Dwg 3A; App 3A Dwg 4A; App 4A Dwg 5A; App 5D Dwg 6D; App 6D Dwg 7D
|
| CD-1C901-01 | | 2D | 1.27 MB | Common Systems - 3A CC Control Panel Circuit | Iss 2D Dwg 2D; App 1AR Dwg 3AR; App 2D Dwg 4D
|
| CD-1C902-03 | | 1 | 3.56 MB | Common Systems - Main Store Controller and Memory Circuit | Iss 1 Dwg 1
|
| CD-1C903-02 | | 1 | 892.68 KB | Common Systems - Main Store Memory Circuit | Iss 1 Dwg 1; App 1D Dwg 2D
|
| CD-1C904-01 | | 2AC | 1022.04 KB | Common Systems - Tape Data Controller Circuit | Iss 2AC Dwg 5AC
|
| CD-1C905-01 | | 3A | 2.16 MB | Common Systems - Teletypewriter Controller Unit Circuit | Iss 3A Dwg 4A; App 1AC Dwg 5AC; App 2A Dwg 6A; App 3AC Dwg 7AC
|
| CD-1C906-01 | | 2A | 918.08 KB | Common Systems - System Status Panel Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2D Dwg 4D; App 3B Dwg 5B
|
| CD-1C907-01 | | 2A | 1.94 MB | Common Systems - System Status Panel Controller Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2A Dwg 4A; App 3D Dwg 5D
|
| CD-1C908-01 | | 2A | 933.93 KB | Common Systems - System Status Panel Relay Circuit | Iss 2A Dwg 2A
|
| CD-1C909-01 | | 2A | 1.20 MB | Common Systems - Maintenance Frame Power Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2A Dwg 4A; App 3B Dwg 5B
|
| CD-1C910-02 | | 1 | 2.16 MB | Common Systems - Processor Frame Circuit Arranged for No. 2B or 3 ESS | Iss 1 Dwg 1; App 10B Dwg 11B; App 1A Dwg 2A; App 2D Dwg 3D; App 3B Dwg 4B; App 4A Dwg 5A; App 5D Dwg 6D; App 6B Dwg 7B; App 7B Dwg 8B; App 8A Dwg 9A; App 9B Dwg 10B
|
| CD-1C911-02 | | 1 | 1.39 MB | Common Systems - Processor Frame Power Circuit | Iss 1 Dwg 1
|
| CD-1C912-01 | | 3B | 980.10 KB | Common Systems - Maintenance Frame Circuit Arranged for ESS No. 2B and 3 | Iss 3B Dwg 11B; App 1B Dwg 12B; App 2BU Dwg 13BU; App 3B Dwg 14B; App 4B Dwg 15B
|
| CD-1C913-01 | | 2A | 1.70 MB | Common Systems - Electronic Remreed Pulser Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2AR Dwg 4AR; App 3AC Dwg 5AC; App 4A Dwg 6A; App 5A Dwg 7A
|
| CD-1D243-01 | | 3B1 | 1.40 MB | Data Systems - Station - Data Set 202T Type - 39A1 Data Mounting and 40B1 Data Mounting | Iss 3B1 Dwg 6B1
|
| CD-1D295-01 | | 2A | 392.28 KB | Data Systems - Station - 63 and 64 Type Data Mountings | Iss 2A Dwg 2A; App 1B Dwg 3B; App 2A Dwg 4A; App 3B Dwg 5B
|
| CD-1E046-01 | | 1 | 2.55 MB | PBX Systems - No. 551A, B, 552B, D, E, 555, 556A, 605A, 608A, B, D - Manual PBX Access Line with E and M Lead Signaling | Iss 1 Dwg 1; App 1A Dwg 2A; App 2B Dwg 3B; App 3B Dwg 4B
|
| CD-1E054-01 | | 3B | 485.44 KB | PBX Systems - Interface Circuit - "TOUCH-TONE" Calling to Dial Pulse Conversion | Iss 3B Dwg 6B; App 1B Dwg 7B; App 2B Dwg 8B
|
| CD-1H020-01 | | 3D | 333.00 KB | Electronic Switching Systems - No. 101 - Tone Generators Circuit for Switch Unit | Iss 3D Dwg I6D; App 1D Dwg 7D
|
| CD-1H021-01 | | 2D | 440.50 KB | Electronic Switching Systems - No. 101 - Data Link Transfer Circuit for Switch Unit | Iss 2D Dwg 3D; App 1D Dwg 4D
|
| CD-1H022-01 | | 5D | 392.78 KB | Electronic Switching Systems - No. 101 - Ringing Generator Circuit for Switch Unit | Iss 5D Dwg 5D; App 1D Dwg 6D
|
| CD-1P106-01 | | 4B | 3.76 MB | Operations Support Systems - Common - Switched Maintenance Access System No. 5A - Local Test Port and Distribution Circuit | Iss 4B Dwg 6B; App 1A Dwg 7A; App 2B Dwg 8B; App 3AC Dwg 9AC
|
| CD-1P107-01 | | 4A | 2.53 MB | Operations Support Systems - Common - SMAS 5A/B & RTS 5A - Control Circuit | Iss 4A Dwg 6A; App 10B Dwg 16B; App 1B Dwg 7B; App 2A Dwg 8A; App 3B Dwg 9B; App 4A Dwg 10A; App 5B Dwg 11B; App 6A Dwg 12A; App 7B Dwg 13B; App 8B Dwg 14B; App 9A Dwg 15A
|
| CD-1P108-01 | | 2A | 2.35 MB | Operations Support Systems - Common - RTS 5A - Remote Test Port | Iss 2A Dwg 3A; App 1B Dwg 4B; App 2D Dwg 5D; App 3A Dwg 6A; App 4D Dwg 7D
|
| CD-1P109-01 | | 3B | 1.85 MB | Operations Support Systems - Common - Remote Test System 5A - RTS 5A Frame Circuit | Iss 3B Dwg 4B; App 1B Dwg 5B; App 2B Dwg 6B; App 3B Dwg 7B; App 4B Dwg 8B; App 5AR Dwg 9AR; App 6B Dwg 10B
|
| CD-1P110-01 | | 1 | 542.48 KB | Operations Support Systems - Common - Switched Maintenance Access System No. 5A - Phantom Maintenance Connector Circuit | Iss 1 Dwg 1
|
| CD-1P111-01 | | 1 | 531.20 KB | Operations Support Systems - Common - Switched Maintenance Access System No. 5A - Remote Maintenance Loop Circuit | Iss 1 Dwg 1
|
| CD-1P138-01 | | 3B | 1.09 MB | Operations Support Systems - Maintenance Connector - Application Schematic for Switched Maintenance Access System (SMAS) 3 and 5 | Iss 3B Dwg 4B
|
| CD-20127-01 | 1928-03-20 | 4D | 245.51 KB | Panel System - Test Set Circuit - Tripping Relay Adjusting Set for Use in Offices Using AC-DC Ringing | Iss 4D Dwg 4D
|
| CD-21349-01 | 1929-05-20 | 2AR | 282.72 KB | Panel System - 2 Wire Recording Completing Trunk Outgoing to Toll Switchboard No. 1 or No. 3 Arranged to Recall the Subscriber | Iss 2AR Dwg 2AR
|
| CD-25600-01 | | 1 | 1.40 MB | Crossbar Systems - No. 1 - Recorder Circuit for Use in Offices Arranged for Automatic Message Accounting | Iss 1 Dwg 1
|
| CD-25721-01 | | 4D | 180.85 KB | Crossbar Systems - No. 5 - Coin Supervisory Concentrating Circuit | Iss 4D Dwg 12D; App 1B Dwg 13B
|
| CD-25805-01 | | 15B | 13.64 MB | Crossbar Systems - No. 5 - Master Test Frame Connector Ckt | Iss 15B Dwg 92B
|
| CD-26026-01 | | 8D | 131.95 KB | Crossbar Systems - No. 5 - Incoming Register Marker - Connector Circuit - Register Part for DP, MF, RP, and FSP Incoming Registers and CAMA Senders | App 4B Dwg 24B
|
| CD-2A022-01 | | 3AR | 296.31 KB | Electronic Switching Systems - No. 1 Arranged with 4-Wire Features - Code "102" and "106" Test Trunk Circuit | Iss 3AR Dwg 4AR; App 1A Dwg 5A
|
| CD-2H003-01 | | 7A | 761.68 KB | Electronic Switching Systems - No. 2 Arranged with 2-Wire Features - Circuit Pack Schematics | Iss 7A Dwg 25A
|
| CD-2H192-01 | | 1 | 721.18 KB | Electronic Switching Systems - No. 2 Arranged with 2-Wire Features Processor - DC Power Distribution Circuit for Use with No. 2B | Iss 1 Dwg 1; App 1A Dwg 2A; App 2D Dwg 3D; App 3D Dwg 4D
|
| CD-2P021-01 | | 2B | 2.32 MB | Operations Support Systems - Common - E2A Telemetry System - SCC Remote - Application Schematic | Iss 2B Dwg 2B; App 1A Dwg 3A
|
| CD-2P077-01 | | 3A | 737.21 KB | Operations Support Systems - Common - Directly Connected Test Unit Circuit | Iss 3A Dwg 3A; App 10AC Dwg 13AC; App 11A Dwg 14A; App 12A Dwg 15A; App 1B Dwg 4B; App 2B Dwg 5B; App 3A Dwg 6A; App 4B Dwg 7B; App 5B Dwg 8B; App 6A Dwg 9A; App 7AC Dwg 10AC; App 8B Dwg 11B; App 9A Dwg 12A
|
| CD-30200-01 | | 5D | 390.52 KB | Step by Step Systems - No. 1, 350A or 355A - 3 Wire Selector Circuit for Use as a Local or Incoming Selector or as a Repeated Dialing Toll Train Selector | Iss 5D Dwg 24D; App 1D Dwg 25D; App 2D Dwg 26D; App 3D Dwg 27D
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| CD-30200-02 | | 3D | 255.22 KB | Step by Step Systems - No. 360A - Local or Incoming Selector Circuit | Iss 3D Dwg 8D; App 1D Dwg 9D; App 2AR Dwg 10AR; App 3D Dwg 11D
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| CD-30200-03 | | 3D | 272.34 KB | Step-by-Step Systems - No. 1 or 350A - Local Selector Circuit Arranged for Sleeve Repeating on Any or All Levels | Iss 3D Dwg 4D; App 1D Dwg 5D
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| CD-30243-01 | | 5D | 208.31 KB | Step-by-Step Systems - No. 1, 350A, 355A or 35-E-97 - Test Connector Circuit for Use in Testing Subscriber Lines and for Use in Verification Service | Iss 5D Dwg 20D; App 1D Dwg 21D; App 2D Dwg 22D
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| CD-30868-01 | | 8B | 1.07 MB | Step by Step Systems - No. 1, 350A, 355A or 35E97 - Rotary Out Trunk Switch Circuit - 3 or 4 Wire Arranged for Pre-Selection | Iss 8B Dwg 17B; App 1D Dwg 18D
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| CD-30868-02 | | 2B | 770.75 KB | Step by Step Systems - No. 1, 350A, 355A or 35-E-97 - Rotary Out Trunk Switch Circuit - 3 or 4 Wire Arranged for Preselection | Iss 2B Dwg 6B; App 1B Dwg 7B; App 2B Dwg 8B
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| CD-30896-01 | | 9D | 899.30 KB | Step-by-Step Systems - No. 1 or 350A - Traffic Register Circuit | Iss 9D Dwg 24D; App 1B Dwg 25B; App 2D Dwg 26D; App 3B Dwg 27B
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| CD-30903-01 | | 3B | 275.55 KB | Step by Step Systems - 35-E-97 - Local Connector Circuit - One Ring Generator Connected to Ground or to Battery | Iss 3B Dwg 8B
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| CD-30976-01 | | 4D | 660.06 KB | Step-by-Step Systems - No. 1, 350A, 355A, 356A or 360A - 3 or 4 Wire Selector Arranged for Peg Count on Cut Thru to Absorb Digits Once Only and/or Repeatedly and to Return Overflow Signal on Specififed Levels - No. 1 or 350A for 2 Party Message Rate Service - No. 355A or 356A Arranged for Timed Release on Permanent Signal | Iss 4D Dwg 16D; App 1D Dwg 17D; App 2B Dwg 18B; App 3D Dwg 19D; App 4B Dwg 20B; App 5B Dwg 21B; App 6D Dwg 22D; App 7B Dwg 23B
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| CD-30978-01 | | 2D | 479.18 KB | Step by Step Systems - No. 1, 350A, 355A or 356A - Selector-Circuit - Reverting Call 8 Party Semi-Selective Ringing and/or 4 Party Selective or Semi-Selective Ringing Arranged for 2 Digit Operation | Iss 2D Dwg 5D; App 1D Dwg 6D; App 2B Dwg 7B; App 3D Dwg 8D; App 4D Dwg 9D; App 5B Dwg 10B
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| CD-31237-01 | | 4D | 842.17 KB | Step by Step System - No. 1, 350A or 355A - Test Trunk Ringing Circuit from Local Test Desk No. 14 or Local Test Cabinet No. 3 - Selective Superimposed Ringing | Iss 4D Dwg 8D; App 1B Dwg 9B; App 2B Dwg 10B; App 3D Dwg 11D; App 4D Dwg 12D; App 5D Dwg 13D
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| CD-31337-01 | | 4D | 324.59 KB | Step by Step Systems - No. 1, 350A or 355A - Intercepting Trunk Circuit from Connector or Toll Train Selector Multiple or From Auxiliary Intercepting Trunk for 8 Pty Tpl Connector Multiple | Iss 4D Dwg 14D; App 1D Dwg 15D
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| CD-31349-01 | | 4D | 700.79 KB | Step by Step System - No. 1, 350A or 355A - Test Distributor Control Circuit for Use in Testing Subscriber Lines from Local Test Desk No. 14 | Iss 4D Dwg 5D; App 1D Dwg 6D; App 2D Dwg 7D; App 3D Dwg 8D; App 4D Dwg 9D; App 5D Dwg 10D
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| CD-31401-01 | | 2D | 852.87 KB | Step-by-Step Systems - No. 1 or 350A - Test Distributor Control Circuit for Use in Testing Subscriber Lines from Local Test Desk No. 14 Arranged for Permanent Signal Tests | Iss 2D Dwg 3D; App 1D Dwg 4D; App 2D Dwg 5D; App 3D Dwg 6D; App 4D Dwg 7D; App 5D Dwg 8D; App 6D Dwg 9D; App 7D Dwg 10D
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| CD-31401-01 | | 3B | 513.38 KB | Step-by-Step Systems - No. 1, 350A, 355A or 35E97 - Test Distributor Control Circuit for Use in Testing Subscriber Lines from Local Test Desk No. 14 Arranged for Permanent Signal Tests | Iss 3B Dwg 12D; App 1D Dwg 13D; App 2D Dwg 14D; App 3D Dwg 15D
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| CD-31402-01 | | 1 | 868.34 KB | Step-by-Step Systems - No. 1 or 350A - Permanent Signal Test Circuit for Use in Testing Subscriber Lines from Local Test Desk No. 12C or No. 14 | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4B Dwg 5B; App 5D Dwg 6D; App 6D Dwg 7D
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| CD-31402-01 | | 2D | 621.07 KB | Step-by-Step Systems - No. 1, 350A, 355A, or 35E97 - Permanent Signal Test Circuit for Use in Testing Subscriber Linefrom Local Test Desk No. 12C or 14 | Iss 2D Dwg 8D
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| CD-31592-01 | | 9D | 994.90 KB | Step by Step Systems - No. 1, 350A, 355A, 360A or 35E97 - Coin Trunk Circuit for Use Preceding a First Selector Serving Prepayment Coin Lines Arranged for Delayed Charging and Overtime Charging | Iss 9D Dwg 21D; App 1D Dwg 22D; App 2D Dwg 23D; App 3B Dwg 24B
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| CD-31606-01 | | 10D | 911.75 KB | Step-by-Step Systems - No. 1 or 350A - 30, 60, 120 IPM Interrupter and Interrupter Alarm Circuit | Iss 10D Dwg 24D; App 1D Dwg 25D; App 2D Dwg 26D
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| CD-31637-01 | | 9AR | 1.44 MB | Step-by-Step Systems - No. 1 - Test Set Circuit for Testing Local, Toll, and Combination Local and Toll Connectors | Iss 9AR Dwg 15AR; App 1D Dwg 16D
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| CD-31637-02 | | 3D | 1.52 MB | Step by Step Systems - No. 1 - Test Set Circuit for Testing Local, Toll and Combination Local and Toll Connectors | Iss 3D Dwg 6D; App 1D Dwg 7D; App 2D Dwg 8D
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| CD-31642-01 | | 3D | 671.58 KB | Step by Step System - No. 1, 350A, or 355A - Test Line Circuit for Testing Trunks Incoming from Local Office Coin Box Trunks, or Trunk Circuits with Delayed Charge Interval for Operating Subscriber Register | Iss 3D Dwg 8D
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| CD-31674-01 | | 3D | 487.49 KB | Step by Step Systems - No. 1, 350A, 355A, 360A, 370A or 370B - 2-Way Repeater Circuit - Outgoing-Battery and Ground Pulsing with Loop Supervision - Incoming - Arranged for Pulse Transmission | Iss 3D Dwg 9D; App 1B Dwg 10B; App 2D Dwg 11D; App 3D Dwg 12D; App 4D Dwg 13D
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| CD-31726-01 | | 5B | 963.36 KB | Step-by-Step Systems - No. 1, 350A, 355A or 35E97 - Incoming Trunk Circuit - E, M and N or E and M Leads Supervision | Iss 5B Dwg 12B; App 1D Dwg 13D; App 2D Dwg 14D
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| CD-31737-01 | | 5D | 589.48 KB | Step-by-Step Systems - No. 1, 350A or 355A - Local Connector Circuit - One Ring | Iss 5D Dwg 17D; App 1B Dwg 18B; App 2D Dwg 19D; App 3D Dwg 20D
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| CD-31738-01 | | 7D | 640.58 KB | Step-by-Step Systems - No. 1, 350A or 355A - Connector Circuit - Local Rotary Hunting - Selective or One Ring Semi-Selective Ringing with or without Arrangement to Cancel Reverse Battery Supervision on Specified Levels | Iss 7D Dwg 23D; App 1D Dwg 24D
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| CD-31739-01 | | 3D | 702.25 KB | Step-by-Step Systems - No. 1, 350A or 355A - Combination Connector Circuit - One Ring with or without Reverse Battery Supervision | Iss 3D Dwg 14D; App 1B Dwg 15B; App 2D Dwg 16D; App 3B Dwg 17B; App 4AR Dwg 18AR; App 5D Dwg 19D
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| CD-31767-01 | | 3B | 383.65 KB | Step by Step Systems - No. 1, 350A or 355A - Intercepting Trunk Circuit from Local Selector Multiple | Iss 3B Dwg 8B; App 1D Dwg 9D; App 2B Dwg 10B; App 3D Dwg 11D
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| CD-31771-01 | | 6D | 610.11 KB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Intercepting Trunk Circuit from Trunk Finder, Connector Bank or Intercepting Trunk, to Trunk to Operator Office - Arranged to Trip Ringing Only During Ringing Interval | Iss 6D Dwg 14D
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| CD-31773-01 | | 2D | 447.26 KB | Step by Step Systems - No. 1, 350A, 355A or 356A - Test Connector Circuit for Use with Multi Party - One or Two Terminal Per Line Service | Iss 2D Dwg 4D; App 1D Dwg 5D; App 2D Dwg 6D; App 3D Dwg 7D; App 4D Dwg 8D; App 5D Dwg 9D; App 6D Dwg 10D; App 7D Dwg 11D
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| CD-31775-01 | | 11B | 578.01 KB | Step-by-Step Systems - No. 1, 350A or 355A - 2 Way Trunk Circuit to Manual or Toll Office - Composite Signaling Type B - Incoming to Local Switchtrain | Iss 11B Dwg 25B; App 1B Dwg 26B; App 2B Dwg 27B; App 3B Dwg 28B; App 4AC Dwg 29AC; App 5B Dwg 30B
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| CD-31775-01 | | 8B | 961.24 KB | Step by Step Systems - No. 1, 350A or 355A - 2 Way Trunk Circuit to Manual or Toll Office - Type B T.B. Supply - Composite Signaling Type B | Iss 8B Dwg 17B; App 1D Dwg 18D; App 2B Dwg 19B; App 3B Dwg 20B
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| CD-31777-01 | | 5D | 131.68 KB | Step by Step Systems - No. 355A, 356A or 35-E-97 - Subscriber Line Circuit | Iss 5D Dwg 28D; App 1B Dwg 29B
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| CD-31777-01 | | 6D | 444.50 KB | Step-by-Step Systems - No. 355A, 356A or 35-E-97 - Subscriber Line Circuit | Iss 6D Dwg 35D; App 1AC Dwg 36AC; App 2A Dwg 37A
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| CD-31793-01 | | 7D | 549.33 KB | Step by Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Line or Trunk Finder Circuit - 22 Point | Iss 7D Dwg 12D; App 1B Dwg 13B; App 2D Dwg 14D; App 3D Dwg 15D; App 4D Dwg 16D
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| CD-31795-01 | | 3B | 899.01 KB | Step-by-Step Systems - No. 1, 350A, 355A, or 360A - Outgoing Trunk Circuit from Selector Multiple - Multiple at Switchboard - Composite Supervision Type B | Iss 3B Dwg 7B; App 1D Dwg 8D; App 2D Dwg 9D; App 3D Dwg 10D; App 4D Dwg 11D; App 5D Dwg 12D; App 6B Dwg 13B; App 7B Dwg 14B; App 8D Dwg 15D
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| CD-31805-01 | | 4D | 666.46 KB | Step-by-Step Systems - No. 1, 350A or 355A - Local Connector Circuit - 8-Party Terminal Per Station - Semi-Selective Ringing | Iss 4D Dwg 13D; App 1B Dwg 14B; App 2D Dwg 15D
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| CD-31825-01 | | 2D | 450.42 KB | Step by Step Systems - No. 1, 350A, 355A or 356A - Tone Interrupter Circuit for Class of Service Tone | Iss 2D Dwg 3D; App 1D Dwg 4D; App 2D Dwg 5D; App 3D Dwg 6D; App 4D Dwg 7D
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| CD-31854-01 | | 1 | 538.65 KB | Step-by-Step System - No. 355A - Auxiliary Line Circuit for Operating Subscriber's Register | Iss 1 Dwg 1; App 1D Dwg 1D; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D; App 6D Dwg 7D; App 7D Dwg 8D
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| CD-31857-01 | | 7D | 424.80 KB | Step by Step Systems - No. 355A or 35-E-97 - Test Jack and Connector Test Line Circuit | Iss 7D Dwg 12D; App 1D Dwg 13D; App 2D Dwg 14D
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| CD-31859-01 | | 11D | 1.52 MB | Step by Step Systems - No. 355A, 356A or 35-E-97 - Test Set for Connectors and Selectors Other Than Toll Transmission Selectors and Trunks Except Those with Coin Features | Iss 11D Dwg 15D
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| CD-31861-01 | | 5D | 375.17 KB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Coin Trunk Timed Release Circuit for Use with Coin Trunks Arranged for Prepay Service | Iss 5D Dwg 7D; App 1B Dwg 8B; App 2D Dwg 9D
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| CD-31867-01 | | 4D | 366.57 KB | Step-by-Step Systems - No. 1, 350A or 355A - 2-Way Interlocal Trunk Circuit - Composite Signaling Type "B" or Simplex Signaling with Pulse Correction on Incoming Calls | Iss 4D Dwg 12D
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| CD-31868-01 | | 7B | 504.38 KB | Step-by-Step Systems - No. 355A - Toll Systems - Intertoll Dialing Office - Interrupter Relay Circuit | Iss 7B Dwg 18B; App 1D Dwg 19D; App 2B Dwg 20B; App 3B Dwg 21B
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| CD-31872-01 | | 1 | 192.93 KB | Step by Step System - 355A Dial Office - Trunk Circuit - Vacant Level or Overflow for Local Selectors | Iss 1 Dwg 1
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| CD-31912-01 | | 7D | 744.73 KB | Step by Step Systems - No. 1, 350A, 355A, 356A or 360A - Cable Protective Device Alarm - Cable Insulation Alarm and Permanent Signal Alarm Circuit Arranged to Operate on a Specified Number of Permanent Signals - PSB and PSL Battery Supply | Iss 7D Dwg 20D; App 1D Dwg 21D; App 2B Dwg 22B
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| CD-31922-01 | | 5D | 689.50 KB | Step-by-Step Systems - No. 355A or No. 356A - Line Finder Control Ckt. With or Without Mate Operation | Iss 5D Dwg 19D
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| CD-31932-01 | | 1 | 1.92 MB | SXS Systems - No. 350A or 355A - Test Line Circuit for Testing Local or Toll Train for Ringing and Continuity | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3B Dwg 4B; App 4D Dwg 5D; App 5D Dwg 6D
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| CD-31941-01 | | 2D | 228.79 KB | Step by Step Systems - No. 1 or 350A with AT - No. 1 with AMA - Miscellaneous Circuit Identifier Frame | Iss 2D Dwg 5D
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| CD-31974-01 | | 5D | 523.28 KB | Step-by-Step Systems - No. 355A or 35E97 - Miscellaneous Alarm Circuit - Key, Ringing Fuse and Fuse Alarm Circuits for Alarms and Relay Rack Bays | Iss 5D Dwg 20D; App 1D Dwg 21D
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| CD-31975-01 | | 5D | 221.22 KB | Step by Step Systems - No. 355A, 360A or 35-E-97 - Miscellaneous Alarm Circuit - Prepay Coin Trunk Alarm and Coin Battery Fuse Alarm | Iss 5D Dwg 11D
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| CD-31978-01 | | 4D | 286.46 KB | Step by Step Systems - No. 355A, 356A, 360A or 35-E-97 - Miscellaneous Alarm Circuit for Message Rate Trunks - Auxiliary Line Circuits - Line and Trunk Finders and Prepayment Coin Box Trunks | Iss 4D Dwg 11D; App 1D Dwg 12D; App 2D Dwg 13D; App 3B Dwg 14B; App 4D Dwg 15D
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| CD-31980-01 | | 11D | 1.10 MB | Step by Step Systems - No. 355A - Miscellaneous Alarm Circuit - Alarm Control and Sender Circuits | Iss 11D Dwg 17D; App 1A Dwg 18A
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| CD-32000-01 | | 2D | 1.21 MB | Step-by-Step Systems - No. 355A - 200 Point Line Finder Circuit - 3 Wire | Iss 2D Dwg 4D; App 1D Dwg 5D; App 2D Dwg 6D; App 3D Dwg 7D; App 4B Dwg 8B; App 5D Dwg 9D; App 6D Dwg 10D
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| CD-32007-01 | | 9AC | 837.68 KB | Step-by-Step Systems - No. 1, 350A or 355A - Test Distributor Circuit for Testing Subscriber Lines or for Verification Service Arranged for One-Digit Operation on Specified Levels or for 2 Digit Operation on All Levels | Iss 9AC Dwg 22AC; App 1AC Dwg 23AC; App 2D Dwg 24D; App 3B Dwg 25B; App 4B Dwg 26B; App 5B Dwg 27B; App 6D Dwg 28D; App 7B Dwg 29B
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| CD-32042-01 | | 6D | 641.38 KB | Step by Step Systems - No. 350A or 355A - Recording Completing Trunk with or without Coin with Ringback - Composite Signaling Type B or Simplex Signaling | Iss 6D Dwg 9D; App 1D Dwg 10D
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| CD-32043-01 | | 10D | 381.03 KB | Step-by-Step Systems - No. 1 or 350A - Switch Trouble Alarm Circuit - Selector Shelf Circuits - No. 355A - Miscellaneous Alarm Circuit - Selector Shelf Circuits | Iss 10D Dwg 27D; App 1D Dwg 28D; App 2D Dwg 29D
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| CD-32045-01 | | 8D | 645.69 KB | Step-by-Step Systems - No. 1 or 350A - Switch Trouble Alarm Circuit - Connector Shelf and PBX Trunk Shelf Circuits - No. 355A - Miscellaneous Alarm Circuit - Connector Shelf Circuits | Iss 8D Dwg 22D; App 1D Dwg 23D; App 2AC Dwg 24AC; App 3AC Dwg 25AC; App 4B Dwg 26B; App 5B Dwg 27B; App 6D Dwg 28D; App 7D Dwg 29D; App 8D Dwg 30D
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| CD-32045-01 | | 9D | 255.89 KB | Step-by-Step Systems - No. 1 or 350A - Switch Trouble Alarm Circuit - Connector Shelf and PBX Trunk Shelf Circuits - No. 355A - Miscellaneous Alarm Circuit - Connector Shelf Circuits | Iss 9D Dwg 31D
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| CD-32048-01 | | 3D | 311.81 KB | Step by Step Systems - No. 1 or 350A - Switch Trouble Alarm Circuit for Trunk and Miscellaneous Shelves - No. 355A - Miscellaneous Alarm Circuit for Trunk and Miscellaneous Shelves | Iss 3D Dwg 11D; App 1D Dwg 12D
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| CD-32063-01 | | 2D | 218.07 KB | Step by Step Systems - No. 350A, 355A or 356A - Trunk or Connector Alternating Relay Circuit | Iss 2D Dwg 2D; App 1D Dwg 3D
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| CD-32069-01 | | 7D | 1.96 MB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or A.E. Co. 35E97 - Line Load Control Circuit | Iss 7D Dwg 16D; App 1D Dwg 17D; App 2D Dwg 18D; App 3D Dwg 19D; App 4D Dwg 20D; App 5D Dwg 21D
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| CD-32077-01 | | 6D | 671.58 KB | Step-by-Step Systems - No. 1, 350A, 355A or 360A - 3 or 4 Wire Selector for Use as Local or Incoming Selector Repeated Dialing Toll Preciding Selector or 2 Party Message Rate Selector - Absorbs Digits Once or Repeatedly - Restricts Service Over Specified Levels - Provides Timed Release on Permanent Signal or Busy Flash on Calls from Operator | Iss 6D Dwg 7D; App 1D Dwg 8D
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| CD-32082-01 | | 4D | 753.80 KB | Step-by-Step Systems - No. 1, 350A or 355A - Trunk Circuit - No. 1, 350A, 355A or 356A - Auxiliary Line Circuit for Operating Subscibers Register with Delayed Charge Interval Using Regular Central Office Battery | Iss 4D Dwg 12D; App 1D Dwg 13D; App 2D Dwg 14D; App 3D Dwg 15D
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| CD-32084-01 | | 2D | 328.10 KB | Step by Step Systems - No. 1, 350A or 355A - Auxiliary Trunk Circuit - Digit Absorbing - For Use Between Toll Selector Multiple and Intercepting Trunk Circuit or Btween Local Selector Multiple and Operator Office Trunk Circuit for Delaying Cut Thru | Iss 2D Dwg 6D; App 1D Dwg 7D
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| CD-32087-01 | | 1 | 284.97 KB | Step by Step Systems - No. 1, 350A or 355A - Outgoing Repeater Circuit - Battery and Ground Pulsing - Long Range Reverse Battery Supervision - Type "B" TB Supply | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D
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| CD-32093-01 | | 1 | 1.07 MB | Step-by-Step Systems - No. 1, 350A, 355A, 360A, CX-30, CX-60, CX-100, CX-200, 32A32, 32A44, 35E97, 375A, 375B, 385A, 385B, 386A or 386B - Type "B" Emergency Manual Circuit for Manual Operation and Interception of Subscriber Lines and Trunk Circuits | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-32123-01 | | 3D | 126.00 KB | Step-by-Step Systems - No. 1, 350A, 355A, 356A, or 35-E-97 - Selector Bank Multiple Circuit | Iss 3D Dwg 19D; App 1D Dwg 20D
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| CD-32128-01 | | 2D | 557.87 KB | Step-by-Step Systems - No. 1, 350A, 355A, 356A, or 35E97 - Connector Bank Multiple Circuit | Iss 2D Dwg 7D; App 10D Dwg 17D; App 11D Dwg 18D; App 12D Dwg 19D; App 13D Dwg 20D; App 1D Dwg 8D; App 2D Dwg 9D; App 3D Dwg 10D; App 4D Dwg 11D; App 5D Dwg 12D; App 6D Dwg 13D; App 7D Dwg 14D; App 8D Dwg 15D; App 9D Dwg 16D
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| CD-32129-01 | | 1 | 297.31 KB | Step-by-Step Systems - No. 1, 350A, 355A, or 35E97 - Miscellaneous Bank Multiple Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D
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| CD-32133-01 | | 6D | 468.01 KB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Subscriber Line Circuit | Iss 6D Dwg 18D; App 1D Dwg 19D; App 2B Dwg 20B; App 3A Dwg 21A; App 4B Dwg 22B; App 5D Dwg 23D; App 6B Dwg 24B; App 7B Dwg 25B
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| CD-32146-01 | | 2D | 558.31 KB | Step by Step Systems - No. 355A Dial Office - Coin Trunk or No. 355A & No. 356A - Auxiliary Coin Line Circuit for Dial Post Payment Service | Iss 2D Dwg 3D; App 1D Dwg 4D; App 2D Dwg 5D; App 3D Dwg 6D; App 4D Dwg 7D; App 5D Dwg 8D
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| CD-32153-01 | | 3D | 158.11 KB | Step-by-Step Systems - No. 1, 350A, 355A or 356A - Miscellaneous Circuit for Angle Relay Rack Bays | Iss 3D Dwg 4D
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| CD-32153-01 | | 4D | 400.63 KB | Step-by-Step Systems - No. 1, 350A, 355A or 356A - Miscellaneous Circuit for Angle Relay Rack Bays and Universal Switch Frames | Iss 4D Dwg 6D; App 1D Dwg 7D; App 2D Dwg 8D; App 3D Dwg 9D; App 4D Dwg 10D; App 5D Dwg 11D; App 6B Dwg 12B
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| CD-32170-01 | | 4B | 191.72 KB | Step-by-Step Systems - No. 1, 350A, 355A or 360A - Outgoing Information Trunk Circuit from Local or Toll Preceding Selector Multiple with or without High Low Supervision | Iss 4B Dwg 4B
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| CD-32178-01 | | 2D | 556.63 KB | Step by Step Systems - No. 1 or 350A - 2-Wire Trunk Circuits from Selector and Connector Multiple to Repair Service Desk No. 2 | Iss 2D Dwg 2D; App 1D Dwg 3D
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| CD-32187-01 | | 3D | 362.32 KB | Step by Step Systems - No. 1, 350A, 355A, 356A or 360A - Auxiliary Trunk Circuit Arranged to Restrict Service | Iss 3D Dwg 4D; App 1B Dwg 5B
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| CD-32192-01 | | 4D | 1.30 MB | Step by Step Systems - No. 355A - Miscellaneous Alarm Circuit - Alarm Control and Aisle Pilots - Permanent Signal Timing Circuit | Iss 4D Dwg 9D; App 1D Dwg 10D; App 2D Dwg 11D; App 3D Dwg 12D
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| CD-32192-01 | | 7D | 1.27 MB | Step-by-Step Systems - No. 355A - Miscellaneous Alarm Circuit - Alarm Control and Aisle Pilots - Permanent Signal Timing Circuit | Iss 7D Dwg 24D; App 1D Dwg 25D
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| CD-32192-01 | | 8B | 1.29 MB | Step-by-Step Systems - No. 355A - Miscellaneous Alarm Circuit - Permanent Signal Timing Circuit | Iss 8B Dwg 26B
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| CD-32193-01 | | 1 | 383.03 KB | Step by Step Systems - No. 1, 350A or 355A - Miscellaneous Alarm Circuit - Alarm Sender | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3B Dwg 4B; App 4B Dwg 5B
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| CD-32194-01 | | 3B | 523.69 KB | Step by Step Systems - No. 1, 350A, 355A, 35-E-97 or No. 1 with AMA - Group and Alarm Relay Ckt for Line and Trunk Finders | Iss 3B Dwg 11B
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| CD-32202-01 | | 7D | 1.77 MB | Step-by-Step Systems - No. 1, 350A, 355A, 356A, 360A, 35-E-97 and North Electric Co. CX Offices - Intercepting Trunk Circuit for Intercepting Calls From Connector Terminals and From Selector Levels for Use with an Announcement Machine - Announcement System No. 7A | Iss 7D Dwg 16D; App 1D Dwg 17D; App 2D Dwg 18D; App 3D Dwg 19D
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| CD-32216-01 | | 3D | 420.10 KB | Step-by-Step Systems - No. 355A or 35E97 - Subscriber Line Circuit Arranged for Lockout | Iss 3D Dwg 6D; App 1D Dwg 7D; App 2D Dwg 8D
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| CD-32239-01 | | 3D | 363.41 KB | Step-by-Step Systems - No. 1, 350A, 355A or 35E97 - Switch Trouble Alarm Circuit for Line Finders, Trunk Finders or Permanent Signal Finders | Iss 3D Dwg 9D; App 1D Dwg 10D; App 2B Dwg 11B; App 3B Dwg 12B; App 4BU Dwg 13BU
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| CD-32241-01 | | 5B | 372.32 KB | Step by Step Systems - No. 1, 350A, 355A, or 35E97 - Outgoing Trunk Circuit - E and M Lead Signaling to CAMA Office | Iss 5B Dwg 12B
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| CD-32248-01 | | 6D | 451.33 KB | Step-by-Step Systems - No. 1, 350A, 355A or 35-E-97 - Miscellaneous Circuir for ANI - Type B and Type C Trunk Frames | Iss 6D Dwg 12D; App 1D Dwg 13D; App 2B Dwg 14B
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| CD-32289-01 | | 3D | 1.06 MB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or 35E97 - Coin Control Trunk Circuit Using 2 Frequencies Over Tip and Ring for Calls froM Switchboard Using Local or Toll Train | Iss 3D Dwg 4D; App 1D Dwg 5D
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| CD-32309-01 | | 2AC | 2.72 MB | Step-by-Step Systems - No. 1, 350A, 355A, or 35-E-97 - Outgoing Intercepting Trunk Circuit - E and M Lead Supervision | Iss 2AC Dwg 3AC; App 1AR Dwg 4AR; App 2B Dwg 5B; App 3A Dwg 6A; App 4B Dwg 7B; App 5A Dwg 8A
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| CD-32310-01 | | 1 | 1.46 MB | Step-by-Step Systems - No. 1, 350A, 355A or 35-E-97 - Pulse Generator and Counting Circuit for Use with Intercepting Trunk Circuits Using E and M Lead Supervision | Iss 1 Dwg 1; App 1A Dwg 2A; App 2D Dwg 3D; App 3D Dwg 4D
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| CD-32311-01 | | 3B | 318.37 KB | Step by Step Systems - No. 1, 350A, 355A or 35E97 - Outgoing Trunk Circuit from Selector Multiple for Information, Repair, Official PBX or Intercepting Service - E and M Lead Supervision | Iss 3B Dwg 8B
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| CD-32342-01 | | 4D | 5.55 MB | Step-by-Step Systems - No. 1, 350A, 355A or 35E97 - Outgoing Trunk Circuit - Loop or E&M Lead Signaling - Special Toll or Operator Assistance - ANI Type B or C for No. 1, 350A, 355A or ANI Type C for 35E97 or Operator Identified to CAMA Office | Iss 4D Dwg 7D; App 1B Dwg 8B; App 2B Dwg 9B; App 3D Dwg 10D; App 4B Dwg 11B; App 5D Dwg 12D
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| CD-32344-01 | | 7D | 7.94 MB | Step-by-Step Systems - No. 1, 350A, 355A or 35-E-97 - Outgoing Coin Trunk Circuit - Loop or E&M Lead Signaling - Arranged to Handle Special Toll or Operator Assistance and Station to Station Sent Paid Calls - ANI-B or C for No. 1, 350A or 355A or ANI-C for 35E97 or Operator Identified to CAMA | Iss 7D Dwg 15D; App 1B Dwg 16B
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| CD-32531-01 | | 3AC | 315.26 KB | Step-by-Step Systems - No. 1, 350A, 355A - Auxiliary Trunk Circuit Arranged for Intercept Service Between Connector Numbers in SXS ANI-B Type Offices and an Automatic Intercept System | Iss 3AC Dwg 4AC; App 1A Dwg 5A; App 2AR Dwg 6AR; App 3B Dwg 7B; App 4B Dwg 8B
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| CD-32539-01 | | 1 | 6.48 MB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Coin Trunk Circuit for Use Preceding a First Selector Serving Coin Lines Arranged for Prepay or Coinless Access to Specified Numbers | Iss 1 Dwg 1; App 1A Dwg 2A; App 2A Dwg 3A; App 3B Dwg 4B
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| CD-33003-01 | | 2D | 2.01 MB | Step-by-Step Systems - No. 1, 350A, 355A or 360A - Local, Incoming or 2 Party Message Rate - 3 or 4 Wire Selector Arranged to Restrict Service Over Any Specified Levels, for Peg Count on Cut Thru, and for Timed Release on Permanent Signal or Busy Flash on Calls from Operator | Iss 2D Dwg 3D; App 1D Dwg 4D; App 2D Dwg 5D; App 3D Dwg 6D; App 4D Dwg 7D; App 5D Dwg 8D
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| CD-33013-01 | | 4D | 2.61 MB | Step-by-Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - 200 Point Line or Trunk Finder - 3 Wire | Iss 4D Dwg 5D; App 1D Dwg 6D; App 2D Dwg 7D; App 3D Dwg 8D; App 4D Dwg 9D; App 5D Dwg 10D
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| CD-33015-01 | | 3D | 2.01 MB | Step-by-Step Systems - No. 1, 350A, 355A, or 35-E-97 - Line Finder Circuit - 200 Point - 4 Wire | Iss 3D Dwg 4D; App 1D Dwg 5D; App 2D Dwg 6D; App 3D Dwg 7D; App 4D Dwg 8D; App 5AC Dwg 9AC
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| CD-33022-01 | | 4D | 2.28 MB | Step by Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Coin Connector Circuit - One Ring | Iss 4D Dwg 12D; App 1D Dwg 13D
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| CD-33027-01 | | 1 | 1.75 MB | Step by Step Systems - No. 1, 350A, 355A or 360A - Code Selector Circuit Arranged to Absorb Digits Repeatedly and to Restrict Service Until a Digit is Absorbed | Iss 1 Dwg 1
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| CD-35033-01 | | 1 | 619.57 KB | Step-by-Step Systems - No. 1, 350A, 355A or 35E97 with "TOUCH-TONE" Type D - Converter Trunk and Link | Iss 1 Dwg 1; App 1B Dwg 2B; App 2A Dwg 3A; App 3AR Dwg 4AR
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| CD-3C252-01 | | 3A | 3.32 MB | Common Systems - T1C Office Repeater Bay - Application Schematic | Iss 3A Dwg 3A; App 1B Dwg 4B; App 2A Dwg 5A; App 3B Dwg 6B; App 4B Dwg 7B; App 5D Dwg 8D
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| CD-3C254-01 | | 3B | 870.44 KB | Common Systems - T1C Digital Line - Order Wire Circuit | Iss 3B Dwg 4B
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| CD-3C285-01 | | 1 | 2.42 MB | Common Systems - T1 Digital Line - 221-Type Office Repeater | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-3C290-01 | | 1 | 1022.81 KB | Common Systems - 4B Channel PCM Bank Type D4 - Maintenance Bank - Application Schematic | Iss 1 Dwg 1; App 1A Dwg 2A; App 2AC Dwg 3AC; App 3B Dwg 4B
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| CD-3C292-01 | | 2A | 486.94 KB | Common Systems - 660 Communication Panel Circuits | Iss 2A Dwg 2A; App 1B Dwg 3B
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| CD-3C292-01 | | 4D | 683.69 KB | Common Systems - 660 Communication Panel Circuit | Iss 4D Dwg 7D; App 1D Dwg 8D; App 2A Dwg 9A; App 3B Dwg 10B; App 4D Dwg 11D; App 5B Dwg 12B; App 6B Dwg 13B
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| CD-3C304-02 | | 1 | 1.94 MB | Common Systems - 48 Channel PCM Bank Type D4 - Application Schematic | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-3C311-01 | | 2B | 490.40 KB | Common Systems - 48 Channel PCM Bank Type D4 - Trunk Processing Unit (TPU) | Iss 2B Dwg 2B
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| CD-3C348-01 | | 1 | 1009.40 KB | Toll Systems - T1C/T1 Quasi Random Signal Source (QRSS) | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-3D031-01 | | 3A | 2.48 MB | Data Systems - Station - Data Auxiliary Sets 820D and 820E Types | Iss 3A Dwg 6A; App 1D Dwg 7D; App 2B Dwg 8B
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| CD-3F027-01 | | 2B | 298.59 KB | Signaling and Packet Switching Systems - Common Network Interface - Digital Facility Access Cabinet Circuit | Iss 2B Dwg 3B; App 1A Dwg 4A; App 2B Dwg 5B; App 3A Dwg 6A; App 4B Dwg 7B
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| CD-3H110-01 | | 2A | 1.64 MB | Electronic Switching Systems - No. 3 - Peripheral Control Circuit | Iss 2A Dwg 2A
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| CD-3H120-01 | | 2A | 1.13 MB | Electronic Switching Systems - No. 3 - 15A Remreed Grid Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2A Dwg 4A; App 3D1 Dwg 5D1
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| CD-3H121-01 | | 2A | 749.24 KB | Electronic Switching Systems - No. 3 - 15B Remreed Grid Circuit | Iss 2A Dwg 2A; App 1D Dwg 3D
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| CD-3H122-01 | | 2A | 355.84 KB | Electronic Switching Systems - No. 3 - First and Second Stage Access Circuit | Iss 2A Dwg 2A
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| CD-3H130-01 | | 1 | 473.68 KB | Electronic Switching Systems - No. 3 - 15C Remreed Grid Circuit | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-3H131-01 | | 2A | 408.47 KB | Electronic Switching Systems - No. 3 - Third Stage Access Circuit | Iss 2A Dwg 2A
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| CD-3H140-01 | | 2A | 550.49 KB | Electronic Switching Systems - No. 3 - Master Scanner Matrix Circuit | Iss 2A Dwg 2A
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| CD-3H150-01 | | 1 | 347.23 KB | Electronic Switching Systems - No. 3 - Distribute Point Circuit | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-3H200-01 | | 2A | 1.75 MB | Electronic Switching Systems - No. 3 - Junctor and Junctor Control Circuit | Iss 2A Dwg 2A
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| CD-3H205-01 | | 1 | 452.99 KB | Electronic Switching Systems - No. 3 - Dial-Tone-First Coin Line Circuit | Iss 1 Dwg 1
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| CD-3H208-01 | | 1 | 511.39 KB | Electronic Switching Systems - No. 3 - Noise Immunity Line Circuit | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-3H220-01 | | 2A | 1.43 MB | Electronic Switching Systems - No. 3 - Universal Trunk Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2D Dwg 4D
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| CD-3H401-01 | | 2A | 1.02 MB | Electronic Switching Systems - No. 3 - "TOUCH-TONE" Calling Detector Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A
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| CD-3H402-01 | | 2A | 1.15 MB | Electronic Switching Systems - No. 3 - Multifrequency Receiver Circuit | Iss 2A Dwg 2A
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| CD-3H403-01 | | 1 | 522.65 KB | Electronic Switching Systems - No. 3 - Dial Pulse Transmitter Circuit | Iss 1 Dwg 1
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| CD-3H404-01 | | 1 | 1.19 MB | Electronic Switching Systems - No. 3 - Multifrequency Transmitter Circuit | Iss 1 Dwg 1
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| CD-3H406-01 | | 1 | 1.27 MB | Electronic Switching Systems - No. 3 - Superimposed Ringing Circuit | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-3H410-01 | | 2A | 1.74 MB | Electronic Switching Systems - No. 3 - Customer Dial Pulse Receiver and Regular Ringing Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A
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| CD-3H411-01 | | 3A | 1.07 MB | Electronic Switching Systems - No. 3 - Coin, Tone, Announcement and Conference Circuit | Iss 3A Dwg 3A; App 1B Dwg 4B
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| CD-3H520-01 | | 2A | 6.76 MB | Electronic Switching Systems - No. 3 - Peripheral Test Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2B Dwg 4B
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| CD-3H901-01 | | 2A | 585.22 KB | Electronic Switching Systems - No. 3 - Network Frame Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2A Dwg 4A
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| CD-3H902-01 | | 2A | 1.51 MB | Electronic Switching Systems - No. 3 - Control Frame Circuit | Iss 2A Dwg 2A; App 1AC Dwg 3AC; App 2A Dwg 4A; App 3A Dwg 5A; App 4B Dwg 6B
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| CD-3H904-01 | | 2A | 867.71 KB | Electronic Switching Systems - No. 3 - Test Frame Circuit | Iss 2A Dwg 2A
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| CD-3H905-01 | | 2A | 873.28 KB | Electronic Switching Systems - No. 3 - Miscellaneous Power Circuit | Iss 2A Dwg 2A; App 1A Dwg 3A; App 2D Dwg 4D
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| CD-3H907-01 | | 1 | 409.47 KB | Electronic Switching Systems - No. 3 - DC Power Distribution Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2D Dwg 3D
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| CD-3H908-01 | | 1 | 268.94 KB | Electronic Switching Systems - No. 3 - AC Power Distribution Circuit | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-3H911-01 | | 2B | 202.32 KB | Electronic Switching Systems - No. 3 - Distribute Point Applique Circuit | Iss 2B Dwg 2B; App 1BU Dwg 3BU
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| CD-3H912-01 | | 3D | 226.74 KB | Electronic Switching Systems - No. 3 - Scanner, Peripheral Pulse Distributor and Peripheral Decoder - Assignment Rules and Compatibility Guide | Iss 3D Dwg 3D
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| CD-3H914-01 | | 1 | 214.37 KB | Electronic Switching Systems - No. 3 - Data Interface Circuit | Iss 1 Dwg 1
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| CD-3T003-01 | | 1 | 152.56 KB | Common Systems - 3B20D Model 3 Processor - SCSI Growth or Conversion Unit Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2A Dwg 3A
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| CD-3T004-01 | | 1 | 254.34 KB | Common Systems - 3B20D Model 2 & 3 Processor - Small Computer Systems Interface (SCSI) - New Ship Unit Circuit | Iss 1 Dwg 1
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| CD-3T011-01 | | 3B | 681.25 KB | Common Systems - 3B21D Computer - Processor Circuit Unit | Iss 3B Dwg 3B
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| CD-3T012-01 | | 2B | 338.72 KB | Common Systems - 3B21D Computer - Growth Unit Circuit | Iss 2B Dwg 2B
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| CD-3T015-01 | | 1 | 340.72 KB | Common Systems - 3B21D Computer - Computer Systems Circuit | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-4C003-01 | | 3AC | 339.79 KB | Common Systems - Lighting Circuit - Fluorescent Type and Appliance Outlets for Electronic Switching Systems Areas | Iss 3AC Dwg 3AC
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| CD-4C005-02 | | 1 | 313.05 KB | Common Systems - Programmable Read Only Memory Circuit | Iss 1 Dwg 1
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| CD-4C035-01 | | 1 | 317.61 KB | Common Systems - Toll Power Distributing Unit Circuit for Use with No. 2 ESS, 2A ESS, 3 ESS | Iss 1 Dwg 1
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| CD-4C053-01 | | 2 | 343.50 KB | Common Systems - AT&T 3B20D Models 1, 2 and 3 Computer - AC & DC Power Distribution Circuit | Iss 2 Dwg 5A
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| CD-4C065-01 | | 1 | 133.32 KB | Common Systems - 3B20D Models 1, 2 and 3 Processor - Port Switch Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2D Dwg 3D; App 3M Dwg 4M
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| CD-4C097-01 | | 2B | 217.24 KB | Common Systems - 3B20D Model 2 and 3 Processor - Main Store and IOP Growth Unit Circuit | Iss 2B Dwg 9B
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| CD-4C098-01 | | 2B | 221.57 KB | Common Systems - 3B20D Model 2 and 3 Processor - Central Processing Unit Circuit | Iss 2B Dwg 10B; App 1B Dwg 11B; App 2B Dwg 12B; App 3B Dwg 13B; App 6B Dwg 16B
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| CD-4C099-01 | | 2B | 340.04 KB | Common Systems - 3B20D Model 2 & 3 Processor - Main Store, IO and DFC Unit Circuit | Iss 2B Dwg 10B; App 1B Dwg 11B; App 3B Dwg 13B; App 4M Dwg 14M
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| CD-4C101-01 | | 2 | 145.94 KB | Common Systems - 3B20D Model 2 & 3 Processor - I/O Processor Basic Unit Circuit | Iss 2 Dwg 11M
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| CD-4C102-01 | | 1 | 53.06 KB | Common Systems - 3B20D Model 2 & 3 Processor - Power Distribution Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-4C115-01 | | 1 | 156.44 KB | Common Systems - 3B20S Model 2 Processor - IO Processor and DFC Controller Unit Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2B Dwg 3B; App 3B Dwg 4B; App 4B Dwg 5B; App 5B Dwg 6B; App 6AC Dwg 7AC
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| CD-4C119-01 | | 1 | 228.64 KB | Common Systems - 3B20D Model 2 & 3 Processor - Processor Control Cabinet Circuit for 5ESS | Iss 1 Dwg 1; App 1B Dwg 2B; App 2AC Dwg 3AC; App 3B Dwg 4B; App 4A Dwg 5A; App 5B Dwg 6B; App 6AC Dwg 7AC; App 7M Dwg 8M; App 8B Dwg 9B
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| CD-4C120-01 | | 1 | 124.70 KB | Common Systems - 3B20D Model 2 Processor - Tape Unit Cabinet Circuit | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-4C122-01 | | 1 | 221.28 KB | Common Systems - 3B20D Model 2 & 3 Processor - Processor System Cabinet for 5ESS | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3B Dwg 4B; App 4A Dwg 5.pdf; App 5A Dwg 6A; App 6AC Dwg 7AC; App 7B Dwg 8B
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| CD-4C122-01 | | 2B | 149.05 KB | Common Systems - 3B20D Model 2 and 3 Processor - Processor System Cabinet for 5ESS | Iss 2B Dwg 9B; App 1B Dwg 10B
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| CD-4C126-01 | | 1 | 133.20 KB | Common Systems - 3B20D Model 3 Processor - Tape / Disk Cabinet | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B
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| CD-4C127-01 | | 2B | 247.97 KB | Common System - 3B20D Model 3 Computer - Computer System Circuit | Iss 2B Dwg 10B; App 1B Dwg 11B; App 2B Dwg 12B; App 3B Dwg 13B; App 4B Dwg 14B; App 5B Dwg 15B
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| BT-51005-01 | 1929-03-19 | 3 | 10.71 MB | Subscriber's Sender Circuit - 2 Digit Office Code - Panel Machine Switching System | Iss 3 Dwg 24
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| BT-51009-01 | 1931-06-24 | 4 | 124.60 KB | Panel System - Sender Circuit - Subscriber's 2 Digit Non-Coin | App 1 Dwg 29
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| CD-51546-01 | | 11B | 4.73 MB | Toll Systems - TD Radio - Application Schematic for TD-3D Transmitter-Receiver Bay | Iss 11B Dwg 36B; App 1B Dwg 37B; App 2B Dwg 38B
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| BT-52005-02 | 1933-03-23 | 1 | 5.78 MB | Line Circuit - District Selector Circuit - Line Finder Circuit - Arranged for Individual Message Register or Flat Rate Service - 400 Point Lockout Type Line Finder - Panel System | Iss 1 Dwg 1; App 1 Dwg 7; App 2 Dwg I18; App 3 Dwg 24; App 4 Dwg 35; App 5 Dwg 41
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| BT-52005-03 | 1933-03-30 | 3 | 6.31 MB | Line Circuit - District Selector Circuit - Line Finder Circuit - Arranged for Two Party Message Rate Lines - 400 Point Lockout Type Line Finder - Panel System | Iss 3 Dwg 22; App 1 Dwg 28; App 2 Dwg 31
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| BT-53007-01 | 1926-11-16 | 2 | 1.30 MB | Selector Circuit - Incomign From Special "A" Switchboard - Three Wire Dialing - Panel Machine Switching System | Iss 2 Dwg 3
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| BT-54001-01 | 1930-02-17 | 3 | 4.48 MB | For Miscellaneous Alarm Circuit - Appearing On Floor Alarm Board - Panel System | Iss 3 Dwg 38; App 1 Dwg 40; App 2 Dwg 43
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| BT-54002-01 | 1930-02-11 | 3 | 1.90 MB | Power Alarm Circuits - Panel System | Iss 3 Dwg 17; App 1 Dwg 22
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| CD-55039-01 | | 8D | 231.27 KB | Toll Systems - Toll Switchboard No. 1B, 3B, 3C, 3CF, 3CL, or 5 - Toll Testboard No. 17B, 17C, or 18B - Toll Test Unit No. 1A or 3A - Automatic Outgoing Intertoll Trunk Test Frame - Tandem Patching Bay - Circuit Patching Bay - Auxiliary Signal and Night Alarm Circuit | Iss 8D Dwg 13D
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| CD-55392-01 | | 5B | 2.13 MB | Toll Systems - Signaling - 1000 Cycle Signal Receiving Circuit | Iss 5B Dwg 7B; App 1D Dwg 8D; App 2B Dwg 9B; App 3D Dwg 10D; App 4B Dwg 11B; App 5D Dwg 12D; App 6D Dwg 13D; App 7D Dwg 14D; App 8D Dwg 15D; App 9D Dwg 16D
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| CD-55574-01 | | 6D | 3.15 MB | Toll Systems - Signaling - Telephone Order Wire Circuit - 1000 Cycle or 1900 Cycle Ringdown Signaling | Iss 6D Dwg 8D; App 1D Dwg 9D
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| CD-56073-01 | | 3D | 763.42 KB | Toll Systems - "L" or "N" Carrier Telephone - Telephone Circuit for Use in Offices with 24, 48, 130 or 152 Volt Battery Supply | Iss 3D Dwg 5D
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| CD-56112-01 | | 8D | 1.25 MB | Toll Systems - Signaling - Television Order Wire Circuit | Iss 8D Dwg 10D; App 1D Dwg 11D; App 2AC Dwg 12AC
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| CD-56137-01 | | 6D | 924.56 KB | Toll Systems - Signaling - Miscellaneous Jack Circuit - 1600 or 2000 Cycle Signaling for Signaling Test Circuit | Iss 6D Dwg 9D; App 1D Dwg 10D; App 2D Dwg 11D
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| CD-56163-01 | | 2D | 1.34 MB | Toll Systems - Signaling - Signaling Converter Circuit for N or O Carrier or Single Frequency Signaling Circuit to 20 Cycle Ringdown Circuit | Iss 2D Dwg 3D; App 1D Dwg 4D; App 2B Dwg 5B; App 3D Dwg 6D
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| CD-56454-01 | | 2A | 1.01 MB | Toll Systems - "O" & "ON" Carrier - Remote Alarm Release Circuit | Iss 2A Dwg 2A
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| CD-5D001-01 | | 5M | 35.90 KB | 5ESS Switching System - Floor Plan Data | Iss 5M Dwg 5M
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| CD-5D001-02 | | 3M | 71.87 KB | 5ESS Switching System - Floorplan Data for the 5ESS-2000 Switch Cabinet | Iss 3M Dwg 3M; App 1M Dwg 4M
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| CD-5D002-01 | | 3D | 224.79 KB | 5ESS Switching Equipment - Current Drain Data | Iss 3D Dwg 3D; App 1D Dwg 4D; App 2M Dwg 5M; App 3M Dwg 6M; App 4M Dwg 7M; App 5M Dwg 8M
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| CD-5D003-01 | | 1 | 43.31 KB | 5ESS Switching Equipment - Limiting Conductor Specification | Iss 1 Dwg 1
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| CD-5D004-01 | | 4A | 286.14 KB | Electronic Switching Systems - 5ESS - AC Power Distribution Circuit | Iss 4A Dwg 8B
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| CD-5D005-01 | | 6B | 285.05 KB | 5ESS Switching Equipment - DC Power Distribution Circuit | Iss 6B Dwg 16B
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| CD-5D007-01 | | 28M | 128.68 KB | 5ESS Switching Equipment Assignment Rules | Iss 28M Dwg 30M
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| CD-5D008-01 | | 3A | 536.23 KB | 5ESS Electronic Switching Equipment - Office Alarm Unit Circuit | Iss 3A Dwg 3A; App 1D Dwg 4D; App 2B Dwg 5B; App 3A Dwg 6A; App 4B Dwg 7B; App 5A Dwg 8A; App 6B Dwg 9B
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| CD-5D011-01 | | 2D | 151.55 KB | 5ESS Switching Equipment - Data Set Application Schematic Circuit | Iss 2D Dwg 3D
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| CD-5D012-01 | | 2D | 148.06 KB | 5ESS Switching Equipment - Interface Module Application Schematic | Iss 2D Dwg 2D; App 1A Dwg 3A; App 2D Dwg I4D
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| CD-5D012-02 | | 3B | 339.73 KB | 5ESS Switching Equipment - Switching Module Application Schematic | Iss 3B Dwg 6B; App 1B Dwg 7B; App 2B Dwg 8B; App 3B Dwg 9B; App 4B Dwg 10B; App 5B Dwg 11B
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| CD-5D014-01 | | 4A | 74.24 KB | 5ESS Switching Equipment - Application Schematic for 5ESS System (7 Ft. Frames and Cabinets) | Iss 4A Dwg I5A; App 1D Dwg 6D
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| CD-5D014-02 | | 20M | 55.44 KB | 5ESS Switching Equipment - Application Schematic for 5ESS System (6 Ft. Cabinets) | Iss 20M Dwg 30M
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| CD-5D015-01 | | 1 | 398.66 KB | 5ESS Switching Equipment - Modular Metallic Service Unit Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2A Dwg 3A; App 3D Dwg 4D; App 4A Dwg ID5A; App 5M Dwg 6M; App 6B Dwg 7B; App 7B Dwg 8B; App 8M Dwg 9M
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| CD-5D016-01 | | 1 | 279.15 KB | 5ESS Switching Equipment - Modular Metallic Service Unit Interconnection | Iss 1 Dwg 1
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| CD-5D017-01 | | 2M | 105.11 KB | 5ESS Switching Equipment - Audible and Visual Alarm Circuit | Iss 2M Dwg 10ME; App 1M Dwg 11M; App 2B Dwg 12B
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| CD-5D019-02 | | 1 | 107.40 KB | 5ESS Switching Equipment - 3 Fan Unit and Alarm Circuit for 6 Foot Cabinet | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B
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| CD-5D026-01 | | 5A | 217.66 KB | 5ESS Switching Equipment - Message Switch Control Unit Circuit | Iss 5A Dwg 5A
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| CD-5D035-01 | | 1 | 2.04 MB | 5ESS Switching Equipment - Digital Service Unit Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2AC Dwg 3AC; App 3A Dwg 4A; App 4B Dwg 5B; App 5B Dwg 6B
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| CD-5D037-01 | | 2D | 194.61 KB | 5ESS Switching Equipment - Time Multiplexed Switch Control Unit Circuit | Iss 2D Dwg 5D; App 1B Dwg 6B
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| CD-5D043-01 | | 2D | 142.12 KB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Circuit | Iss 2D Dwg 5D; App 1B Dwg 6B
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| CD-5D044-01 | | 3AC | 177.38 KB | 5ESS Switching Equipment - Resistor Panel Circuit | Iss 3AC Dwg 3AC; App 1D Dwg 4D; App 2B Dwg 5B; App 3M Dwg 6M; App 4M Dwg 7M; App 5B Dwg 8B; App 6M Dwg 9M
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| CD-5D045-01 | | 2 | 1.13 MB | 5ESS Switching Equipment - Time Slot Interchanger Unit, Model 2 Circuit | Iss 2 Dwg 12D
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| CD-5D048-01 | | 2A | 293.78 KB | 5ESS Switching Equipment - Memory Expansion Unit Circuit | Iss 2A Dwg 2A; App 1AC Dwg 3AC; App 3B Dwg 5B; App 4A Dwg 6A; App 5B Dwg 7B; App 6B Dwg 8B
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| CD-5D052-02 | | 1 | 581.86 KB | 5ESS Switching Equipment - Line Unit, Model 2 Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2AC Dwg 3AC; App 3B Dwg 4B; App 4B Dwg 5B; App 5M Dwg 6M; App 6A Dwg 7A
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| CD-5D053-01 | | 2D | 320.10 KB | 5ESS Switching Equipment - Fuse / Filter Panel Circuit | Iss 2D Dwg 5D; App 1B Dwg 6B; App 2M Dwg 9M
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| CD-5D060-01 | | 2 | 448.63 KB | 5ESS Switching Equipment - Communication Module Control Unit Circuit | Iss 2 Dwg 9M; App 1B Dwg 10B; App 2B Dwg 11B; App 3B Dwg 12B; App 4M Dwg 13M; App 5M Dwg 14M
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| CD-5D061-01 | | 3B | 1.03 MB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Model 2 Circuit | Iss 3B Dwg 7B
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| CD-5D064-01 | | 2B | 381.58 KB | Electronic Switching Systems - 5ESS - Operator Services Position System - Link Adapter Unit | Iss 2B Dwg 3B
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| CD-5D066-01 | | 1 | 450.88 KB | 5ESS Switching Equipment - Message Switch Peripheral Unit, Model 2 | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-5D070-01 | | 1 | 189.01 KB | 5ESS Switching Equipment - +48V DC Power Distribution Circuit | Iss 1 Dwg 1
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| CD-5D071-01 | | 1 | 341.05 KB | 5ESS Switching Equipment - Operating Support Systems - Interface Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2A Dwg 3A; App 3B Dwg 4B; App 4M Dwg 5M; App 5B Dwg 6B; App 6M Dwg 7M; App 7B Dwg 8B; App 8M Dwg 9M
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| CD-5D071-01 | | 2 | 227.23 KB | 5ESS Switching Equipment - Operating Support Systems - Interface Circuit | Iss 2 Dwg 10B; App 1B Dwg 11B; App 2M Dwg 12M; App 3M Dwg 13M
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| CD-5D074-01 | | 4B | 514.28 KB | 5ESS Switching Equipment - Packet Switch Unit Circuit | Iss 4B Dwg 12B
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| CD-5D075-01 | | 2M | 246.96 KB | 5ESS Switching Equipment - Remote Clock Unit Circuit | Iss 2M Dwg 10M; App 1B Dwg 11B; App 2B Dwg 12B
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| CD-5D077-01 | | 1 | 566.69 KB | 5ESS Switching Equipment - Message Switch Control Unit Model 2 Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2M Dwg 3M; App 3B Dwg 4B
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| CD-5D078-01 | | 1 | 461.74 KB | 5ESS Switching Equipment - Message Switch Peripheral Unit, Model 3 Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2M Dwg 3M; App 3B Dwg 4B; App 4B Dwg 5B
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| CD-5D081-01 | | 1 | 217.49 KB | 5ESS Switching Equipment - 6 Fan Unit Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2M Dwg 3M; App 3B Dwg 4B
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| CD-5D081-02 | | 1 | 151.31 KB | 5ESS Switching Equipment - 6 Fan Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-5D082-01 | | 2 | 1.15 MB | 5ESS Switching Equipment - Message Interface / Clock Unit Model 2 Circuit | Iss 2 Dwg 3D; App 1D Dwg 4D; App 2AC Dwg 5AC; App 3M Dwg 6M; App 4B Dwg 7B
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| CD-5D084-01 | | 1 | 345.29 KB | 5ESS Switching Equipment - Fuse / Filter Panel 3 Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3M Dwg 4M
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| CD-5D085-01 | | 3A | 339.99 KB | 5ESS Switching Equipment - ECL Bus Unit (EBUS) Circuit | Iss 3A Dwg 11M; App 1B Dwg 12B; App 2B Dwg 13B
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| CD-5D086-01 | | 1 | 370.32 KB | 5ESS Switching Equipment - Transmission Rate Converter Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2M Dwg 3M; App 3M Dwg 4M
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| CD-5D086-02 | | 2 | 577.24 KB | 5ESS Switching Equipment - Transmission Rate Converter Unit Model 2 Circuit | Iss 2 Dwg 3B; App 1M Dwg 4M; App 2B Dwg 5B
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| CD-5D087-01 | | 1 | 326.67 KB | 5ESS Switching Equipment - Fuse / Filter Panel 4 Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2M Dwg 3M
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| CD-5D089-01 | | 1 | 312.99 KB | 5ESS Switching Equipment - Integrated Services Line Unit - Common Shelf Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2B Dwg 3B; App 3A Dwg 4A; App 4B Dwg 5B
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| CD-5D090-01 | | 1 | 300.69 KB | 5ESS Switching Equipment - Integrated Services Line Unit - Drawer Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2B Dwg 3B; App 3B Dwg 4B
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| CD-5D091-01 | | 1 | 453.55 KB | 5ESS Switching Equipment - Integrated Services Line Unit Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2B Dwg 3B; App 3A Dwg 4A; App 4B Dwg 5B
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| CD-5D092-01 | | 2B | 621.29 KB | 5ESS Switching Equipment - Digital Service Unit Model 2 Circuit | Iss 2B Dwg 9B; App 1B Dwg 10B; App 2B Dwg 11B; App 3B Dwg 12B; App 4B Dwg 13B
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| CD-5D094-01 | | 3B | 1.86 MB | 5ESS Switching Equipment - Module Controller and Time Slot Interchange Unit | Iss 3B Dwg 21B; App 1B Dwg 22B; App 2B Dwg 23B; App 3B Dwg 24B
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| CD-5D099-01 | | 2A | 187.78 KB | 5ESS Switching Equipment - Test Access Unit Circuit | Iss 2A Dwg 2A; App 1M Dwg 3M; App 2M Dwg 4M; App 3M Dwg 5M
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| CD-5D101-01 | | 1 | 66.40 KB | Electronic Switching Systems - No. 5 - Master Control Center and Supplementary Trunk Line Work Station Circuit | Iss 1 Dwg 1
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| CD-5D114-01 | | 1 | 115.35 KB | 5ESS Switching Equipment - Master Control Center / Trunk Line Workstation (6 Ft. 20 In. Depth) Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2M Dwg 3M
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| CD-5D118-01 | | 2A | 1.27 MB | 5ESS Switching Equipment - Switching Module Control Cabinet Circuit | Iss 2A Dwg 2A; App 1AC Dwg 3AC; App 2D Dwg 4D; App 3B Dwg 5B; App 4A Dwg 6A; App 5D Dwg 7D; App 6D Dwg 8D; App 7A Dwg 9A
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| CD-5D119-01 | | 2D | 243.32 KB | 5ESS Switching Equipment - Line Trunk Peripheral Cabinet (6 Ft.) Circuit | Iss 2D Dwg 2D; App 1B Dwg 3B; App 2D Dwg 4D; App 3D Dwg 5D
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| CD-5D119-02 | | 1 | 360.56 KB | 5ESS Switching Equipment - Line Trunk Peripheral Cabinet | Iss 1 Dwg 1; App 1M Dwg 2M; App 2M Dwg 3M; App 3M Dwg 4M; App 4M Dwg 5M; App 5B Dwg 6B
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| CD-5D123-01 | | 2A | 375.81 KB | 5ESS Switching Equipment - Remote Integrated Services Line Unit Cabinet Circuit | Iss 2A Dwg 2A; App 3B Dwg 5B
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| CD-5D129-01 | | 3 | 1.16 MB | 5ESS Switching Equipment - Switching Module Processor Unit, Model 2 Circuit | Iss 3 Dwg 16M; App 1A Dwg 17A; App 2A Dwg 18A; App 3B Dwg 19B; App 4B Dwg 20B
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| CD-5D130-01 | | 5A | 683.80 KB | 5ESS Electronic Switching Equipment - Miscellaneous Cabinet (6 Ft.) Circuit | Iss 5A Dwg 25A; App 1B Dwg 26B; App 2B Dwg 27B; App 3B Dwg 28B; App 4B Dwg 29A; App 5B Dwg 30B; App 6B Dwg 31B; App 7B Dwg 32B
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| CD-5D132-01 | | 1 | 86.20 KB | 5ESS Switching Equipment - 5A RSM Application Schematic | Iss 1 Dwg 1
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| CD-5D133-01 | | 1 | 147.13 KB | 5ESS Switching Equipment - Remote Applications Schematic Circuit | Iss 1 Dwg 1; App 1AC Dwg 2AC; App 2B Dwg 3B; App 3B Dwg 4B; App 4B Dwg 5B
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| CD-5D135-01 | | 2M | 95.30 KB | Electronic Switching Systems - 5ESS - Operator Services Positions System Applications Schematic | Iss 2M Dwg 10M; App 1B Dwg 11B; App 2M Dwg 12M; App 3B Dwg 13B
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| CD-5D136-01 | | 2 | 310.81 KB | 5ESS Switching Equipment - Message Switch Peripheral Unit Circuit | Iss 2 Dwg 4AC; App 1B Dwg 5B; App 2B Dwg 6B; App 3AC Dwg 7AC; App 4B Dwg 8B
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| CD-5D137-01 | | 1 | 143.19 KB | Electronic Switching Systems - 5ESS - Automatic Call Distributor / Management Information System Application Schematic | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3B Dwg 4B; App 4B Dwg 5B
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| CD-5D139-01 | | 1 | 91.37 KB | 5ESS Switching Equipment - Intercabinet Communications Circuit | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-5D140-01 | | 2 | 464.47 KB | 5ESS Switching Equipment - Communication Module, Model 2 Circuit | Iss 2 Dwg 12M; App 1M Dwg 13M; App 2A Dwg 14A; App 3M Dwg 15M; App 4B Dwg 16B; App 5M Dwg 17M
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| CD-5D142-01 | | 1 | 92.54 KB | 5ESS Switching Equipment - Supplementary Trunk Line Work Station (6 Ft. x 20 In. Depth) Circuit | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-5D144-01 | | 2 | 479.80 KB | 5ESS Switching Equipment - Communication Module, Model 2 Circuit | Iss 2 Dwg 8AC; App 1M Dwg 9M; App 2A Dwg 10A; App 4M Dwg 11M; App 5B Dwg 13B; App 6B Dwg 14B
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| CD-5D144-02 | | 2 | 420.12 KB | 5ESS Switching Equipment - Communications Module Model 2 - Double Dual Fabric Circuit | Iss 2 Dwg 3B; App 1M Dwg 4M; App 2A Dwg 5A
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| CD-5D145-01 | | 1 | 421.66 KB | Electronic Switching Systems - 5ESS - Operator Services Position System - Power Distribution Cabinet | Iss 1 Dwg 1; App 1M Dwg 2M
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| CD-5D146-01 | | 2 | 283.20 KB | 5ESS Switching Equipment - Message Switch Cabinet Circuit | Iss 2 Dwg 5B; App 1M Dwg 6M; App 2B Dwg 7B
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| CD-5D147-01 | | 2 | 199.48 KB | 5ESS Switching Equipment - Time Multiplexed Switch Cabinet Circuit | Iss 2 Dwg 3D; App 1B Dwg 4B; App 2B Dwg 5B
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| CD-5D148-01 | | 1 | 20.65 KB | 5ESS Switching Equipment - Alarm and Status Unit Model 2 Circuit | App 2B Dwg 3B
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| CD-5D149-01 | | 1 | 120.33 KB | Electronic Switching Systems - 5ESS Switch - Message Detail Records - Translator Applications Processor Application Schematic | Iss 1 Dwg 1; App 1B Dwg 2B; App 2M Dwg 3M
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| CD-5D151-01 | | 2M | 2.09 MB | 5ESS Switching Equipment - Module Controller and Time Slot Interchange Unit, Model 2 Circuit | Iss 2M Dwg 9M; App 1B Dwg 10B; App 2B Dwg 11B; App 3B Dwg 12B; App 4M Dwg 13M; App 5B Dwg 14B; App 6B Dwg 15B; App 7B Dwg 16B; App 8B Dwg 17B; App 9B Dwg 18B
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| CD-5D151-01 | | 3B | 16.01 KB | 5ESS Switching Equipment - Module Controller and Time Slot Interchange Unit, Model 2 Circuit | Iss 3B Dwg 19B
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| CD-5D160-01 | | 1 | 650.23 KB | 5ESS Switching Equipment - Switching Module Control Cabinet Model 2 Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 2B Dwg 3B; App 3M Dwg 4M; App 4M Dwg 5M; App 5M Dwg 6M; App 6B Dwg 7B; App 7B Dwg 8B; App 8B Dwg 9B
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| CD-5D162-01 | | 1 | 129.98 KB | 5ESS Switching Equipment - 6 Fan Exhaust Unit Circuit | Iss 1 Dwg 1
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| CD-5D168-01 | | 1 | 195.95 KB | 5ESS Switching Equipment - 6 Fan Bi-Directional Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B
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| CD-5D168-02 | | 1 | 203.12 KB | 5ESS Switching Equipment - 6 Fan Bi-Directional Unit Circuit | App 1B Dwg 2B; App 2M Dwg 3M; App 3M Dwg 4M; App 4M Dwg 5M
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| CD-5D171-01 | | 1 | 155.58 KB | Electronic Switching Systems - 5ESS - 3A Simplified Message System - Interface Translator - Application Processor - Application Schematic | Iss 1 Dwg 1; App 1B Dwg 2B; App 2AC Dwg 3AC; App 3B Dwg 4B; App 4B Dwg 5B; App 5B Dwg 6B; App 6B Dwg 7B
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| CD-5D178-01 | | 3B | 207.93 KB | Electronic Switching Systems - 5ESS - Communication Module Processor Unit Circuit | Iss 3B Dwg 3B
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| CD-5D180-01 | | 1 | 750.06 KB | 5ESS Switching Equipment - Line Unit, Model 3 Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 2M Dwg 3M
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| CD-5D190-01 | | 1 | 266.00 KB | 5ESS Switching Equipment - Modular Fuse Filter Unit Circuit | Iss 1 Dwg 1
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| CD-5D191-01 | | 1 | 170.88 KB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Model 3 Circuit | Iss 1 Dwg 1
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| CD-5D191-01 | | 2B | 215.15 KB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Model 3 Circuit | Iss 2B Dwg 2B
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| CD-5D192-01 | | 1 | 633.15 KB | 5ESS Switching Equipment - Integrated Services Line Unit 2 Circuit | Iss 1 Dwg 1
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| CD-5D194-01 | | 1 | 63.35 KB | 5ESS Switching Equipment - Fuse / Filter Unit Model 5 Circuit | Iss 1 Dwg 1
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| CD-5D195-01 | | 1 | 2.94 MB | 5ESS Switching Equipment - Switch Module Processor Model 4 (SMPU4) Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 2B Dwg 3B
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| CD-5D196-01 | | 2B | 2.03 MB | 5ESS Switching System - Time Slot Interchange Unit Model 4 (TSIU4) Circuit | Iss 2B Dwg 2B; App 1M Dwg 3M; App 2B Dwg 4B
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| CD-5D197-01 | | 1 | 235.25 KB | 5ESS Switching Systems - Digital Service Unit Model 3 Circuit | Iss 1 Dwg 1; App 1M Dwg 2M
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| CD-5D201-01 | | 2B | 389.64 KB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit Circuit | Iss 2B Dwg 4B; App 1D Dwg 5D; App 2AC Dwg 6AC; App 3A Dwg 7A; App 4B Dwg 8B; App 5B Dwg 9B; App 6M Dwg 10M; App 7M Dwg 11M; App 8B Dwg 12B
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| CD-5D202-01 | | 2A | 1.78 MB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit Circuit | Iss 2A Dwg 2A; App 1M Dwg 3M; App 2B Dwg 4B
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| CD-5D202-02 | | 1 | 89.51 KB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-5D203-01 | | 1 | 98.22 KB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit-Supplement Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 2B Dwg 3B
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| CD-5D203-02 | | 1 | 83.38 KB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit-Supplement Circuit | Iss 1 Dwg 1; App 1 Dwg 2B
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| CD-5D204-01 | | 1 | 180.48 KB | 5ESS Switching Equipment - Digital Line Trunk Unit - Remote Integrated Services Line Unit Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3B Dwg 4B; App 4B Dwg 5B
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| CD-5D205-01 | | 2B | 119.01 KB | 5ESS Switching Equipment - Digital Line Trunk Unit Model 2 | Iss 2B Dwg 4B; App 1B Dwg 5B
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| CD-5D300-01 | | 2D | 256.24 KB | Electronic Switching Systems - 5ESS - Trunk Unit Circuit | Iss 2D Dwg 5D; App 1A Dwg 6A; App 2D Dwg 7D; App 3AC Dwg 8AC; App 4AC Dwg 9AC
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| CD-5D301-01 | | 1 | 850.82 KB | 5ESS Switching Equipment - IDCU Integrated Digital Carrier Unit Circuit | Iss 1 Dwg 1; App 1M Dwg 2M
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| CD-5D401-01 | | 1 | 679.47 KB | 5ESS Switching Equipment - Facilities Interface Unit Model 2 Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2AC Dwg 3AC; App 3A Dwg 4A; App 4AC Dwg 5AC; App 5A Dwg 6A; App 6M Dwg 7M; App 7B Dwg 8B
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| CD-5D401-02 | | 1 | 518.98 KB | 5ESS Switching Equipment - Facilities Interface Unit Model 3 Unit | App 2M Dwg 3M; App 3A Dwg 4A; App 4B Dwg 5B
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| CD-5D500-01 | | 1 | 156.91 KB | Electronic Switching Equipment - 5ESS/International - Power Line Filter Unit Circuit | Iss 1 Dwg 1
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| CD-5D501-01 | | 1 | 108.79 KB | 5ESS Switching Equipment - Digital Line and Trunk Unit Model 3 | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-5D502-01 | | 1 | 64.81 KB | Electronic Switching Systems - 5ESS - Switch Communications Adapter Translator - Application Processor Application Schematic | Iss 1 Dwg 1
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| CD-5D503-01 | | 1 | 134.05 KB | 5ESS Switching Equipment - Enhanced 911 Service Adjunct (ESA) Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 3B Dwg 4B
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| CD-5D503-02 | | 2M | 146.61 KB | 5ESS Switching Equipment - Enhanced 911 Service Adjunct (ESA) Circuit (Single and Multiple Switch Applications) | Iss 2M Dwg 10M; App 1M Dwg 11M
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| CD-5D505-01 | | 1 | 109.22 KB | Electronic Switching Systems - 5ESS - Advanced Communication Package Version 7 Application Schematic | Iss 1 Dwg 1; App 1M Dwg 2M
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| CD-5D507-01 | | 1 | 143.86 KB | 5ESS Switching Equipment - OSPS-AP Cluster Cabinet Circuit | Iss 1 Dwg 1; App 1M Dwg 2M
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| CD-5D508-01 | | 1 | 452.97 KB | 5ESS Switching Equipment - Message Switch Control Unit Model 3 Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2M Dwg 3M
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| CD-5D511-01 | | 1 | 54.60 KB | Electronic Switching Systems - 5ESS - Micro Electronic Directory System - Application Processor Application Schematic | Iss 1 Dwg 1
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| CD-5D513-01 | | 1 | 946.19 KB | 5ESS Switching Systems - Communications Module Unit Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2M Dwg 3M; App 3M Dwg 4M; App 4B Dwg 5B
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| CD-5D515-01 | | 1 | 216.31 KB | International 5ESS Switching Equipment - Mesh Earthing Building Circuit | Iss 1 Dwg 1
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| CD-5D517-01 | | 1 | 188.21 KB | 5ESS Switching Equipment - Remote Line Group Unit Circuit | Iss 1 Dwg 1
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| CD-5D518-01 | | 1 | 171.48 KB | 5ESS Switching Systems - Switching Module 2000 Application Schematic | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-5D519-01 | | 1 | 189.89 KB | 5ESS Switching Equipment - Application Schematic for the 5ESS-2000 Switch (Administrative Workstation and Very Compact Digital Exchange) | Iss 1 Dwg 1; App 1M Dwg 2M; App 2M Dwg 3M; App 3M Dwg 4M
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| CD-5D523-01 | | 1 | 1.31 MB | 5ESS Switching Equipment - Packet Switch Unit Model 2 | Iss 1 Dwg 1
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| CD-5D524-01 | | 1 | 41.57 KB | Electronic Switching Systems - 5ESS - Ovation Voice Processing System Application Schematic | Iss 1 Dwg 1
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| CD-5D525-01 | | 1 | 152.83 KB | 5ESS Switching Equipment - Digital Network Unit-SONET (DNU-S) Circuit | Iss 1 Dwg 1
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| CD-5D527-01 | | 1 | 41.66 KB | Electronic Switching Systems - 5ESS - Intelligent Network Application Schematic | Iss 1 Dwg 1
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| CD-5D530-01 | | 1 | 356.76 KB | 5ESS Switching Equipment - Combined Services Unit Circuit | App 1B Dwg 2B
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| CD-5D534-01 | | 1 | 186.56 KB | 5ESS Switching Systems - Administrative Workstation / Switching Module 2000 Application Schematic | Iss 1 Dwg 1
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| CD-5D536-01 | | 1 | 2.07 MB | 5ESS Switching Equipment - Module Controller and Time Slot Interchanger Unit Model 3 Circuit | Iss 1 Dwg 1
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| CD-5E001-01 | | 1 | 1.79 MB | PBX Systems - Trunk Circuit to Central Office for No. 701A, 701B, 701PK, 702A, 711A, 711B, 711PK or 740E or Two-Way - Manual and Dial Selected for No. 701A, 701B, 701PK or 740E or Two-Way - Manual Selected for No. 800A | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4AC Dwg 4AC
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| CD-5E001-01 | | 3B | 7.95 MB | PBX Systems - Trunk Circuit to Central Office for No. 701A, 701B, 701PK, 702A, 711A, 711B, 711PK, 740E or 756A or Two-Way-Manual and Dial Selected for No. 701A, 701B, 701PK or 740E or Two-Way-Manual Selected for No. 800A | Iss 3B Dwg 10B; App 1D Dwg 11D
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| CD-5E003-01 | | 1 | 699.52 KB | PBX Systems - No. 756A - Inward Restriction Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D
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| CD-5E021-01 | | 2D | 2.01 MB | PBX Systems - No. 756A - Station Message Register Pulse and Surcharge Circuit | Iss 2D Dwg 4D; App 1B Dwg 5B; App 2A Dwg 6A; App 3D Dwg 7D
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| CD-5E029-01 | | 2D | 2.10 MB | PBX Systems - No. 756A - Make Busy & Busy Display Circuit | Iss 2D Dwg 5D; App 1D Dwg 6D
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| CD-5E037-01 | | 1 | 597.27 KB | PBX Systems - Voltage Reduction Detector at Midpoint of Voltage Divider Network | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D
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| CD-5X201-01 | | 1 | 2.15 MB | 5ESS Switching Equipment - Global Digital Service Unit - Export Circuit | Iss 1 Dwg 1; App 2B Dwg 3B; App 3A Dwg 4A; App 4B Dwg 5B; App 5B Dwg 6B
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| CD-5X202-01 | | 1 | 152.81 KB | 5ESS Export - Periodic Pulse Metering Circuit | Iss 1 Dwg 1
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| CD-5X204-01 | | 1 | 268.51 KB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Line Trunk Unit - Export Circuit | Iss 1 Dwg 1; App 2B Dwg 3B
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| CD-5X205-01 | | 1 | 535.40 KB | 5ESS Switching Equipment - Line Unit Model 2 Export Circuit | Iss 1 Dwg 1; App 1AC Dwg 2AC; App 2A Dwg 3A
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| CD-5X213-01 | | 2M | 369.98 KB | 5ESS Switching Equipment - Echo Canceler Signaling Unit Circuit | Iss 2M Dwg 2M
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| CD-5X214-01 | | 1 | 189.80 KB | Electronic Switching Systems - 5ESS Operator Services Position System (OSPS) International Application Schematic | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3M Dwg 4M; App 4B Dwg 5B; App 5M Dwg 6M; App 6B Dwg 7B; App 7B Dwg 8B; App 8AC Dwg 9AC
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| CD-5X214-01 | | 2B | 84.57 KB | Electronic Switching Systems - 5ESS Operator Services Position System (OSPS) International Application Schematic | Iss 2B Dwg 10B; App 1B Dwg 11B; App 2B Dwg 12B; App 3B Dwg 13B
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| CD-5X215-02 | | 1 | 167.32 KB | 5ESS Switching Equipment - Export Dataset Cabinet Application Schematic Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 2B Dwg 3B; App 3A Dwg 4A; App 4B Dwg 5B; App 5B Dwg 6B
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| CD-5X220-01 | | 1 | 114.29 KB | 5ESS Switching Equipment - International Modem Pooling Cabinet Application Schematic | Iss 1 Dwg 1
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| CD-5X221-01 | | 1 | 322.17 KB | 5ESS Switching Equipment - Digital Conference Switching System Cabinet Circuit | Iss 1 Dwg 1; App 1M Dwg 2M; App 2B Dwg 3B; App 3B Dwg 4B
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| CD-5X224-01 | | 1 | 33.62 KB | 5ESS Switching Equipment - Digital Test Access Circuit | App 1M Dwg 2M; App 2M Dwg 3M
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| CD-62440-01 | | 31 | 561.94 KB | Toll Systems - Switchboard No. 3 and Tandem Switchboard No 3 - Key Sheet | Iss 31 Dwg 31
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| CD-62831-01 | | 8D | 780.77 KB | Toll Systems - Toll Switchboard No. 3, 3C, 3CL or 3CF - Tone Jack Circuit | Iss 8D Dwg 15D; App 1B Dwg 16B
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| CD-64098-01 | | 3B | 741.41 KB | Toll Systems - Transmission Measuring - 1U Amplifier Rectifier with Battery Supply | Iss 3B Dwg 15B; App 1B Dwg 16B
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| CD-64741-01 | | 3D | 573.70 KB | Toll Systems - Toll Switchboard No. 3C, 3CL or 3CF - Toll Testboard No. 17B or 18B - Position Dial Circuit for Repeated Dialing Arranged for Reassociation of Dial Ckt. And for Automatic Start of Ringing | Iss 3D Dwg 16D; App 1D Dwg 17D; App 2D Dwg 18D
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| CD-64800-01 | | 15 | 407.23 KB | Toll Systems - Toll Switchboard No. 3C or 3CL - Keysheet | Iss 15 Dwg 15
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| CD-65657-01 | | 11AC | 5.77 MB | PBX Systems - No. 701A, 701B, 701PK, 702A, 711A, 711B, 711PK or 740E - One-Way Trunk Circuit to Central Office - Outgoing Dial Selected - or No. 701A, 701B, 701PK, or 740E - Two-Way Trunk Circuit to Central Office - Manual and Dial Selected | Iss 11AC Dwg 24AC; App 1D Dwg 25D; App 2D Dwg 26D; App 3D Dwg 27D; App 4AC Dwg 28AC; App 5D Dwg 29D
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| CD-65677-01 | | 4D | 319.32 KB | PBX Systems - Test Terminal Circuit for Battery and Ground | Iss 4D Dwg 5D; App 1D Dwg 6D
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| CD-65680-01 | | 13D | 849.85 KB | PBX Systems - No. 507A or 507B - Station Line, Trunk, Connecting, Telephone, Ringing, Buzzer and 2 Way Ringdown Tie Trunk Circuits Arranged for Use with Manual or Dial Central Offices | Iss 13D Dwg 13D
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| CD-65718-01 | | 10B | 17.02 MB | PBX Systems - Tie Trunk Circuit - No. 552A, 552D, 556A, 605A, 606A, 606B, 607A, 607B, 608A, 608B, 608D, 701A, 701B, 701PK, 702A, 711A, 711B, 711PK, 740E, 756A, 757A, or 800A - Outgoing Manual and Dial Selected and Dial Repeating Incoming Pulse Correcting with or without E and M Lead Supervision | Iss 10B Dwg 28B
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| CD-65718-01 | | 9AC | 14.13 MB | PBX Systems - Tie Trunk Circuit - No. 552A, 552D, 556A, 605A, 606A, 606B, 607A, 607B, 608A, 608B, 608D, 701A, 701B, 701PK, 702A, 711A, 711B, 711PK, 740E, 756A, 757A or 800A - Outgoing Manual and Dial Selected and Dial Repeating Incoming Pulse Correcting with or without E and M Lead Supervision | Iss 9AC Dwg 21AC; App 1D Dwg 22D; App 2AC Dwg 23AC; App 3D Dwg 24D; App 4B Dwg 25B
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| CD-65719-01 | | 6D | 831.66 KB | PBX Systems - No. 550B, 550C, 550SC, 551A, 551B, 551D, 552A, 552B, 552D, 552E, 555, 556A, 605A, 606B, 607A, 607B, or 608A - Manual Conference Circuit with Voice Repeater Arranged for a Maximum of 4 or 5 Simultaneous Connections (Man Conf) | Iss 6D Dwg 6D; App 1D Dwg 7D
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| CD-65719-01 | | 8D | 620.76 KB | PBX Systems - No. 550B, 550C, 550SC, 551A, 551B, 551D, 552A, 552B, 552D, 552E, 555, 556A, 605A, 606B, 607A, 607B, or 608A - Manual Conference Circuit with Voice Repeater Arranged for a Maximum of 4 or 5 Simultaneous Connections | App 1D Dwg 10D
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| CD-65729-01 | | 11A | 177.44 KB | PBX Systems - No. 557B - Secretarial Line and Central Office Trunk Circuits | Iss 11A Dwg 17A; App 1B Dwg 18B
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| CD-65731-01 | | 12B | 19.17 KB | PBX Systems - No. 557B - Cord, Telephone, Dial, Auxiliary Signal, Station Line, Ringing and Battery, Fuse Alarm, Station Conference Position Splitting and Grouping Circuits | App 6A Dwg 18A
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| CD-65731-01 | | 14A | 175.88 KB | PBX Systems - No. 557B - For Telephone Answering Service Position and Station Circuits | Iss 14A Dwg 21A; App 1B Dwg 22B
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| CD-65733-01 | | 5D | 304.59 KB | PBX Systems - No. 507A or 507B - 2 Way Automatic Tie Trunk Circuit | Iss 5D Dwg 5D
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| CD-65741-01 | | 5D | 5.91 MB | PBX Systems - No. 756A - Line, Link and Marker Circuit | Iss 5D Dwg 23D; App 1D Dwg 24D; App 2D Dwg 25D; App 3AC Dwg 26AC
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| CD-65741-01 | | 9D | 19.20 MB | PBX Systems - No. 756A - Line, Link and Marker Circuit | Iss 9D Dwg 46D; App 1D Dwg 47D; App 2B Dwg 48B; App 3A Dwg 49A; App 4B Dwg 50B; App 5B Dwg 51B; App 6D Dwg 52D; App 7D Dwg 53D
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| CD-65742-01 | | 12B | 1.49 MB | PBX Systems - No. 756A - Dial Pulse Register Circuit | Iss 12B Dwg 18B; App 1B Dwg 19B; App 2B Dwg 20B; App 3B Dwg 21B; App 4D Dwg 22D; App 5AC Dwg 23AC
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| CD-65742-01 | | 14D | 4.03 MB | PBX Systems - No. 756A - Dial Pulse Register Circuit | Iss 14D Dwg 30D; App 1D Dwg 31D; App 2D Dwg 32D
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| CD-65744-01 | | 1 | 932.38 KB | PBX Systems - No. 756A - Traffic Register Circuit for Internal Traffic and Trouble Registers | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D
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| CD-65745-01 | | 5AC | 611.75 KB | PBX Systems - No. 756A - Dial Conference Circuit Arranged for a Maximum of 5 Simultaneous Connections | Iss 5AC Dwg 5AC; App 1D Dwg 6D
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| CD-65746-01 | | 2B | 1021.88 KB | PBX Systems - No. 756A - PBX Cabling Diagram | Iss 2B Dwg 3B; App 10D Dwg 13D; App 11B Dwg 14B; App 12D Dwg 15D; App 13B Dwg 16B; App 14D Dwg 17D; App 15B Dwg 18B; App 16B Dwg 19B; App 17B Dwg 20B; App 18D Dwg 21D; App 19AC Dwg 22AC; App 1B Dwg 4B; App 20B Dwg 23B; App 21D Dwg 24D; App 22D Dwg 25D; App 23D Dwg 26D; App 24D Dwg 27D; App 2D Dwg 5D; App 3D Dwg 6D; App 4B Dwg 7B; App 5B Dwg 8B; App 6D Dwg 9D; App 7D Dwg 10D; App 8B Dwg 11B; App 9D Dwg 12D
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| CD-65746-01 | | 3D | 288.27 KB | PBX Systems - No. 756A - PBX Cabling Diagram | Iss 3D Dwg 41D; App 1B Dwg 42B; App 2B Dwg 43B; App 3A Dwg 44A; App 4A Dwg 45A; App 5B Dwg 46B; App 6D Dwg 47D; App 7B Dwg 48B; App 8D Dwg 49D; App 9D Dwg 50D; App 10B Dwg 51B; App 11B Dwg 52B; App 12D Dwg 53D
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| CD-65746-01 | | 4D | 571.80 KB | PBX Systems - No. 756A - PBX Cabling Diagram | Iss 4D Dwg 54D; App 1D Dwg 55D; App 2D Dwg 56D
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| CD-65747-01 | | 7D | 899.46 KB | PBX Systems - No. 558A System, 756A, 800A, 801A, 812A PBX or Switching System No. 400 - Loudspeaker Paging Trunk Circuit | Iss 7D Dwg 10D; App 1D Dwg 11D; App 2D Dwg 12D
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| CD-65750-01 | | 4B | 460.63 KB | PBX Systems - No. 756A - Junctor Circuit | Iss 4B Dwg 5B; App 1B Dwg 6B; App 2D Dwg 7D; App 3D Dwg 8D
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| CD-65750-01 | | 5D | 1002.47 KB | PBX Systems - No. 756A - Junctor Circuit | Iss 5D Dwg 10D
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| CD-65752-01 | | 11D | 3.86 MB | PBX Systems - No. 756A - Two Way Trunk Circuit to Central Office | Iss 11D Dwg 18D
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| CD-65752-01 | | 13B | 10.59 MB | PBX Systems - No. 756A - Two-Way Trunk Circuit to Central Office | Iss 13B Dwg 35B; App 1A Dwg 36A; App 2B Dwg 37B; App 3B Dwg 38B; App 4B Dwg 39B; App 5B Dwg 40B; App 6D Dwg 41D; App 7D Dwg 42D; App 8D Dwg 43D
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| CD-65753-01 | | 7B | 800.38 KB | PBX Systems - No. 756A - Attendant Trunk Circuit | Iss 7B Dwg 11B; App 1B Dwg 12B; App 2D Dwg 13D
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| CD-65753-01 | | 8D | 2.42 MB | PBX Systems - No. 756A - Attendant Trunk Circuit | Iss 8D Dwg 18D; App 1D Dwg 19D; App 2D Dwg 20D; App 3D Dwg 21D
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| CD-65754-01 | | 3D | 696.65 KB | PBX Systems - No. 756A - Busy Tone Trunk Circuit | Iss 3D Dwg 5D; App 1D Dwg 6D; App 2D Dwg 7D
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| CD-65756-01 | | 5D | 3.82 MB | PBX Systems - No. 756A - Tie Trunk Circuit - Outgoing Manual and Dial Selected with 2 Second Ringing Signal - Incoming Ringdown | Iss 5D Dwg 8D; App 1D Dwg 9D; App 2D Dwg 10D
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| CD-65757-01 | | 5B | 1.23 MB | PBX Systems - No. 756A - Cordless Position Circuit | Iss 5B Dwg 6B; App 1D Dwg 7D; App 2D Dwg 8D; App 3D Dwg 9D
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| CD-65757-01 | | 6D | 3.19 MB | PBX Systems - No. 756A - Cordless Position Circuit | Iss 6D Dwg 14D; App 1D Dwg 15D; App 2D Dwg 16D; App 3D Dwg 17D
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| CD-65761-01 | | 12B | 978.42 KB | PBX Systems - No. 701B, 701PK, 711B, or 711PK - Miscellaneous Alarm Circuit | Iss 12B Dwg 26B; App 1D Dwg 27D
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| CD-65761-02 | | 1 | 6.45 MB | PBX Systems - No. 701B or 711B - Miscellaneous Alarm Circuit | Iss 1 Dwg 1; App 1B Dwg 2B; App 2D Dwg 3D; App 3D Dwg 4D
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| CD-65771-01 | | 7D | 1.40 MB | PBX Systems - No. 552A, 552B, 552D, 552E, 605A, 607A, 607B, 701B, 701PK, 711B or 711PK - Ringing Leads Circuit | Iss 7D Dwg 11D; App 1D Dwg 12D; App 2D Dwg 13D; App 3D Dwg 14D
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| CD-65773-01 | | 5D | 104.85 KB | PBX Systems - No. 552A, 552D, 556A, 605A, 608A, 701B, 711B, or 740E - Battery Cut-Off Circuit | Iss 5D Dwg 6D
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| CD-65774-01 | | 4D | 542.53 KB | PBX Systems - No. 701B, 701PK, 711B or 711PK - Traffic Register Circuit - No. 607A, 607B or 608A - Switchboard Peg Count Circuit | Iss 4D Dwg 9D
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| CD-65778-01 | | 4D | 312.95 KB | PBX Systems - No. 552A, 552B, 552D, 552E, 605A, 607A, 607B, or 608A - Jack Circuit for Attendant Switchboard Positions | Iss 4D Dwg 6D; App 1D Dwg 7D
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| CD-65779-01 | | 5B | 817.79 KB | PBX Systems - Fuse Alarm Circuit for Relay Rack or Apparatus Cabinet Mounted Equipment - Dial or Manual PBX | Iss 5B Dwg 7B
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| CD-65786-01 | | 2D | 1.16 MB | P.B.X. Systems - No. 552A, 552B, 552D or 552E - Auxiliary Signal, Battery Cut-Off, Buzzer, Fuse Alarm and Night Alarm Circuit | Iss 2D Dwg 2D; App 1D Dwg 3D; App 2D Dwg 4D; App 3D Dwg 5D
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| CD-65787-01 | | 1 | 1.36 MB | PBX Systems - No. 552A, 552B, 552D, 552E, or 605A - Attendant Telephone and Dial Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 6D Dwg 7D
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| CD-65792-01 | | 5B | 3.75 MB | PBX Systems - No. 700C, 701A, 701B, or 702A - Incoming Trunk Circuit for Inward Dialing from Step-by-Step or Crossbar Tandem Office or Distant PBX Arranged to Transfer Calls to PBX Attendant | Iss 5B Dwg 10B; App 1B Dwg 11B; App 2D Dwg 12D
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| CD-65799-01 | | 1 | 1.17 MB | PBX Systems - No. 701A, 701B or 740E - Auxiliary Line Circuit for Use Between Selector Bank Multiple and Station Line Circuit to Provide for Single Digit Access to the Associated Stations | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-65816-01 | | 6AC | 1.33 MB | PBX Systems - No. 701B - Register Sender Circuit Arranged to Convert 2 out of 5 Ground Pulses to Dial Pulses | Iss 6AC Dwg 12AC; App 1D Dwg 13D
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| CD-65901-01 | | 4D | 4.30 MB | PBX Systems - No. 701A, 701B, 701PK, 702A, 711A, 711B or 711PK - Line or Trunk Finder Circuit with Associated Common Group and Subgroup Circuit for Line Finder Applications Arranged for Restricted Service | App 8D Dwg 17D; App 9B Dwg 18B
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| CD-65901-01 | | 5B | 3.89 MB | PBX Systems - No. 701A, 701B, 701PK, 702A, 711A, 711B or 711PK - Line or Trunk Finder Circuit with Associated Common Group and Subgroup Circuit for Line Finder Applications Arranged for Restricted Service | Iss 5B Dwg 19B; App 1D Dwg 20D
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| CD-65910-02 | | 1D | 196.01 KB | PBX Systems - No. 756A - Current Drain Data | Iss 1D Dwg 2D; App 1D Dwg 3D
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| CD-65942-01 | | 3B | 1.15 MB | PBX Systems - No. 756A - Auxiliary Relay Circuit for Direct Station Selection from Stations | Iss 3B Dwg 6B; App 1B Dwg 7B; App 2D Dwg 8D
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| CD-66010-01 | | 4D | 972.41 KB | PBX Systems - No. 701A, 701B, 711A or 711B - Second Selector Circuit | Iss 4D Dwg 23D
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| CD-66011-01 | | 3D | 2.56 MB | PBX System - No. 552A, 605A or 701A - Cord Circuit for Use in Multiple or Nonmultiple Switchboards | Iss 3D Dwg 3D; App 1D Dwg 4D; App 2D Dwg 5D
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| CD-66016-01 | 1931-06-19 | 1 | 2.27 MB | P.B.X. Systems - No. 605-A, 701-A, or 711-A - Ringing Leads Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D
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| CD-66018-01 | 1933-11-20 | 2A | 2.04 MB | P.B.X. Systems - No. 605-A or 701-A - Night Alarm Circuit for Use in Multiple Switchboard | Iss 2A Dwg 2A; App 1D Dwg 3D; App 2D Dwg 4D; App 3A Dwg 5A
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| CD-66019-01 | 1931-07-08 | 3D | 2.56 MB | P.B.X. Systems - No. 605-A - Fuse and Power Alarm Circuit | Iss 3D Dwg 3D; App 1A Dwg 4A; App 2D Dwg 5D
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| CD-66020-01 | | 1 | 3.72 MB | P.B.X. Systems - No. 552-D, 552-E, 605-A or 701-A - Station Line Circuit for Multiple Switchboard with or without Line Relay | Iss 1 Dwg 1; App 10D Dwg 11D; App 11D Dwg 12D; App 12D Dwg 13D; App 1A Dwg 2A; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5A Dwg 6A; App 6D Dwg 7D; App 7D Dwg 8D; App 8B Dwg 9B; App 9D Dwg 10D
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| CD-66034-01 | | 2D | 1.45 MB | PBX Systems - No. 701A or 740E - Intercepting Trunk Circuit from Connector Terminals | Iss 2D Dwg 8D; App 1D Dwg 9D; App 2D Dwg 10D; App 3D Dwg 11D; App 4D Dwg 12D; App 5D Dwg 13D; App 6D Dwg 14D; App 7D Dwg 15D; App 8D Dwg 16D
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| CD-66035-01 | | 5D | 1.42 MB | P.B.X. Systems - No. 701A or 740E - Trunk Circuit to P.B.X. Attendant from Selector Levels for Use on Calls to Attendant from Dial Stations or for Use with One Way Toll Diverting Trunks to Panel Office | Iss 5D Dwg 15D; App 1D Dwg 16D; App 2D Dwg 17D; App 3D Dwg 18D; App 4D Dwg 19D; App 5D Dwg 20D
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| CD-66036-01 | | 9D | 626.04 KB | P.B.X. Systems - No. 552A, 552D, 556A, 605A, 701A, 740E or 740AX - Battery Cut-Off Circuit | Iss 9D Dwg 19D; App 1D Dwg 20D; App 2D Dwg 21D
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| CD-66037-01 | | 5D | 1.03 MB | PBX Systems - No. 701A, 701B, 701PK, 711A, 711B, or 711PK - Test Line Circuit for Testing Connector and Selector Connector Circuits | Iss 5D Dwg 18D; App 1D Dwg 19D; App 2B Dwg 20B; App 3D Dwg 21D; App 4D Dwg 22D; App 5D Dwg 23D; App 6AC Dwg 24AC; App 7D Dwg 25D
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| CD-66037-01 | | 6D | 810.84 KB | PBX Systems - No. 701A, 701B, 701PK, 711A, 711B, or 711PK - Test Line Circuit for Testing Connector and Selector Connector Circuits | Iss 6D Dwg 26D; App 1D Dwg 27D
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| CD-66073-01 | | 17B | 503.30 KB | PBX systems - No. 701A, 701B, 711A, 711B, 740A, 740B, 740C or 740E - Test Set Circuit for Testing Line Finder, Trunk Finder, Connector, Selector and Selector Connector Circuits | Iss 17B Dwg 17B; App 1D Dwg 18D
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| CD-66129-01 | | 3D | 1.79 MB | PBX Systems - No. 605A or 701A - Attendant's Telephone and Dial Circuit | Iss 3D Dwg 13D
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| CD-66137-01 | | 4D | 7.37 MB | P.B.X. Systems - No. 606B, 701A, or 711A - Miscellaneous Alarm Circuit | Iss 4D Dwg 10D; App 1D Dwg 11D; App 2D Dwg 12D; App 3D Dwg 13D
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| CD-66144-01 | | 6D | 583.52 KB | PBX Systems - No. 701A, 701B, 711A, 711B or 740E - Connector Circuit - Rotary Hunting - One Ring | Iss 6D Dwg 22D
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| CD-66144-01 | | 7D | 2.51 MB | PBX Systems - No. 701A, 701B, 701PK, 711A, 711B, 711PK, or 740E - Connector Circuit - Rotary Hunting - One Ring | Iss 7D Dwg 23D; App 1D Dwg 24D; App 2D Dwg 25D; App 3D Dwg 26D; App 4AC Dwg 27AC; App 5AC Dwg 28AC; App 6D Dwg 29D; App 7D Dwg 30D; App 8D Dwg 31D; App 9B Dwg 32B
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| CD-66197-01 | | 14D | 315.52 KB | P.B.X. Systems - Grounding Circuit | Iss 14D Dwg 18D; App 1D Dwg 19D
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| CD-66198-01 | | 1 | 2.91 MB | PBX Systems - No. 552A, 552B, 552D, 552E, 605A, or 701A - Cord Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D; App 6 Dwg 7; App 7D Dwg 8D; App 8D Dwg 9D
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| CD-66273-01 | | 1 | 766.15 KB | PBX Systems - No. 552A, 552B, 552D, 552E or 605A - Position Grouping Key Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D
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| CD-66359-01 | | 4B | 1.81 MB | PBX Systems - No. 701A, 701B, 701PK, 711A, 711B, 711PK or 740E - First Selector Circuit Arranged for Restricted Service | Iss 4B Dwg 21B; App 1D Dwg 22D; App 2D Dwg 23D; App 3D Dwg 24D; App 4D Dwg 25D
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| CD-66360-01 | | 5D | 1.84 MB | PBX Systems - No. 701A, 701B, 701PK, 711A, 711B, 711PK or 740E - Incoming First Selector Circuit Arranged for Operation with Dial Repeating Tie Trunks or Incoming Trunks for Inward Dialing | Iss 5D Dwg 22D; App 1D Dwg 23D; App 2D Dwg 24D; App 3AC Dwg 25AC; App 4D Dwg 26D; App 5D Dwg 27D; App 6D Dwg 28D; App 7B Dwg 29B
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| CD-66425-01 | | 3D | 1.82 MB | P.B.X. Systems - No. 552A, 552B, 552D, 552E, 605A or 701A - Attendants Telephone and Dial Circuit | Iss 3D Dwg 7D; App 1D Dwg 8D; App 2B Dwg 9B; App 3D Dwg 10D; App 4D Dwg 11D; App 5D Dwg 12D
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| CD-66462-01 | | 3D | 828.67 KB | PBX Systems - No. 552A, 552B, 552E, 556A, 605A or 608A - Manual Conference Circuit Arranged for a Maximum of 4 or 5 Simultaneous Connections | Iss 3D Dwg 9D; App 1D Dwg 10D; App 2D Dwg 11D; App 3D Dwg 12D
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| CD-66574-01 | | 4D | 781.56 KB | PBX Systems - No. 552A, 552D, 605A, or 701A - Cord and Dial Circuits - Modification of Existing Circuits to Extend Trunk and Station Range and to Remove Ringing Bridge | Iss 4D Dwg 5D; App 1D Dwg 6D
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| CD-66715-01 | | 6D | 1.31 MB | PBX Systems - No. 701B, 701PK, 711B or 711PK - Station Line Circuit - Individual or 2 Party Selective Ringing with or without Restricted Service | Iss 6D Dwg 15D; App 1D Dwg 16D; App 2D Dwg 17D; App 3D Dwg 18D; App 4D Dwg 19D
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| CD-66716-01 | | 4D | 1.15 MB | PBX Systems - No. 701A, 701B, 701PK or 740E - Intercepting Trunk Circuit from Vacant Selector Levels - Attendant Trunk Circuit for Use Where Tie Trunk Circuits are Connected to Station Line Circuits, Incoming Selector, or Selector Connector Circuits | Iss 4D Dwg 4D; App 1D Dwg 5D; App 2D Dwg 6D; App 3D Dwg 7D; App 4D Dwg 8D; App 5D Dwg 9D
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| CD-66717-01 | | 6D | 1.28 MB | PBX Systems - No. 701A, 701B, 701PK or 740E - Attendant Trunk Circuit from Selector or Selector Connector Levels | Iss 6D Dwg 9D; App 1D Dwg 10D; App 2D Dwg 11D; App 3D Dwg 12D; App 4D Dwg 13D; App 5D Dwg 14D
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| CD-66796-01 | | 2D | 617.48 KB | PBX Systems - No. 756A - Alarm, Transfer & Test Circuit | Iss 2D Dwg 4D
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| CD-66796-01 | | 4B | 1.41 MB | PBX Systems - No. 756A - Alarm, Transfer and Test Circuit | Iss 4B Dwg 14B; App 1D Dwg 15D; App 2D Dwg 16D
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| CD-66892-01 | | 2A | 1.42 MB | PBX Systems - 701A, 701B, 711A, 711B or 740E - "TOUCH-TONE" to Dial Pulse Solid State Converter Circuit - 14 Digits | Iss 2A Dwg 2A; App 1B Dwg 3B; App 2A Dwg 4A; App 3B Dwg 5B
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| CD-66902-01 | | 2D | 6.34 MB | PBX Systems - No. 756A - Dial Conference Trunk Circuit - Station Controlled | Iss 2D Dwg 5D; App 1D Dwg 6D; App 2A Dwg 7A; App 3D Dwg 8D; App 4B Dwg 9B; App 5D Dwg 10D
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| CD-66908-01 | | 2A | 3.42 MB | PBX Systems - No. 756A - Dial Conference Trunk Circuit - Attendant Controlled | Iss 2A Dwg 4A; App 1B Dwg 5B; App 2B Dwg 6B; App 3B Dwg 7B; App 4D Dwg 8D
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| CD-66909-01 | | 2D | 1.88 MB | PBX Systems - No. 756A - Station Dial Transfer Controller Circuit | Iss 2D Dwg 6D; App 1B Dwg 7B; App 2D Dwg 8D
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| CD-66910-01 | | 2D | 2.07 MB | PBX Systems - No. 756A - Auxiliary Position Circuit for Remote Answering of Trunks and Inward Completion By Any Station | Iss 2D Dwg 5D; App 1D Dwg 6D
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| CD-66911-01 | | 3D | 1.28 MB | PBX Systems - No. 756A - Busy Verification Auxiliary Trunk Circuit | Iss 3D Dwg 7D; App 1D Dwg 8D
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| CD-66920-01 | | 1 | 165.15 KB | PBX Systems - No. 756A - Feature Cabling Diagram | Iss 1 Dwg 1; App 1B Dwg 2B; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5AC Dwg 6AC
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| CD-66920-01 | | 2D | 93.78 KB | PBX Systems - No. 756A - Feature Cabling Diagram | Iss 2D Dwg 15D; App 1D Dwg 16D; App 2D Dwg 17D; App 3D Dwg 18D; App 4D Dwg 19D
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| CD-66920-01 | | 3D | 378.01 KB | PBX Systems - No. 756A - Feature Cabling Diagram | Iss 3D Dwg 20D; App 1D Dwg 21D; App 2D Dwg 22D
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| CD-66921-01 | | 2D | 3.92 MB | PBX Systems - No. 756A - Station Dial Transfer Trunk Circuit with Add-On Conference | Iss 2D Dwg 9D; App 1B Dwg 10B; App 2D Dwg 11D; App 3D Dwg 12D
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| CD-67025-01 | | 1 | 463.58 KB | PBX Systems - Transmission Test Line - Termination Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2B Dwg 3B
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| CD-69000-01 | | 26D | 2.89 MB | Station Systems - No. 100 Key Equipment - Multiple Line - Line and Auxiliary Signal Circuit for Use with Central Office or PBX with or without Arrangement to Retire Line Signal When Line is Released at Central Office or PBX Arranged for Intercommunicating Service | Iss 26D Dwg 26D
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| CD-69001-01 | | 15D | 2.43 MB | Station Systems - No. 100 Key Equipment - Multiple Line - Tie Line and Auxiliary Signal Circuit | Iss 15D Dwg 15D; App 1D Dwg 16D
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| CD-69002-01 | | 15D | 1.80 MB | Station Systems - No. 100 Key Equipment - Telephone, Dial, and Tripping Circuit | Iss 15D Dwg 15D; App 1D Dwg 16D
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| CD-69021-01 | 1936-03-19 | 7D | 153.10 KB | Station Systems - No. 15A Key Equipment Arranged for Remote Switching | Iss 7D Dwg 7D
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| CD-69037-01 | 1936-03-20 | 7D | 174.37 KB | Station Systems - No. 23A Key Equipment Arranged for Remote Switching | Iss 7D Dwg 7D
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| CD-69091-01 | | 16D | 1.89 MB | Station Systems - Key Telephone System No. 1A - Line and Signaling Circuit | Iss 16D Dwg 16D
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| CD-69091-01 | | 17D | 6.33 MB | Station Systems - Key Telephone System No. 1A - Line and Signaling Circuit | Iss 17D Dwg 17D; App 2D Dwg 19D
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| CD-69096-01 | | 7D | 407.21 KB | Station Systems - Key Telephone System No. 1A - Key and Telephone Circuit Arranged for Pickup and Holding on One Central Office or PBX Line and Pickup on 3 Private or Intercommunicating Lines with Common Signaling Key | Iss 7D Dwg 7D
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| CD-69104-01 | | 5D | 321.26 KB | Station Systems - Key Telephone System No. 1A - Key and Telephone Circuit for Combined Turn and Push Button Key Telephone Sets | Iss 5D Dwg 5D
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| CD-69105-01 | | 3A | 3.68 MB | Station Systems - Key Telephone System No. 1A - Private Line Circuit for an Off-Premise Extension Station Arranged to Provide for Central Office Service | Iss 3A Dwg 6A; App D6A Dwg Hdbk; App 1D Dwg 7D
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| CD-69105-01 Hdbk | | 3A | 686.34 KB | Station Systems - Key Telephone System No. 1A - Private Line Circuit for an Off Premise Extension Station Arranged to Provide for Central Office Service |
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| CD-69110-01 | | 8D | 2.50 MB | Station Systems - Unattended Station Circuit for Transmitting External Audible Signals Back to a Calling Party | Iss 8D Dwg 8D
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| CD-69128-01 | | 6D | 424.79 KB | Station Systems - Key Telephone System No. 1A - Key and Telephone Circuit Arranged for Pick Up, Holding, Cut-Off and Signaling | Iss 6D Dwg 6D
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| CD-69129-01 | | 7D | 385.83 KB | Station Systems - Key Telephone System No. 1A - Key and Telephone Circuit Arranged for Pickup, Cut-Off, and Signaling | Iss 7D Dwg 7D
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| CD-69131-01 | | 3D | 1.88 MB | Station Systems - Key Equipment No. 103A | Iss 3D Dwg 4D
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| CD-69132-01 | | 4D | 330.10 KB | Station Systems - Key Telephone System No. 1A - Key and Telephone Circuit with Separately Mounted Keys Arranged for Pickup, Holding, Cut-Off and Signaling | Iss 4D Dwg 4D
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| CD-69133-01 | | 4D | 234.50 KB | Station Systems - Key Telephone System No. 1A - Key and Telephone Circuit with Separately-Mounted Keys Arranged for Pickup, Cutoff, and Signaling | Iss 4D Dwg 4D
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| CD-69136-01 | | 9B | 664.68 KB | Station Systems - Key Telephone System No. 1A - Line and Signaling Circuit with Strip Mounted Equipment | Iss 9B Dwg 13B
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| CD-69140-01 | | 3D | 162.93 KB | Station Systems - Key Telephone System No. 1A - Automatic Exclusion Circuit | Iss 3D Dwg 3D
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| CD-69155-01 | | 1 | 328.21 KB | Station Systems - Key Telephone System No. 1A - Listening-In Circuits | Iss 1 Dwg 1
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| CD-69160-01 | | 18D | 720.29 KB | Station Systems - Equipment Units | Iss 18D Dwg 18D; App 1D Dwg 19D; App 2D Dwg 20D
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| CD-69165-01 | | 2D | 248.08 KB | Station Systems - Key Telephone System No. 1A - Station Circuits Using Wiring Plan Keys and Subscriber Sets | Iss 2D Dwg 2D
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| CD-69186-01 | | 1 | 472.43 KB | Station Systems - Key Telephone System No. 1A - Lamp, Key and Telephone Circuit with Lamps in Telephone Set Arranged for Pickup and Holding on One Central Office or PBX Line and Pickup on 3 Private or Intercommunicating Links with Common Signaling Key | Iss 1 Dwg 1
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| CD-69187-01 | | 1 | 492.51 KB | Station Systems - Key Telephone System No. 1A - Lamp, Key and Telephone Circuit with Lamps in Telephone Set Arranged for Pick Up, Holding, Cut-Off and Signaling | Iss 1 Dwg 1
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| CD-69188-01 | | 1 | 407.64 KB | Station Systems - Key Telephone System No. 1A - Lamp, Key and Telephone Circuit with Lamps in Telephone Set Arranged for Pick Up, Cut-Off and Signaling | Iss 1 Dwg 1
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| CD-69196-01 | | 2D | 384.93 KB | Station Systems - Key Telephone System No. 1A - Attendant's Telephone and Key Circuit Using 101A Key Equipment Key Unit | Iss 2D Dwg 2D
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| CD-69199-01 | | 2D | 827.36 KB | [Station Systems - Intercommunicating Facilities to a Maximum of Nine Stations on a Single Subscriber's Premises Arranged so that Each Station on the Line Can Selectively Signal the Other Stations on the Line by One-Digit Dialing Codes] | Iss 2D Dwg 2D
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| CD-69204-01 | | 2D | 3.58 MB | Station Systems - Key Telephone System No. 2B for 2-Station Intercommunicating Service Arranged for a Loudspeaker and Distant Talking Transmitter at One Station | Iss 2D Dwg 2D; App 1A Dwg 3A; App 2D Dwg 4D
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| CD-69206-01 | | 1 | 510.08 KB | Station Systems - Key Telephone Systems No. 1A or 1A1 - Key and Telephone Circuit Arranged for Pick-Up, Holding, Lamps, Exclusion, Cut-Off and Signaling | Iss 1 Dwg 1
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| CD-69207-01 | | 1 | 339.69 KB | Station Systems - Key Telephone Systems No. 1A or 1A1 - Key and Telephone Circuit Arranged for Pickup, Holding, Cutoff and Signaling | Iss 1 Dwg 1
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| CD-69211-01 | | 4D | 2.39 MB | Station Systems - Civil Air Defense Warning Systems - Station Signal Indicator and Control Station Dial Circuit | Iss 4D Dwg 4D; App 2D Dwg 6D
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| CD-69225-01 | | 1 | 777.62 KB | Station Systems - Station Circuits for Public Emergency Reporting | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-69226-01 | | 1 | 928.21 KB | Station Systems - F-50682 Telephone Set - Private Line Station Circuit - 2-Wire or 4-Wire Arranged for Loop or Simplex Ringing | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-69255-01 | | 2D | 5.67 MB | Station Systems - Speakerphone System No. 1A - Telephone and Speakerphone Circuit | Iss 2D Dwg 2D
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| CD-69286-01 | | 6D | 2.13 MB | Station Systems - Key Telephone System No. 6A - Intercommunicating Line Circuit - Two-Wire Selective Signaling | Iss 6D Dwg 6; App 1D Dwg 7D
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| CD-69360-01 | | 2D | 193.70 KB | Station Systems - Order Turret No. 4 - Attendant Key and Telephone Circuit | Iss 2D Dwg 2D
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| CD-69364-01 | | 1 | 1.26 MB | Station Systems - Control Station Circuit for Use with Central Office Group Alerting System | Iss 1 Dwg 1; App 2A Dwg 3A
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| CD-69410-01 | | 1 | 33.12 KB | Station Systems - 4-Wire Private Line Circuit Arranged for SS1 or 600/1500-Cycle Selective Signaling, 20-Cycle Signaling, Voice or DC Outgoing Signaling, or Loudspeaker Incoming Signaling | App 1D Dwg 2D
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| CD-69513-01 | | 5B | 104.04 KB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit | App 2B Dwg 11B; App 3B Dwg 12B; App 4B Dwg 13B
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| CD-69513-01 | | 6B | 1.04 MB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit | Iss 6B Dwg 15B
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| CD-69566-01 | | 1 | 709.42 KB | Station System - 4-Wire Private Line - Terminating and Station Circuit | Iss 1 Dwg 1
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| CD-69604-01 | | 1 | 152.82 KB | Station Systems - Key Telephone System No. 1A2 - Off Premises Line Circuit | Iss 1 Dwg 1
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| CD-69608-01 | | 2A1C | 118.77 KB | Station Systems - Key Telephone System No. 1A2 - Dial Intercommunicating and Miscellaneous Panels | Iss 2A1C Dwg 4A1C
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| CD-69611-01 | | 2D | 260.11 KB | Station Systems - 516A Key Service Unit (433A KTU) Interconnecting Circuit and 105A Interconnecting Unit for Use Between Bell System CO and Customer-Provided Manual Switchboard or Automatic PBX | Iss 2D Dwg 2D
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| CD-69617-01 | | 1 | 345.16 KB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit (Integrated Circuit Type) | Iss 1 Dwg 1
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| CD-69624-01 | | 2D | 232.51 KB | Station Systems - Key and Telephone Circuit for Rotary and "TOUCH-TONE" Dial 10-Button Telephone Sets - 830- and 2830-Type Telephone Sets | Iss 2D Dwg 2D
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| CD-69625-01 | | 1 | 223.22 KB | Station Systems - Key and Telephone Circuit for Rotary and "TOUCH-TONE" Dial 20-Button Telephone Set - 831 A1M and 2831 A1M Telephone Sets | Iss 1 Dwg 1
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| CD-69626-01 | | 1 | 101.94 KB | Station Systems - Interphone Radio Transfer Arrangement for Use with FAA Small Key Systems or 112 Key Equipment | Iss 1 Dwg 1
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| CD-69635-01 | | 1 | 98.56 KB | Station Systems - Key Telephone System No. 1A2 - 584D Panel Connections | Iss 1 Dwg 1
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| CD-69637-01 | | 1 | 846.99 KB | Station Systems - Key Telephone Systems No. 1A, 1A1, 1A2 and 6A - 630DA, 631DA, 2630DA, 2631DA Telephone Set Circuit - 18- and 30- Button Capacity for Use with 2-Wire Lines Arranged for Dial Pulse or "TOUCH-TONE" Calling and Handset or Speakerphone Operation | Iss 1 Dwg 1
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| CD-69639-01 | | 1 | 779.68 KB | Station Systems - Key Telephone Systems No. 1A, 1A1, 1A2 and 6A - 636CA, 637DA, 2636CA, 2637DA Telephone Set Circuit - 18- and 30- Button Capacity for Use with 2-Wire Lines Arranged for Handset or Headset Operation and Dial Pulse or "TOUCH-TONE" Calling | Iss 1 Dwg 1
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| CD-69641-01 | | 1 | 803.65 KB | Station Systems - Key Telephone System No. 1A2, 1A1, or 6A - 682AA, 2682AA, 683AA, and 2683AA Telephone Set Circuits - 18- and 30-Button Capacity | Iss 1 Dwg 1
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| CD-69651-01 | | 1 | 319.50 KB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit - 400G KTU | Iss 1 Dwg 1
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| CD-69900-01 | | 1 | 469.94 KB | Station Systems - 50A Conference Set (73A Control Unit) Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D
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| CD-69900-02 | | 2A | 520.85 KB | Station Systems - 50A1 Conference Set (73B Control Unit) Circuit | App 1D Dwg 3D
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| CD-69906-01 | | 1 | 647.46 KB | Station Systems - Key Telephone System No. 1A2 - "TOUCH-TONE" Adapter Circuit - Type D4 | Iss 1 Dwg 1; App 1D Dwg 2D; App 2B Dwg 3B; App 3D Dwg 4D
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| CD-6C332-02 | | 1 | 356.55 KB | Common Systems - 3B Battery Charger Circuit | Iss 1 Dwg 1; App 1A Dwg 2A
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| CD-70515-01 | | 1 | 2.18 MB | Telegraph Systems - Telegraph Test Board No. 9 - Telegraph Service Boards Nos. 2 and 9B - Toll Test Boards Nos. 5, 16 and 18B - Morse Board No. 4 - Interconnection Circuit for Carrier Telegraph Between VF Telegraph Line Bd. And Voice Frequency Facility | Iss 1 Dwg 1; App 1AR Dwg 2AR; App 2AR Dwg 3AR; App 3AR Dwg 4AR; App 4D Dwg 5D
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| CD-73094-01 | | 2D | 2.31 MB | Data Systems - Station - Data Test Set No. 911NA | Iss 2D Dwg 2D; App 1A Dwg 3A; App 2B Dwg 4B
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| CD-73112-01 | | 1 | 278.25 KB | Data Systems - Station - EIA Test Adapter No. 911P for Use with RS-232A, B, or C Interface Connectors | Iss 1 Dwg 1
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| CD-7C007-01 | | 3B | 970.57 KB | Common Systems - Metallic Facility Terminal - Power Distribution Circuit for Use with Metallic Facility Terminal Bays | Iss 3B Dwg 6B; App 1A Dwg 7A
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| CD-7C011-01 | | 2A | 1.48 MB | Common Systems - Signaling - Tone Supply and Transfer - Fuse and Alarm - Power Converter - Carrier Group Alarm Circuit for Use with FU( ) & Auxiliary Signaling Units | Iss 2A Dwg 4A
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| CD-7C012-01 | | 2A | 890.82 KB | Common Systems - Signaling - FU( ) Plus Auxiliary Signaling Circuit for Use with Type F Signaling | Iss 2A Dwg 4A; App 1B Dwg 5B
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| CD-7C018-01 | | 4B | 1.73 MB | Common Systems - Metallic Facility Terminal - Bay Wiring | Iss 4B Dwg 9B; App 1D Dwg 10D
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| CD-80606-02 | | 1 | 4.48 MB | Power Systems - Regulated Tube Rectifier Ckt. - Magnitude Control - 115/230 Volts, 60 Cycles A-C - 50 Volts 8 Amps. Cont., 10 Amps. Intr. D-C - Panel Mounted - J86207J | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4B Dwg 5B; App 5D Dwg 6D; App 6D Dwg 7D; App 7D Dwg 8D; App 8D Dwg 9D; App 9D Dwg 10D
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| CD-80620-01 | | 2AR | 2.43 MB | Power Systems - Rectifier Circuit - Regulated - Phase Shift Control - 190-250V, 50-60 Cycles AC - Electron Tube Type 132-152V, 8 Amp DC - Semiconductor Type 132-152V, 9 Amp DC - J86207C | Iss 2AR Dwg 16AR; App 1B Dwg 17B
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| CD-80720-02 | | 5D | 2.00 MB | Power Systems - 100 Type Plants - Discharge Circuit - 10-240 Ampere 44-50 Volt - 110A Plants | Iss 5D Dwg 22D; App 1AR Dwg 23AR; App 2D Dwg 24D; App 3D Dwg 25D; App 4D Dwg 26D; App 5D Dwg 27D
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| CD-80722-02 | | 4D | 3.57 MB | Power Systems - 100 & 700 Type Plants - Charge Circuit Using Regulated Rectifiers - 10-400 Ampere 44-50 Volt - 110A & 704C Plants | Iss 4D Dwg 16D; App 1D Dwg 17D; App 2D Dwg 18D; App 3D Dwg 19D
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| CD-80728-01 | | 1 | 2.22 MB | Power Systems - 300 Type Plants - Battery Distributing Circuit - Grouping of Frames and Racks - Decentralized Power Filters - Step by Step System | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D; App 6D Dwg 7D; App 7D Dwg 8D; App 8D Dwg 9D; App 9D Dwg 10D
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| CD-80929-01 | | 8B | 1.11 MB | Power Systems - 500 Type Plants - Power Supply Circuit - 50VA, 0.25, 0.5, 0.75, and 1.5 kVA - 20 or 22 Volt A-C Supply - 506A Plant | Iss 8B Dwg 11B; App 1AC Dwg I12AC; App 2AC Dwg 13AC
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| CD-80942-01 | | 3D | 2.26 MB | Power Systems - 400 Type Plants - Discharge Circuit - 1-25 Ampere Pos. and Neg. 130V. - Automatic Power Plant - 410A Plant | Iss 3D Dwg 11D; App 1B Dwg 12B; App 2D Dwg 13D; App 3D Dwg 14D; App 4D Dwg 15D; App 5D Dwg 16D; App 6D Dwg 17D
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| CD-80943-01 | | 3D | 2.45 MB | Power Systems - Charge Circuit - 130 Volts 1-25 Ampere - 410A Plants | Iss 3D Dwg 13D; App 1D Dwg 14D; App 2B Dwg 15B; App 3B Dwg 16B; App 4 Dwg 17; App 5D Dwg 18D; App 6D Dwg 19D
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| CD-81126-01 | | 2D | 1.56 MB | Power Systems - Control Circuit - Frame and Aisle Lighting - Incandescent Type and Appliance Outlets | Iss 2D Dwg 2D; App 1D Dwg 3D; App 2D Dwg 4D; App 3D Dwg 5D; App 4B Dwg 6B
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| CD-81132-01 | | 3D | 566.83 KB | Power Systems - 800 Type Plants - Ringing Circuit - Superimposing and Tripping Batteries - 806E & 806F Ringing Power Plants | Iss 3D Dwg 4D
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| CD-81134-01 | | 4B | 2.23 MB | Power Systems - 100 Type Plants - Charge and Discharge Circuit - 10, 20, & 30 Amperes - 48 Volts - 105D Plants | Iss 4B Dwg 7B; App 1D Dwg 8D; App 2D Dwg 9D; App 3D Dwg 10D
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| CD-81138-01 | | 2A | 1.69 MB | Power Systems - Rectifier Circuit - Electron Tube Type - Automatic Regulation - 48 Volts, 8 Amperes DC - J86251A | Iss 2A Dwg 3A; App 1A Dwg 4A; App 2B Dwg 5B; App 3B Dwg 6B; App 4D Dwg 7D
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| CD-81171-01 | | 1 | 124.41 KB | Power Systems - 800 Type Plants - Signaling Circuit - Howler Interrupter - KS-15547 Machine - J86726E | Iss 1 Dwg 1; App 1D Dwg 2D; App 2B Dwg 3B
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| CD-81180-01 | | 2A | 2.75 MB | Power Systems - Rectifier Circuit - Metallic Type - Automatic Regulation - 48 Volts - 30 Amperes - J86263A | Iss 2A Dwg 2A; App 10A Dwg 12A; App 11D Dwg 13D; App 1B Dwg 3B; App 2B Dwg 4B; App 3B Dwg 5B; App 4D Dwg 6D; App 5D Dwg 7D; App 6B Dwg 8B; App 7B Dwg 9B; App 8D Dwg 10D; App 9B Dwg 11B
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| CD-81225-01 | | 2B | 4.57 MB | Power Systems - 800 Type Plants - Ringing Circuit - AC-DC or Superimposed Ringings - SXS System No. 355A - 806F Ringing Power Plant | Iss 2B Dwg 9B; App 1D Dwg 10D
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| CD-81288-01 | | 1 | 68.83 KB | Power Systems - Ringing Circuit - Interrupter Equipment - 756A PBX - J86464C | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-81318-01 | | 7D | 116.95 KB | Power Systems - Rectifier Circuit - Semiconductor Type - Automatic Regulation - 48 Volts 7.5 Amperes - J86281A | Iss 7D Dwg 13D
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| CD-81325-01 | | 2B | 120.30 KB | Power Systems - Ringing Circuit - Ringing & Tone Supply - 756A PBX - J86464D | Iss 2B Dwg 3B; App 1D Dwg 4D; App 2D Dwg 5D
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| CD-81326-01 | | 6D | 79.60 KB | Power Systems - Power Supply Circuit for 756A PBX - J86464 | Iss 6D Dwg 11D
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| CD-81326-02 | | 2D | 885.34 KB | Power Systems - Power Supply Circuit for 756A PBX with Battery Reserve - J86464 | Iss 2D Dwg 5D; App 1B Dwg 6B; App 2D Dwg 7D; App 3D Dwg 8D
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| CD-81328-01 | | 5D | 436.59 KB | Power Systems - Signaling Circuit - Transistor Low Tone Supply - 756A PBX - J86464G | Iss 5D Dwg 5D; App 1D Dwg 6D
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| CD-81329-01 | | 6B | 225.28 KB | Power Systems - Ringing Circuit - Transistor 20∼ Supply - 756A PBX - J86464H | Iss 6B Dwg 6B
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| CD-81329-01 | | 7D | 590.89 KB | Power Systems - Ringing Circuit - Transistor 20∼ Supply - 756A PBX & 800A PBX - J86464H | Iss 7D Dwg 7D; App 1D Dwg 8D
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| CD-81330-01 | | 3D | 154.75 KB | Power Systems - Supply Circuit - Transistor 60∼ Supply - 756A PBX - J86464J | Iss 3D Dwg 3D
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| CD-81331-01 | | 5B | 289.65 KB | Power Systems - Ringing Circuit - Transistor Transfer and Alarm for 20 and 60 Cycle Supplies - 756A PBX - J86464F | Iss 5B Dwg 5B
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| CD-81337-01 | | 2D | 1.24 MB | Power Systems - Ringing Circuit - AC-DC Ringing - 701B, 711B & 740E PBX - 806G Ringing Power Plant - J86472 | Iss 2D Dwg 8D; App 1D Dwg 9D; App 2D Dwg 10D
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| CD-81396-01 | | 3A | 1.07 MB | Power Systems - Rectifier Circuit - Semi Conductor Type - Automatic Regulation - 48 & 24 Volt, 30 Amperes - J86231A | Iss 3A Dwg 4A; App 1B Dwg 5B; App 2B Dwg 6B
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| CD-81504-01 | | 4B | 899.10 KB | Power Systems - Power Supply Circuit - DC to DC Transistor Converter - ±120 Volt or ±130 Volt Output - -48 Volt Input - 610B Plant | Iss 4B Dwg 15B; App 1B Dwg 16B; App 2B Dwg 17B; App 3AC Dwg 18AC
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| CD-81540-01 | | 6B | 1.18 MB | Power Systems - Regulated Rectifier - Semiconductor Type - 48 Volts 11 Amperes DC - 115/230 Volts 60 Cycles AC - J87211A | Iss 6B Dwg 13B; App 1AR Dwg 14AR; App 2AC Dwg 15AC; App 3D Dwg 16D; App 4D Dwg 17D; App 5B Dwg 18B
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| CD-81541-01 | | 3AC | 976.00 KB | Power Systems - Regulator Control Circuit - Semiconductor Type - J87214A | Iss 3AC Dwg 5AC; App 1D Dwg 6D; App 2B Dwg 7B
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| CD-81577-01 | | 3D | 141.68 KB | Power Systems - Power Supply Circuit - AC, DC & Ringing Supply for Switching System 400 - J86812A & B | Iss 3D Dwg 3D; App 1D Dwg 4D; App 2B Dwg 5B
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| CD-81577-01 | | 5B | 1.07 MB | Power Systems - Power Supply Circuit - AC, DC & Ringing Supply - J86812A & B | Iss 5B Dwg 7B; App 1D Dwg 8D; App 2B Dwg 9B; App 3D Dwg 10D; App 4D Dwg 11D; App 5D Dwg 12D; App 6D Dwg 13D
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| CD-81581-01 | | 3D | 417.08 KB | Power Systems - Slide No. 1 Power Supply for 757A PBX - J86808B | Iss 3D Dwg 9D; App 1B Dwg 10B
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| CD-81581-01 | | 5B | 1.37 MB | Power Systems - Slide No. 1 Power Supply for 757A PBX - J86808B | Iss 5B Dwg 17B; App 1D Dwg 18D; App 2D Dwg 19D; App 3B Dwg 20B; App 4D Dwg 21D; App 5D Dwg 22D
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| CD-81591-01 | | 3AR | 1.61 MB | Power Systems - 100 Type Plants - Charge and Discharge Circuit - Positive or Negative 48 Volts, 30 Ampere - 105E Power Plant | Iss 3AR Dwg 8AR; App 1AR Dwg 9AR; App 2B Dwg 10B
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| CD-81600-01 | | 4D | 77.95 KB | Power Systems - Power Supply Circuit - AC, DC & Ringing Supply for 756A Batteryless PBX - J86464L | Iss 4D Dwg 5D
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| CD-81600-01 | | 5B | 608.87 KB | Power Systems - Power Supply Circuit - AC, DC & Ringing Supply for 756A Batteryless PBX - J86464L | Iss 5B Dwg 6B; App 1B Dwg 7B; App 2D Dwg 8D; App 3D Dwg 9D
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| CD-81719-01 | | 2AR | 683.93 KB | Power Systems - Signaling Circuit - Dial Tone Generator for PBX - "TOUCH-TONE" Calling | Iss 2AR Dwg 3AR
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| CD-81719-01 | | 4A | 717.95 KB | Power Systems - Signaling Circuit - 404 (A, B, C, & D) & 405 (A, B, C & D) Dial Tone Generators for PBX - "TOUCH-TONE" Calling | Iss 4A Dwg 7A; App 1B Dwg 8B; App 2D Dwg 9D; App 3D Dwg 10D; App 4D Dwg 11D
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| CD-81837-01 | | 3D | 1.91 MB | Power Systems - Remote Test Voltage Supply Circuit - J87300 | Iss 3D Dwg 6D; App 1B Dwg 7B; App 2D Dwg 8D; App 3D Dwg 9D; App 4B Dwg 10B
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| CD-81920-01 | | 1 | 535.55 KB | Power Systems - Power Supply Circuit - -96 Volt DC Applique for 756A PBX - J86464P | Iss 1 Dwg 1; App 1B Dwg 2B; App 2D Dwg 3D
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| CD-82447-01 | | 1 | 170.42 KB | Power Systems - Charge and Discharge Circuit - 48 Volts, 600 Amps - 100 Type Plants - 151C Power Plant | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-82588-01 | | 1 | 508.60 KB | Power Systems - "LINEAGE" 2000 Controller for 24 Volt or 48 Volt Power Plant - J85501A | Iss 1 Dwg 1; App 2A Dwg 3A; App 3AC Dwg 4AC; App 4A Dwg 5A; App 5B Dwg 6B; App 6M Dwg 7M; App 7B Dwg 8B; App 8M Dwg 9M; App 9A Dwg 10A
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| CD-82588-02 | | 1 | 25.01 KB | Power Systems - "LINEAGE" 2000 MCS/CCS Controller for 24 Volt or 48 Volt Power Plant - J85501A-2 / J85501A-3 | App 1B Dwg 2B
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| CD-82603-01 | | 2B | 535.23 KB | Power Systems - "LINEAGE" 2000 Charge and Discharge Circuit - 24 or 48 Volts 6400 Amperes Maximum - J85500 | Iss 2B Dwg 4B; App 1A Dwg 5A; App 2B Dwg 6B; App 3M Dwg 7M
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| CD-82604-01 | | 1 | 660.20 KB | Power Systems - "LINEAGE" 2000 Rectifier Circuit - Input: 208 or 240 Volts 60 Hz - Output: 24 Volts or 48 Volts 25 or 50 Amperes - J85502A&B | Iss 1 Dwg 1; App 1B Dwg 2B; App 2A Dwg 3A; App 3M Dwg 4M; App 4M Dwg 5M; App 6M Dwg 7M; App 7M Dwg 8M
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| CD-82605-01 | | 1 | 797.59 KB | Power Systems - "LINEAGE" 2000 Rectifier Circuit - 208/240/480 Volt, 60 Hz, 3 Phase Input - 24 or 48 Volt, 100 or 200 Ampere Output - J85503A&B | Iss 1 Dwg 1; App 1A Dwg 2A; App 2B Dwg 3B; App 3A Dwg 4A; App 4M Dwg 5M; App 5M Dwg 6M; App 6M Dwg 7M; App 7A Dwg 8A
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| CD-82619-01 | | 2B | 440.67 KB | Power Systems - DC Power - Distributing Frame - J86334D | Iss 2B Dwg 2B
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| CD-82646-01 | | 1 | 280.17 KB | "LINEAGE" XCS Controller - J85501B | Iss 1 Dwg 1; App 1B Dwg 2B
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| CD-82649-01 | | 1 | 311.38 KB | Power Systems - "LINEAGE" 2000 Charge and Discharge Ckt - 24 or 48 Volts 600 Amperes Maximum - J85500C | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3B Dwg 4B
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| CD-82659-01 | | 2A | 375.15 KB | Power Systems - "LINEAGE" 2000 Rectifier Circuit - Input: 208 or 240 Volts, 60 Hz - Output: 24 Volts or 48 Volts 125 Amperes - J85502C | Iss 2A Dwg 2A
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| CD-83102-01 | | 2AC | 598.09 KB | Power Systems - Rectifier Circuit - 208/240 or 480 Volt, 60 Hz Input - 48 Volt, 400 Ampere Output - J85503C | Iss 2AC Dwg 2AC; App 1B Dwg 3B; App 2A Dwg 4A; App 3B Dwg 5B; App 4M Dwg 6M; App 5A Dwg 7A
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| CD-83104-01 | | 1 | 556.00 KB | Power Systems - "LINEAGE" 2000 Charge and Discharge Circuit - 24 or 48 Volts, 400 Amperes Maximum | Iss 1 Dwg 1; App 1B Dwg 2B; App 2B Dwg 3B; App 3A Dwg 4A; App 4B Dwg 5B; App 5B Dwg 6B
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| CD-8G000-01 | | 1 | 27.86 KB | 5ESS Switching Equipment - Access Interface Unit (AIU) | Iss 1 Dwg 1
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| CD-90122-01 | | 8D | 1.21 MB | Common Systems - Test Terminal Circuit for Battery and Ground for Toll, Manual, Panel, Step-by-Step, Crossbar or Telegraph Systems | Iss 8D Dwg 9D; App 1D Dwg 10D; App 2D Dwg 11D; App 3D Dwg 12D; App 4D Dwg 13D; App 5D Dwg 14D; App 6D Dwg 15D
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| CD-90469-02 | | 13D | 12.64 MB | Common Systems - Trunk Test Set Circuit for Use in Step-by-Step Offices in Testing Subscriber Recording Completing Trunks, Outgoing Trunks from Selector Equipment, Coin Trunk Circuits, Line and Trunk Finders, Selectors, Connectors, and Outgoing Repeaters and Rotary Out Trunk Switches and in Toll Offices for Testing 3-Wire Subscriber Recording Completing Trunks from Step-by-Step Offices | Iss 13D Dwg 15D; App 1D Dwg 16D; App 2D Dwg 17D; App 3D Dwg 18D; App 4B Dwg 19B; App 5D Dwg 20D
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| CD-90515-01 | | 1 | 2.41 MB | Common Systems - Telephone Repeater Application Schematic - 22 Type Telephone Repeater for Use in P.B.X. or Long Subscriber Lines or Trunk Circuits | Iss 1 Dwg 1; App 1D Dwg 2D; App 2AR Dwg 3AR; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D; App 6D Dwg 7D
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| CD-90517-01 | | 4D | 968.38 KB | Common Systems - Line and Balancing - Compromise and Balancing Networks for Use with Exchange Area Circuits or Attendants Telephone Sets | Iss 4D Dwg 15D; App 1D Dwg 16D
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| CD-95000-01 | | 6D | 1.86 MB | Common Systems - Transmission Measuring - Milliwatt Distributing Ckt with 2A Sending Panel | Iss 6D Dwg 22D; App 1D Dwg 23D; App 2D Dwg 24D; App 3B Dwg 25B; App 4D Dwg 26D
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| CD-95000-02 | | 1 | 1.26 MB | Common Systems - Transmission Measuring - Milliwatt Distributing Ckt Using 2A Sending Panel | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-95015-01 | | 3D | 1.15 MB | Common Systems - Line and Balancing - Repeating Coil and Compromise Network Ckt. For Use with Trunk and Long Line Circuits | Iss 3D Dwg 8D; App 1D Dwg 9D; App 2D Dwg 10D
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| CD-95032-01 | | 6D | 1.23 MB | Common Systems - Composite Signaling Circuit Type B with Type D CX Set and Reating Coils Arranged for Phantom Group or Single Physical 2 Way Signaling 2 Way Dialing Over Short Haul Cable and Open Wire Non-Repeatered Circuits | Iss 6D Dwg 13D
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| CD-95072-01 | | 14D | 2.57 MB | Common Systems - Distribution Fuse, Common Aisle and Miscellaneous Individual Alarm Circuit with 24V Battery Supply | Iss 14D Dwg 20D
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| CD-95102-02 | | 2B | 1007.67 KB | Common Systems - Transmission Measuring - 1W Noise Amplifier Rectifier Ckt. For Measuring Noise on Transmission Circuits on a Message Weighting Basis | Iss 2B Dwg 5B; App 1B Dwg 6B; App 2B Dwg 7B; App 3B Dwg 8B; App 4B Dwg 9B; App 5B Dwg 10B
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| CD-95113-01 | | 3B | 1.54 MB | Common Systems - "V3" Telephone Repeater - Battery Supply and Connecting Ckts for One or More VF Amplifiers | Iss 3B Dwg 8B
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| CD-95118-01 | | 15B | 5.24 MB | Common Systems - "N", "O" & "ON" Carrier Telephone - N1, O1, ON1 & ON2 Channel Ckt | Iss 15B Dwg 27B; App 1B Dwg 28B; App 2B Dwg 29B
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| CD-95121-01 | | 8D | 3.62 MB | Common Systems - "N1" Carrier Telephone - Application Schematic for Terminal | Iss 8D Dwg 19D; App 1B Dwg 20B; App 2B Dwg 21B; App 3B Dwg 22B; App 4B Dwg 23B
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| CD-95124-01 | | 8B | 445.41 KB | Common Systems - "N1" & "ON" Carrier Telephone - Application Schematic for "N1", "ON1" & "ON2" Repeater | Iss 8B Dwg 23B; App 1B Dwg 24B
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| CD-95129-01 | | 4D | 2.54 MB | Common Systems - "N1" Carrier Telephone - Low Group Transmitting Ckt. | Iss 4D Dwg 7D; App 1B Dwg 8B; App 2D Dwg 9D; App 3B Dwg 10B
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| CD-95130-01 | | 1 | 2.44 MB | Common Systems - "N1" Carrier Telephone - High Group Receiving Ckt. | Iss 1 Dwg 1; App 1A Dwg 2A; App 2A Dwg 3A; App 3A Dwg 4A; App 4B Dwg 5B; App 5AR Dwg 6AR; App 6D Dwg 7D; App 7D Dwg 8D
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| CD-95142-01 | | 8D | 1.68 MB | Common Systems - Type N Carrier Telephone - Signaling - Order Wire and Alarms - Line Bridging, Cutoff Relay and Power Supply Arrangements | Iss 8D Dwg 19D
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| CD-95143-01 | | 5D | 2.56 MB | Common Systems - Type N Carrier Telephone - VF Alarm and Order Wire Signaling Ckt | Iss 5D Dwg 9D; App 1D Dwg 10D; App 2D Dwg 11D; App 3D Dwg 12D
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| CD-95144-01 | | 3B | 4.27 MB | Common Systems - "V3" Telephone Repeater - Line and Balancing - Application Schematic for Use with Voice Frequency and Carrier Ckts. | Iss 3B Dwg 8B
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| CD-95150-01 | | 12D | 3.21 MB | Common Systems - "O" & "ON" Carrier Telephone - Application Schematic - "O1", "ON1" & "ON2" Carrier Terminal - Also for Use with ON/K Carrier Terminal | Iss 12D Dwg 19D; App 1D Dwg 20D; App 2D Dwg 21D
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| CD-95151-01 | | 10B | 513.05 KB | Common Systems - "O" & "ON" Carrier Telephone - O1, ON1, and ON2 Twin-Channel Carrier Ckt. | Iss 10B Dwg 16B
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| CD-95152-01 | | 9B | 3.12 MB | Common Systems - "O" & "ON" Carrier Telephone - OB1, OC1, OD1, Group Receiving or Repeater Amplifier Ckt. And ON1 & ON2 Group Receiving Ckt. | Iss 9B Dwg 12B
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| CD-95153-01 | | 9D | 1.99 MB | Common Systems - "O" & "ON" Carrier Telephone - OB1, OC1, OD1, ON1 & ON2 Group Transmitting Ckt. | Iss 9D Dwg 10D; App 1D Dwg 11D; App 2B Dwg 12B
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| CD-95154-01 | | 8A | 1.38 MB | Common Systems - "O" and "ON" Carrier Telephone - "O1" Terminal Group Oscillator & "ON1" and "ON2" Group Oscillator Ckts | Iss 8A Dwg 13A; App 1D Dwg 14D
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| CD-95158-01 | | 7A | 1.01 MB | Common Systems - "O" and "ON" Carrier Telephone - O1 Repeater Oscillator & Misc. Oscillator & ON1 Misc. Oscillator Ckts. | Iss 7A Dwg 11A; App 1D Dwg 12D
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| CD-95163-01 | | 3A | 856.57 KB | Common Systems - "N1" & "O1" Carrier Telephone - Channel Test Stand Ckt. And Connecting Cord - Testing and Maintenance | Iss 3A Dwg 3A; App 1B Dwg 4B
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| CD-95178-01 | | 2D | 3.76 MB | Common Systems - "N1" Carrier Telephone - High-Low Repeater Ckt. | Iss 2D Dwg 2D; App 1D Dwg 3D; App 2B Dwg 4B
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| CD-95178-01 | | 3B | 3.67 MB | Common Systems - "N1" Carrier Telephone - High-Low Repeater Ckt | Iss 3B Dwg 5B
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| CD-95179-01 | | 2D | 3.66 MB | Common Systems - "N1" Carrier Telephone - Low-High Repeater Ckt. | Iss 2D Dwg 2D
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| CD-95198-01 | | 4B | 571.47 KB | Common Systems - "ON" Carrier Telephone - ON1 or ON2 Combining Network & Oscillator Ckt | Iss 4B Dwg 4B
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| CD-95224-01 | | 3B | 1.11 MB | Common Systems - ON1, ON2 & ON/K Carrier Telephone - Slope Network, Span Pads and Artificial Line Ckts. | Iss 3B Dwg 3B
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| CD-95259-01 | | 1 | 195.61 KB | Common Systems - KS-16617 Amplifier Circuit - Special Purpose Amplifier for Use in MDF Loudspeaker Telephone System | Iss 1 Dwg 1; App 1D Dwg 2D
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| CD-95277-01 | | 6B | 1.86 MB | Common Systems - Transmission Measuring - Milliwatt Distributing Circuit Using 71 Type Milliwatt Reference Generator | Iss 6B Dwg 11B; App 1B Dwg 12B; App 2B Dwg 13B
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| CD-95277-02 | | 3B | 2.02 MB | Common Systems - Transmission Measuring - Milliwatt Distributing Circuit Using 71F Milliwatt Reference Generator | Iss 3B Dwg 6B
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| CD-95281-01 | | 1 | 1.55 MB | Common Systems - KS-16754 Amplifier Circuit | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4B Dwg 5B; App 5B Dwg 6B; App 6D Dwg 7D
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| CD-95294-01 | | 2A | 5.79 MB | Common Systems - "N2" Carrier Telephone Compandor Ckt | Iss 2A Dwg 2A; App 10B Dwg 12B; App 11AR Dwg 13AR; App 12D Dwg 14D; App 13D Dwg 15D; App 14B Dwg 16B; App 15B Dwg 17B; App 1A Dwg 3A; App 2B Dwg 4B; App 3AC Dwg 5AC; App 4B Dwg 6B; App 5B Dwg 7B; App 6B Dwg 8B; App 7AR Dwg 9AR; App 8B Dwg 10B; App 9B Dwg 11B
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| CD-95460-01 | | 1 | 261.32 KB | Common Systems - Repeater Circuit Arranged for Operating on 48 Volt Filament Supply for Use at Terminating Office with Announcement Desk No. 1 or 1B | Iss 1 Dwg 1; App 1D Dwg 2D; App 2D Dwg 3D; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D
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| CD-95703-01 | | 2D | 255.67 KB | Common Systems - MF Keyset Circuit - Local Test Cabinet No. 3 | Iss 2D Dwg 3D; App 1D Dwg 4D; App 2B Dwg 5B; App 3D Dwg 6D; App 4D Dwg 7D
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| CD-95739-01 | | 10D | 1.74 MB | Common Systems - Line Concentrator Identifier Circuit Applied to Telephone Secretarial Service Originating End | Iss 10D Dwg 20D
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| CD-95748-01 | | 9D | 1.13 MB | Common Systems - Line Concentrator-Identifier Circuit Applied to Telephone Secretarial Service Terminating End | Iss 9D Dwg 17D; App 1B Dwg 18B
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| CD-95867-01 | | 5D | 272.18 KB | Common Systems - Multifrequency Signal Generator Circuit | Iss 5D Dwg 11D; App 1D Dwg 12D; App 2B Dwg 13B
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| CD-95890-01 | | 4D | 953.72 KB | Common Systems - Outpulser Connector Circuit - Automatic Number Identification Type B and Type C - Crossbar No. 1, Panel or Step-by-Step No. 1, 350A, 355A or 35E97 Office | Iss 4D Dwg 9D; App 1D Dwg 10D; App 2B Dwg 11B; App 3D Dwg 12D; App 4B Dwg 13B
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| CD-95956-01 | | 2B | 191.93 KB | Common Systems - Dual Channel Recevier Circuit - 700 and 1100 Cycles per Second | Iss 2B Dwg 5B; App 1D Dwg 6D; App 2D Dwg 7D; App 3D Dwg 8D
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| CD-95973-01 | | 2D | 165.51 KB | Common Systems - Subscriber Loop - Bridge Lifting Circuit | Iss 2D Dwg 2D
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| CD-96002-01 | | 2D | 844.30 KB | Common Systems - Local Test Cabinet No. 2 - Test Set Circuit - Test Battery Supply Jack Circuit for Testing Subscriber Lines and Trunks | Iss 2D Dwg 2D
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| CD-96147-01 | | 2D | 313.39 KB | Common Systems - Transmission Measuring - Sending Pad Circuit for VF Channel Tests at "N" or "O" Carrier Telephone Terminal | Iss 2D Dwg 2D
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| CD-96181-01 | | 10D | 1.50 MB | Common Systems - Local Test Cabinet No. 3 - Telephone and Test Circuit for Testing Subscriber Lines | Iss 10D Dwg 24D; App 1AC Dwg 25AC; App 2B Dwg 26B; App 3B Dwg 27B; App 4D Dwg 28D
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| CD-96190-01 | | 2D | 486.91 KB | Common Systems - "N1" Carrier Telephone - "E" Lead Grounding Ckt. For Providing "E" Lead Ground During Carrier Failure | Iss 2D Dwg 2D; App 1AR Dwg 3AR
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| CD-96221-01 | | 8D | 380.71 KB | Common Systems - Two-Way Trunk Circuit to Subscriber Line Circuit - Incoming Ringdown Outgoing Automatic or 2-Way Ringdown to Other Desks - Local Test Cabinet No. 3 - Key Cabinet No. 20 or 21 - Local Test Desk No. 14 or Local Test Desk No. 16 or Line Status Verifier CTG Test Board - Master Test Frame - ACD Test Frame - Chief Switchman's Desk - Sender Make Busy Frame - Test Supervisor's Private Desk - Repair Service Desk No. 2 - Cable Test Desk No. 3 - ESS No. 1 Master Control Center - Local Test Desk No. 15B | Iss 8D Dwg 22D
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| CD-96403-01 | | 11A | 3.03 MB | Traffic Management Systems - Dial Tone Speed Register Circuit for Use in Dial Offices | Iss 11A Dwg 30A
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| CD-96474-01 | | 6AC | 815.76 KB | Common Systems - Test Trunk Ringing Circuit | Iss 6AC Dwg 18AC; App 1B Dwg 19B; App 2B Dwg 20B
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| CD-96555-01 | | 4D | 535.43 KB | Common Systems - Dial Long Line Circuit - 10 or 20 PPS Repeating for Subscriber Lines, PBX Station Lines or PBX Manual Selected Trunks - Dial Central Office or PBX | Iss 4D Dwg 13D; App 1D Dwg 14D; App 2A Dwg 15A; App 3D Dwg 16D; App 4D Dwg 17D
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| CD-97047-01 | | 6D | 1.43 MB | Common Systems - V4 Telephone Repeater - Battery Supply and Connecting Circuits for Two or More VF Amplifiers | Iss 6D Dwg 17D
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| CD-97102-01 | | 3D | 185.81 KB | Common Systems - 15 Amp Decentralized Filter Circuit for Talking or Filament Battery Supply Arranged for Mounting from the Superstructure | Iss 3D Dwg 14D; App 1D Dwg 15D; App 2D Dwg 16D
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| CD-97753-01 | | 4D | 1.64 MB | Common Systems - 13A Announcement System Circuit for Recording and Reproducing Dial Facilities Management Announcements | Iss 4D Dwg 8D
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| CD-97798-01 | | 3B | 787.38 KB | Common Systems - 14A Announcement System Circuit | Iss 3B Dwg 8B
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| CD-98100-01 | | 7B | 3.71 MB | Common Systems - Transmission Test Line or Test Trunk Circuit - Crossbar, Manual, Panel, Step-by-Step, PBX, or Toll Offices | Iss 7B Dwg 19B; App 1A Dwg 20A; App 2D Dwg 21D; App 3A Dwg 22A
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| CD-98148-01 | | 4B | 593.97 KB | Common Systems - "TOUCH-TONE" Calling Receiving Circuit Type A3 | Iss 4B Dwg 15B; App 1D Dwg 16D; App 2B Dwg 17B; App 3D Dwg 18D
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| CD-99303-01 | | 5A | 711.39 KB | Common Systems - 400A Tone Generator Circuit | Iss 5A Dwg 12A; App 1B Dwg 13B; App 2A Dwg 14A; App 3B Dwg 15B; App 4D Dwg 16D; App 5D Dwg 17D; App 6D Dwg 18D; App 7D Dwg 19D
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| CD-99328-01 | | 4D | 308.99 KB | Common Systems - Signal Generator for Supplying Frequencies to Keysets Arranged to Pulse 2/6 and 4x4 Frequencies | Iss 4D Dwg 8D; App 1D Dwg 9D
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| CD-99331-01 | | 1 | 1.30 MB | Common Systems - 60A Control Unit Circuit | Iss 1 Dwg 1; App 1A Dwg 2A; App 2B Dwg 3B; App 3D Dwg 4D; App 4D Dwg 5D; App 5D Dwg 6D; App 6AC Dwg 7AC; App 7D Dwg 8D; App 8D Dwg 9D
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| CD-99331-01 | | 4B | 409.43 KB | Common Systems - J99329A Control Unit (60A) Circuit | Iss 4B Dwg 16B
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| BT-207017 | 1925-08-04 | 1 | 615.20 KB | Panel Machine Switching System - Coin Circuit for Incoming Trunks - To be Used in Offices Where Multiple Banks Require Break Down Protection | Iss 1 Dwg 18
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| BT-207197 | 1942-04-30 | 2 | 821.84 KB | Panel System - Starting Circuit for Use with Panel Line Finder - Battery Grounded at End | Iss 2 Dwg 26
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| CD-207389 | | 31D | 1.25 MB | Panel Systems - Final Circuit with Marginal Relay Test Circuit | Iss 31D Dwg 31D
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| BT-207867 | 1930-04-02 | 3 | 480.97 KB | Miscellaneous Tone and Interrupter Circuits - Panel System | Iss 3 Dwg 23
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| BT-207959 | 1939-05-01 | 1 | 1.19 MB | Panel System - Final Circuit with Marginal Relay Test Circuit - Arranged for Routine Testing of Subscriber Lines | Iss 1 Dwg 14; App 1 Dwg 15
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| BT-226253 | 1938-01-11 | 2 | 110.74 KB | Panel System - Emergency Alarm Circuit - Trouble Desk - Main Alarm Board or Floor Alarm Board | Iss 2 Dwg 13
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| BT-226309 | 1938-04-15 | 1 | 441.26 KB | Panel System - Selector Time Alarm | Iss 1 Dwg 17
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| BT-226349 | 1938-03-11 | 3 | 515.24 KB | Panel System - Motor Stop and Frame Busy Circuits - For Use with Main and Floor Alarm Boards | Iss 3 Dwg 21D; App 1 Dwg 22
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| BT-226378 | 1937-11-19 | 1 | 3.27 MB | Panel System - District Selector - For Coin Lines, with Message Register - If Specified, Battery Ground at End - For Panel Linefinder | Iss 1 Dwg 25; App 1 Dwg 31
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| BT-226379 | 1938-01-11 | 1 | 721.47 KB | Panel System - Line Finder Time Alarm Circuit - Panel Line Finder - Battery Grounded at One End | Iss 1 Dwg 17; App 1 Dwg 18
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| CD-226467 | | 36AC | 1.42 MB | Panel Systems - Trunk Test Cord - Trouble Desk | Iss 36AC Dwg 36AC
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| BT-226617 | 1941-10-07 | 2 | 856.01 KB | Panel Systems - 2-Party Message Line and Trip Circuit - Panel Line Finder - Battery Grounded at End | Iss 2 Dwg I19
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| BT-226886 | 1938-01-11 | 2 | 2.37 MB | Panel System - Inter-Office Incoming - From Key Indicator System - From Mechanical with 900 Ohm - 1300 Ohm Fundaments or Full Mechanical Tandem | Iss 2 Dwg I23; App 1 Dwg 24
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| BT-226909 | 1938-04-07 | 1 | 633.38 KB | Panel System - Line and Trip Circuit, Panel Line Finder - Ind. Message, Coin, and Flat Rate Lines | Iss 1 Dwg 18
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| BT-239375 | 1925-06-23 | 1 | 416.29 KB | Panel Machine Switching System - Permanent Signal Trunk Group - Overflow Meter Circuit | Iss 1 Dwg 4
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| CD-239382 | | 35D | 7.31 MB | Panel System - Automatic Test of Final Selectors | Iss 35D Dwg 35D
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| BT-239413 | 1937-12-31 | 2 | 516.80 KB | Panel Machine Switching System - Dialing Set for Subscribers District Selectors | Iss 2 Dwg 13
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