| Section
| Date
| Issue
| Size
| Title
|
| SD-15120-01 | 1953-12-04 | 14 | 1.63 MB | Manual Systems - Switchboard No. 12 - Key Sheet |
| SD-1A110-01 | 1980-07-14 | 10D | 527.60 KB | Electronic Switching Systems - Common Junctor Circuit |
| SD-1A246-01 | 1983-11-04 | 10B | 1.12 MB | Electronic Switching Systems - Common MF Receiver Circuit |
| SD-1A277-01 | 1985-04-24 | 11D | 270.00 KB | Electronic Switching Systems - Common Dial Tone Delay Alarm Circuit |
| SD-1C297-01 | 1976-07-08 | 12B | 5.61 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 |
| SD-1C297-01 | 1981-07-15 | 17AC | 11.68 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 |
| SD-1C245-01 | 1975-11-06 | 11B | 7.05 MB | Common Systems - General Purpose 4-Wire Order Circuit |
| SD-1C900-01 | 1979-02-14 | 8A | 174.98 MB | Common Systems - 3A Central Control Circuit |
| SD-1C901-01 | 1977-06-03 | 4D | 2.56 MB | Common Systems - 3ACC Control Panel Circuit |
| SD-1C902-03 | | 1 | 58.01 MB | Common Systems - Main Store Controller and Memory Circuit |
| SD-1C903-01 | 1977-08-08 | 2D | 7.56 MB | Common Systems - Main Store Memory Circuit |
| SD-1C904-01 | 1977-07-19 | 5AC | 10.51 MB | Common Systems - Tape Data Controller Circuit |
| SD-1C905-01 | 1978-12-28 | 7AC | 8.14 MB | Common Systems - Teletypewriter Controller Unit Circuit |
| SD-1C906-01 | 1977-07-01 | 5B | 2.81 MB | Common Systems - System Status Panel Circuit |
| SD-1C907-01 | 1977-06-01 | 5D | 11.78 MB | Common Systems - System Status Panel Controller Circuit |
| SD-1D243-01 | 1978-05-24 | 6B1 | 1.01 MB | Data Systems Station - Data Set 202T Type, 39A1 Data Mounting and 40B1 Data Mounting |
| SD-1D295-01 | 1986-09-02 | 6A | 1.85 MB | Data Systems Station - 63 and 64 Type Data Mountings |
| SD-1E059-01 | 1974-04-15 | 11B | 5.46 MB | PBX Systems - 51A Customer Premises System - Centrex Data Receiver and Transmitter Circuit |
| SD-1P106-01 | 1981-10-29 | 14B | 6.02 MB | Operations Support Systems - Common - Switched Maintenance Access System No. 5( ) - Local Test Ports and Distribution Circuit |
| SD-1S005-01 | 1995-07-28 | 3M | 1.18 MB | Electronic Switching Systems - AINet Service Circuit Node - DC Control Computer Version Circuit |
| SD-1S006-01 | 1995-05-12 | 2M | 315.28 KB | Electronic Switching Systems - AINet Service Control Point - DC Control Computer Version Circuit |
| SD-1S007-01 | 1997-01-20 | 2M | 554.28 KB | Electronic Switching Systems - Advanced Network Services - Service Circuit Node - Advantage Control Server Circuit |
| SD-1S008-01 | 1997-01-20 | 2M | 962.84 KB | Electronic Switching Systems - Advanced Network Services - Service Control Point - Advantage Control Server Circuit |
| SD-1S009-01 | 1997-02-21 | 2 | 394.07 KB | Advanced Network Services - Advantage Telecom Server Circuit |
| SD-1S010-01 | 1998-03-01 | 1 | 409.02 KB | Electronic Switching Systems - Advanced Network Services - Service Node and Service - Control Point Systems Circuit |
| SD-1S011-01 | 1998-10-02 | 1 | 104.31 KB | Advanced Network Services - Advantage Compact Service Node |
| SD-25760-01 | 1958-07-11 | 10 | 4.99 MB | Crossbar Systems - No. 5 - Key Sheet |
| SD-25805-01 | 1982-05-28 | 102A | 86.27 MB | Crossbar Systems - No. 5 - Master Test Frame Connector Ckt |
| SD-26042-01 | 1971-06-17 | 23D | 5.28 MB | Crossbar Systems - No. 5 - Incoming Register Circuit - Multifrequency |
| SD-26077-01 | 1971-04-06 | 17B | 971.10 KB | Crossbar Systems - No. 5 - Incoming Trunk Circuit With or Without Tandem Completing - Repeated Dialing Using By-Link Reverse Battery Supervision |
| SD-2P077-01 | 1988-03-01 | 15A | 1.94 MB | Operations Support Systems - Common - Directly Connected Test Unit Circuit |
| SD-30243-01 | 1972-10-11 | 22D | 244.87 KB | Step By Step Systems - No. 1, 350A, 355A or 35E97 - Test Connector Circuit for Use in Testing Subscriber Lines and for Use in Verification Service |
| SD-30228-01 | 1965-04-12 | 38AR | 790.69 KB | Step By Step Systems - No. 1 or 350A - Connector Circuit - Combination Toll and Local - Loop Dialing Toll Train - Selective or 1 Ring Semi-Selective Ringing |
| SD-30228-01 | 1971-04-23 | 39D | 5.14 MB | Step By Step Systems - NE-No. 1 or 350A - Connector Circuit - Combination Toll and Local - Loop Dialing Toll Train - Selective or 1 Ring Semi-Selective Ringing |
| SD-30903-01 | 1967-03-06 | 10AR | 613.36 KB | Step By Step Systems - 35-E-97 - Local Connector Circuit - One Ring - Generator Connected to Ground or to Battery |
| SD-30976-01 | 1976-09-03 | 23B | 1.07 MB | 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 Specified Levels - No. 1 or 350A - Arranged for Use as First Selector for 2 Party Message Rate Service - No. 355A or 356A - Arranged for Timed Release on Permanent Signal |
| SD-30978-01 | 1971-03-05 | 10B | 479.79 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-Selecting Ringing Arranged for 2 Digit Operation |
| SD-31250-01 | 1937-06-17 | 17 | 473.60 KB | Step By Step System - 360-A Dial Office - Key Sheet |
| SD-31337-01 | 1980-10-14 | 16D | 700.73 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 |
| SD-31359-01 | 1959-08-03 | 40 | 5.63 MB | Step By Step Systems - No. 1 Key Sheet |
| SD-31359-02 | 1965-07-26 | 5 | 2.31 MB | Step By Step Systems - No. 1 - Current Drain Data |
| SD-31364-01 | 1959-10-22 | 25 | 3.51 MB | Step By Step Systems - No. 350A and Branch Office - Key Sheet |
| SD-31592-02 | 1982-04-15 | 38A | 972.16 KB | Step By Step Systems - No. 1, 350A, 355A, 360A or 25E97 - Coin Trunk Circuit for Use Preceeding a First Selector Serving Prepayment Coin Lines Arranged for Delayed Charging |
| SD-31606-01 | 1972-04-21 | 26D | 1.94 MB | Step By Step Systems - No. 1 or 350A - 30, 60 and 120 I.P.M. Interrupter and Interrupter Alarm Circuits |
| SD-31739-01 | 1972-11-27 | 19D | 784.72 KB | Step-By-Step Systems - No. 1, 350A or 355A - Combination Connector Circuit - One Ring With or Without Reverse Battery Supervision |
| SD-31771-01 | 1979-12-15 | 16B | 3.79 MB | 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 |
| SD-31779-01 | 1980-07-15 | 28B | 1.42 MB | Step By Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 Outgoing Repeater Circuit - Battery and Ground or Loop Pulsing - Loop Supervision - Arranged for 2 Repeaters per Base and for Temporary Use to Call Indicator Office |
| SD-31780-01 | | 16 | 4.21 MB | General Description of the 355A Dial Office |
| SD-31848-01 | 1954-09-01 | 16D | 1.69 MB | Step By Step Systems - No. 1, 350A, 355A or 356A - Crossbar Systems No. 5 - Line Adapter Circuit - Multi Party for Use with Grounded Lines or Low Insulation Meltallic Lines - Pulse Correction and Relayed Ringing |
| SD-31922-01 | 1958-09-11 | 19D | 8.50 MB | Step-by-Step Systems - No. 355A or No. 356A - Line Finder Control Ckt with or without Mate Operation |
| SD-31932-01 | 1952-01-07 | 6D | 2.30 MB | Step-by-Step Systems - No. 350A or 355A - Test Line Circuit for Testing Local or Toll Train for Ringing and Continuity |
| SD-32043-01 | 1967-07-10 | 28D | 86.01 MB | Step By Step Systems - No. 1 or 350A - Switch Trouble Alarm Circuit - Selector Shelf Circuits - No. 355A Miscellaneous Alarm Circuit - Selector Shelf Circuits |
| SD-32133-01 | 1983-12-14 | 25B | 1.65 MB | Step By Step Systems - No. 1, 350A, 355A, 360A or 35-E-97 - Subscriber Line Circuit |
| SD-32202-01 | 1981-05-06 | 22D | 1.74 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 |
| SD-32320-01 | 1960-06-29 | 1 | 474.53 KB | Step By Step Systems - Intertoll Dialing Office with CAMA - Key Sheet |
| SD-33013-01 | 1972-09-22 | 10D | 1.41 MB | Step By Step Systems - No. 1, 350A, 355A, 360A or 35E96 - 200 Point Line or Trunk Finder - 3 Wire |
| SD-35004-01 | 1991-05-01 | 6D | 1.75 MB | Step By Step Systems - No. 1, 350A, 355A, 356A, 360A, 35E97 - Trunk Circuit for "911" Emergency Service |
| SD-3C292-01 | 1987-08-06 | 14M | 2.64 MB | Common Systems - 660 Communication Panel Circuit |
| SD-3F027-01 | 1990-01-23 | 7B | 563.92 KB | Signaling and Packet Switching System - Common Network Interface - Digital Facility Access Cabinet Circuit |
| SD-3H911-01 | 1982-01-28 | 3BU | 336.69 KB | Electronic Switching Systems - No. 3 Distribute Point Applique Circuit |
| SD-3T003-01 | 1992-11-30 | 3A | 1.20 MB | Common Systems - 3B20D Model 3 Processor - SCSI Growth or Conversion Unit Circuit |
| SD-3T004-01 | 1993-02-02 | 1 | 2.75 MB | Common Systems - 3B20D Model 2 & 3 Processor - Small Computer Systems Interface (SCSI) New Ship Unit Circuit |
| SD-3T011-01 | 1999-01-08 | 6B | 2.22 MB | Common Systems - 3B21D Computer - Processor Unit Circuit |
| SD-3T012-01 | 1995-10-03 | 3B | 3.09 MB | Common Systems - 3B21D Computer - Growth Unit Circuit |
| SD-3T015-01 | 1995-10-11 | 2B | 1.54 MB | Common Systems - 3B21D Computer - Computer Systems Circuit |
| SD-4A153-01 | 1996-12-18 | 2M | 17.56 KB | Electronic Switching System - 4ESS - 1B Processor Complex and Units Condensed Circuit |
| SD-4C053-01 | 1984-05-08 | 5A | 648.99 KB | Common Systems - AT&T 3B20D Models 1, 2 and 3 Computer - AC & DC Power Distribution Circuit |
| SD-4C065-01 | 1987-12-10 | 4M | 685.74 KB | Common Systems - 3B20D Models 1, 2 & 3 Processor - Port Switch Unit Circuit |
| SD-4C097-01 | 1990-07-19 | 9B | 2.58 MB | Common Systems - 3B20D Model 2 & 3 Processor - Main Store and IOP Growth Unit Circuit |
| SD-4C098-01 | 1985-03-27 | 13B | 3.06 MB | Common Systems - 3B20D Model 2 and 3 Processor - Central Processing Unit Circuit |
| SD-4C099-01 | 1991-11-05 | 14M | 3.55 MB | Common Systems - 3B20D Model 2 & 3 Processor - Main Store, IO and DFC Unit Circuit |
| SD-4C101-01 | 1992-02-28 | 11M | 2.57 MB | Common Systems - 3B20D Model 2 & 3 Processor - IO Processor Basic Unit Circuit |
| SD-4C102-01 | 1984-04-18 | 2B | 375.81 KB | Common Systems - 3B20D Model 2 Processor - Power Distribution Unit Circuit |
| SD-4C115-01 | 1986-04-17 | 7AC | 2.85 MB | Common Systems - 3B20S Model 2 Processor - IO Processor and DFC Controller Unit Circuit |
| SD-4C119-01 | 1990-11-30 | 9B | 8.33 MB | Common Systems - 3B20D Model 2 & 3 Processor - Processor Control Cabinet Circuit for 5ESS |
| SD-4C120-01 | 1984-02-29 | 2B | 236.39 KB | Common Systems - 3B20D Model 2 Processor - Tape Unit Cabinet Circuit |
| SD-4C122-01 | 1993-02-23 | 10B | 1.30 MB | Common Systems - 3B20D Model 2 & 3 Processor - Processor System Cabinet for 5ESS |
| SD-4C126-01 | 1984-09-24 | 3B | 911.35 KB | Common Systems - 3B20D Model 3 Processor - Tape/Disk Cabinet |
| SD-4C127-01 | 1994-04-11 | 15B | 2.40 MB | Common Systems - 3B20D Model 3 Computer - Computer System Circuit |
| SD-55031-01 | 1974-07-01 | 11D | 259.78 KB | Toll Systems - Toll Testboard No. 18B - Primary Test Circuit |
| SD-55032-01 | 1976-09-09 | 9D | 237.48 KB | Toll Systems - Toll Testboard No. 18B - Telephone Circuit |
| SD-55200-01 | 1941-06-10 | 3 | 476.98 KB | Toll Systems - Toll Switchboard No. 3CF - Key Sheet |
| SD-55879-01 | 1966-09-16 | 16D | 940.70 KB | Toll Systems - Switchboard No. 3C or 3CL - Toll Testboard No. 17B or 18B - Testboard No. 17E, 19A, or 21A - Test Unit No. 5A - Outgoing Trunk Circuit - MF Key Pulsing or Straightforward Reverse Battery or Wet Dry Supervision - 20 Cycle Simplex or No Ringing Start Signal With or Without Coin Control |
| SD-59070-01 | 1942-07-27 | 2 | 642.86 KB | Toll Systems - Telephone Repeater - V1 Telephone Repeater - Key Sheet |
| SD-59070-02 | 1950-05-26 | 1 | 2.66 MB | Toll Systems - Telephone Repeater - "V3" Telephone Repeater - Key Sheet |
| SD-5D001-01 | 1997-01-09 | 7M | 1.17 MB | 5ESS Switching System - Floorplan Data |
| SD-5D001-02 | 2001-01-16 | 8M | 275.36 KB | 5ESS Switching System - Floorplan Data for the 5ESS-2000 Switch Cabinet |
| SD-5D002-01 | 2000-03-17 | 13M | 356.42 KB | 5ESS & 7R/E - Current Drain Data |
| SD-5D003-01 | 1984-06-19 | 1 | 350.00 KB | 5ESS Switching Equipment - Limiting Conductor Specification |
| SD-5D004-01 | 1993-08-18 | 8B | 791.29 KB | Electronic Switching Systems - 5ESS - AC Power Distribution Circuit |
| SD-5D005-01 | 1993-08-18 | 16B | 2.50 MB | 5ESS Switching Equipment - DC Power Distribution Circuit |
| SD-5D007-01 | 1999-05-13 | 34M | 520.26 KB | 5ESS Switching Equipment - Assignment Rules |
| SD-5D008-01 | 1994-04-26 | 9B | 931.44 KB | 5ESS Switching Equipment - Office Alarm Unit Circuit |
| SD-5D011-01 | 1985-08-14 | 4D | 436.12 KB | 5ESS Switching Equipment - Data Set Application Schematic Circuit |
| SD-5D012-01 | 1984-08-16 | 4D | 451.95 KB | 5ESS Switching Equipment - Interface Module Application Schematic |
| SD-5D012-02 | 1996-08-20 | 13B | 1.41 MB | 5ESS Switching Equipment - Switching Module Application Schematic |
| SD-5D014-01 | 1986-02-11 | 6D | 579.43 KB | 5ESS Switching Equipment - Application Schematic for 5ESS System (7 Ft. Frames and Cabinets) |
| SD-5D014-02 | 1998-03-18 | 37M | 2.42 MB | 5ESS Switching Equipment - Application Schematic for 5ESS System (6 Ft. Cabinets) |
| SD-5D015-01 | 1992-09-16 | 8B | 3.74 MB | 5ESS Switching Equipment - Modular Metallic Service Unit Circuit |
| SD-5D016-01 | | 1 | 8.30 MB | 5ESS Switching Equipment - Modular Metallic Service Unit Interconnection |
| SD-5D017-01 | 1995-01-19 | 12B | 1.19 MB | 5ESS Switching Equipment - Audible and Visual Alarm Circuit |
| SD-5D019-01 | 1991-10-31 | 3B | 115.54 KB | 5ESS Switching Equipment - Fan Unit and Alarm Circuit |
| SD-5D019-02 | 1991-10-31 | 3B | 280.66 KB | 5ESS Switching Equipment - 3 Fan Unit and Alarm Circuit for 6 Foot Cabinet |
| SD-5D026-01 | 1984-04-23 | 5A | 1.81 MB | 5ESS Switching Equipment - Message Switch Control Unit Circuit |
| SD-5D035-01 | 1985-08-08 | 8B | 2.01 MB | 5ESS Switching Equipment - Digital Service Unit Circuit |
| SD-5D037-01 | 1987-07-08 | 6B | 1.18 MB | 5ESS Switching Equipment - Time Multiplexed Switch Control Unit Circuit |
| SD-5D043-01 | 1986-12-13 | 6B | 4.01 MB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Circuit |
| SD-5D044-01 | 1995-03-17 | 9M | 1.06 MB | 5ESS Switching Equipment - Resistor Panel Circuit |
| SD-5D045-01 | 1986-10-14 | 12D | 6.31 MB | 5ESS Switching Equipment - Time Slot Interchanger Unit Model 2 Circuit |
| SD-5D048-01 | 1996-05-28 | 9B | 958.96 KB | 5ESS Switching Equipment - Memory Expansion Unit Circuit |
| SD-5D052-02 | 1987-01-29 | 4B | 3.07 MB | 5ESS Switching Equipment - Line Unit, Model 2 Circuit |
| SD-5D053-01 | 1990-06-20 | 9M | 471.36 KB | 5ESS Switching Equipment - Fuse / Filter Panel Circuit |
| SD-5D060-01 | 1997-10-09 | 14M | 3.99 MB | 5ESS Switching Equipment - Communication Module Control Unit Circuit |
| SD-5D061-01 | 1997-07-11 | 9M | 1.16 MB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Model 2 Circuit |
| SD-5D064-01 | 1987-09-17 | 3B | 1.30 MB | Electronic Switching Systems - 5ESS - Operator Services Position System - Link Adapter Unit |
| SD-5D066-01 | 1986-01-08 | 2A | 2.28 MB | 5ESS Switching Equipment - Message Switch Peripheral Unit, Model 2 |
| SD-5D070-01 | 1984-10-30 | 1 | 145.62 KB | 5ESS Switching Equipment - +48V DC Power Distribution Circuit |
| SD-5D071-01 | 1998-03-31 | 16M | 1.36 MB | 5ESS Switching Equipment - Operating Support Systems Interface Circuit |
| SD-5D074-01 | 1995-03-01 | 12B | 3.58 MB | 5ESS Switching Equipment - Packet Switch Unit Circuit |
| SD-5D075-01 | 1999-10-14 | 13B | 1010.20 KB | 5ESS Switching Equipment - Remote Clock Unit Circuit |
| SD-5D077-01 | 1997-09-26 | 5M | 4.41 MB | 5ESS Switching Equipment - Message Switch Control Unit Model 2 Circuit |
| SD-5D078-01 | 1997-09-26 | 6M | 3.00 MB | 5ESS Switching Equipment - Message Switch Peripheral Unit, Model 3 Circuit |
| SD-5D081-01 | 1991-10-31 | 4B | 155.12 KB | 5ESS Switching Equipment - 6 Fan Unit Circuit |
| SD-5D081-02 | 1991-10-31 | 2B | 156.25 KB | 5ESS Switching Equipment - 6 Fan Unit Circuit |
| SD-5D082-01 | 1992-12-31 | 7B | 1.98 MB | 5ESS Switching Equipment - Message Interface / Clock Unit, Model 2 Circuit |
| SD-5D084-01 | 1990-06-20 | 4M | 436.02 KB | 5ESS Switching Equipment - Fuse / Filter Panel 3 Circuit |
| SD-5D085-01 | 1993-09-24 | 13B | 6.93 MB | 5ESS Switching Equipment - ECL-Bus Unit (EBUS) Circuit |
| SD-5D086-01 | 1987-09-03 | 4M | 733.41 KB | 5ESS Switching Equipment - Transmission Rate Converter Unit Circuit |
| SD-5D086-02 | 1996-09-11 | 6M | 1.08 MB | 5ESS Switching Equipment - Transmission Rate Converter Unit Model 2 Circuit |
| SD-5D087-01 | 1990-06-20 | 3M | 421.35 KB | 5ESS Switching Equipment - Fuse / Filter Panel 4 Circuit |
| SD-5D089-01 | 1993-03-12 | 5B | 2.50 MB | 5ESS Switching Equipment - Integrated Services Line Unit Common Shelf Circuit |
| SD-5D090-01 | 1989-06-08 | 4B | 1.11 MB | 5ESS Switching Equipment - Integrated Services Line Unit - Drawer Circuit |
| SD-5D091-01 | 1987-05-11 | 5B | 1.90 MB | 5ESS Switching Equipment - Integrated Services Line Unit Circuit |
| SD-5D092-01 | 1998-12-23 | 14B | 414.60 KB | 5ESS Switching Equipment - Digital Service Unit, Model 2 Circuit |
| SD-5D094-01 | 1996-05-20 | 26B | 2.91 MB | 5ESS Switching Equipment - Module Controller and Time Slot Interchange Unit Circuit |
| SD-5D099-01 | 1994-12-02 | 5M | 213.99 KB | 5ESS Switching Equipment - Test Access Unit Circuit |
| SD-5D101-01 | 1985-03-01 | 1 | 155.26 KB | Electronic Switching Systems - No. 3 [Probably should be No. 5] - Master Control Center and Supplementary Trunk Line Work Station Circuit |
| SD-5D102-01 | 1981-07-13 | 1 | 4.99 MB | Electronic Switching Systems - No. 5 - Line Trunk Frame Circuit |
| SD-5D114-01 | 1994-01-05 | 3M | 232.29 KB | 5ESS Switching Equipment - Master Control Center / Trunk Line Work Station (6 Ft. 20 In. Depth) Circuit |
| SD-5D118-01 | 1985-08-26 | 10B | 5.19 MB | 5ESS Switching Equipment - Switching Module Control Cabinet Circuit |
| SD-5D118-03 | 1990-09-27 | 8M | 2.14 MB | 5ESS Switching Equipment - Switching Module Control Cabinet Circuit |
| SD-5D119-01 | 1986-12-10 | 5D | 1.48 MB | 5ESS Switching Equipment - Line Trunk Peripheral Cabinet (6 Ft.) Circuit |
| SD-5D119-02 | 1991-01-29 | 6B | 855.92 KB | 5ESS Switching Equipment - Line Trunk Peripheral Cabinet (6 Ft.) Circuit |
| SD-5D123-01 | 1995-06-07 | 6M | 3.35 MB | 5ESS Switching Equipment - Remote Integrated Services Line Unit Cabinet Circuit |
| SD-5D129-01 | 1996-05-17 | 21B | 4.57 MB | 5ESS Switching Equipment - Switching Module Processor Unit, Model 2 Circuit |
| SD-5D130-01 | 1994-12-16 | 33B | 3.72 MB | 5ESS Switching Equipment - Miscellaneous Cabinet (6 Ft.) Circuit |
| SD-5D132-01 | 1984-10-23 | 1 | 431.95 KB | 5ESS Switching Equipment - 5A RSM Application Schematic |
| SD-5D133-01 | 1996-09-03 | 6M | 933.84 KB | 5ESS Switching Equipment - Remote Applications Schematic Circuit |
| SD-5D135-01 | 1999-01-08 | 17B | 525.98 KB | Electronic Switching Systems - 5ESS - Operator Services Positions System Application Schematic |
| SD-5D136-01 | 1993-05-07 | 8B | 2.06 MB | 5ESS Switching Equipment - Message Switch Peripheral Unit Circuit |
| SD-5D137-01 | 1995-11-20 | 6B | 1.52 MB | Electronic Switching Systems - 5ESS - Automatic Call Distributor / Management Information System Application Schematic |
| SD-5D139-01 | 1985-02-27 | 2D | 241.81 KB | 5ESS Switching Equipment - Intercabinet Communications Circuit |
| SD-5D140-01 | 1993-12-06 | 17M | 5.92 MB | 5ESS Switching Equipment - Communications Module, Model 2 Circuit |
| SD-5D142-01 | 1986-12-17 | 2B | 240.30 KB | 5ESS Switching Equipment - Supplementary Trunk Line Work Station (6 Ft. x 20 In. Depth) Circuit |
| SD-5D144-01 | 2001-07-18 | 15M | 3.50 MB | 5ESS Switching Equipment - Communication Module, Model 2 Circuit |
| SD-5D144-02 | 1988-07-01 | 5A | 15.10 MB | 5ESS Switching Equipment - Communication Module, Model 2 Double Dual Fabric Circuit |
| SD-5D145-01 | 1988-07-22 | 2M | 385.39 KB | Electronic Switching System - 5ESS - Operator Services Position System - Power Distribution Cabinet |
| SD-5D146-01 | 1987-09-09 | 6M | 7.87 MB | 5ESS Switching Equipment - Message Switch Cabinet Circuit |
| SD-5D147-01 | 1987-08-03 | 5B | 1.79 MB | 5ESS Switching Equipment - Time Multiplexed Switch Cabinet Circuit |
| SD-5D148-01 | 1997-09-25 | 6B | 98.24 KB | 5ESS Switching Equipment - Alarm & Status Unit Model 2 Circuit |
| SD-5D149-01 | 1994-02-18 | 3M | 110.25 KB | Electronic Switching Systems - 5ESS Switch - Message Detail Records - Translator Application Processor Application Schematic |
| SD-5D151-01 | 1996-04-11 | 20B | 9.84 MB | 5ESS Switching Equipment - Interchanger Unit, Model 2 - Interchange Unit, Model 2 Circuit |
| SD-5D160-01 | 1999-12-10 | 10B | 5.52 MB | 5ESS Switching Equipment - Switching Module Control Cabinet Model 2 Circuit |
| SD-5D162-01 | 1991-09-06 | 1 | 151.35 KB | 5ESS Switching Equipment - 6 Fan Exhaust Unit Circuit |
| SD-5D168-01 | 1992-05-18 | 3B | 381.62 KB | 5ESS Switching Equipment - 6 Fan Bi-Directional Unit Circuit |
| SD-5D168-02 | 1996-12-10 | 6M | 373.75 KB | 5ESS Switching Equipment - 6 Fan Bi-Directional Unit Circuit |
| SD-5D171-01 | 1999-02-05 | 10B | 48.52 KB | Electronic Switching Systems - 5ESS - 3A Simplified Message System - Interface Translator Application Processor Application Schematic |
| SD-5D178-01 | 1997-10-03 | 5M | 3.87 MB | Electronic Switching Systems - 5ESS - Communication Module Processor Unit Circuit |
| SD-5D180-01 | 1988-04-08 | 3M | 3.21 MB | 5ESS Switching Equipment - Line Unit, Model 3 Circuit |
| SD-5D190-01 | 1993-04-26 | 1 | 1.08 MB | 5ESS Switching Equipment - Modular Fuse Filter Unit Circuit |
| SD-5D191-01 | 1997-07-15 | 4M | 2.79 MB | 5ESS Switching Equipment - Time Multiplexed Switch Unit Model 3 Circuit |
| SD-5D192-01 | 1991-03-18 | 1 | 5.89 MB | 5ESS Switching Equipment - Integrated Services Line Unit 2 Circuit |
| SD-5D194-01 | 1993-07-14 | 1 | 402.84 KB | 5ESS Switching Equipment - Fuse / Filter Unit Model 5 Circuit |
| SD-5D195-01 | 1995-03-07 | 4B | 6.96 MB | 5ESS Switching Systems - Switch Module Processor Model 4 (SMPU4) Circuit |
| SD-5D196-01 | 1999-12-29 | 6B | 29.55 MB | [5ESS Switching System] - Time Slot Interchange Unit Model 4 (TSIU) Circuit |
| SD-5D196-02 | 1999-12-14 | 4B | 29.16 MB | 5ESS Switching System - Time Slot Interchange Unit Model 4 (TSIU4-2) Circuit |
| SD-5D197-01 | 1999-01-07 | 3B | 611.39 KB | 5ESS Switching Systems - Digital Service Unit Model 3 Circuit |
| SD-5D201-01 | 1991-08-14 | 12B | 1.54 MB | Electronic Switching System - 5ESS Switching Equipment - Digital Line Trunk Unit Circuit |
| SD-5D202-01 | 1991-08-19 | 4B | 2.37 MB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit Circuit |
| SD-5D202-02 | 1991-08-19 | 2B | 2.48 MB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit Circuit |
| SD-5D203-01 | 1991-08-28 | 3B | 1.11 MB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit-Supplement Circuit |
| SD-5D203-02 | 1991-08-28 | 2B | 756.98 KB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Carrier Line Unit-Supplement Circuit |
| SD-5D204-01 | 1995-07-21 | 6A | 2.73 MB | 5ESS Switching Equipment - Digital Line Trunk Unit - Remote Integrated Services Line Unit Circuit |
| SD-5D205-01 | 1999-07-08 | 6B | 515.88 KB | 5ESS Switching Equipment - Digital Line Trunk Unit 2 (DLTU2) Circuit |
| SD-5D300-01 | 1990-04-19 | 9AC | 2.79 MB | Electronic Switching Systems - 5ESS - Trunk Unit Circuit |
| SD-5D301-01 | 1996-11-20 | 4AC | 2.09 MB | 5ESS Switching Equipment - IDCU Integrated Digital Carrier Unit Circuit |
| SD-5D401-01 | 1993-06-11 | 8B | 1.03 MB | 5ESS Switching Equipment - Facilities Interface Unit Model 2 Circuit |
| SD-5D401-02 | 1993-06-11 | 5B | 876.59 KB | 5ESS Switching Equipment - Facilities Interface Unit Model 3 Circuit |
| SD-5D500-01 | 1991-08-23 | 1 | 45.12 KB | Electronic Switching Equipment - 5ESS / International - Power Line Filter Unit Circuit |
| SD-5D501-01 | 1998-02-17 | 3M | 3.25 MB | 5ESS Switching Equipment - Digital Line Trunk Unit 3 (DLTU3) Circuit |
| SD-5D502-01 | 1992-01-13 | 2B | 85.38 KB | Electronic Switching Systems - 5ESS - Switching Communications Adapter Translator Application Processor Application Schematic |
| SD-5D503-01 | 1992-03-30 | 3M | 593.87 KB | 5ESS Switching Equipment - Enhanced 911 Service Adjunct (ESA) Circuit |
| SD-5D503-02 | 1995-04-19 | 11M | 827.76 KB | 5ESS Switching Equipment - Enhanced 911 Service Adjunct (ESA) Circuit (Single and Multiple Switch Applications) |
| SD-5D505-01 | 1993-08-31 | 2M | 358.64 KB | Electronic Switching Systems - 5ESS - Advanced Communication Package Version 7 Application Schematic |
| SD-5D507-01 | 1992-02-21 | 2M | 415.18 KB | 5ESS Switching Equipment - OSPS-AP Cluster Cabinet Circuit |
| SD-5D508-01 | 1997-09-26 | 4M | 3.70 MB | 5ESS Switching Equipment - Message Switch Control Unit, Model 3 Circuit |
| SD-5D511-01 | 1999-05-07 | 3B | 38.37 KB | Electronic Switching Systems - 5ESS - Micro Electronic Directory System Application Processor Application Schematic |
| SD-5D513-01 | 1997-04-18 | 6M | 2.44 MB | 5ESS Switching Systems - Communications Module Unit Circuit |
| SD-5D515-01 | 1992-07-15 | 1 | 69.83 KB | International 5ESS Switching Equipment - Mesh Earthing Building Circuit |
| SD-5D517-01 | 1993-07-15 | 1 | 1.05 MB | 5ESS Switching Equipment - Remote Line Group Unit Circuit |
| SD-5D518-01 | 1997-11-12 | 5B | 802.92 KB | 5ESS Switching Systems - Switching Module 2000 - Application Schematic |
| SD-5D519-01 | 1996-08-22 | 6M | 626.57 KB | 5ESS Switching Equipment - Application Schematic for the 5ESS-2000 Switch (Administrative Workstation and Very Compact Digital Exchange) |
| SD-5D523-01 | 1995-05-26 | 1 | 3.50 MB | 5ESS Switching Equipment - Packet Switch Unit Model 2 Circuit |
| SD-5D524-01 | 1993-07-28 | 1 | 49.66 KB | Electronic Switching Systems - 5ESS - Ovation Voice Processing System Application Schematic |
| SD-5D525-01 | 1999-03-22 | 6M | 3.01 MB | 5ESS Switching Equipment - Digital Network Unit - SONET (DNU-S) Circuit |
| SD-5D527-01 | 1993-04-30 | 1 | 49.38 KB | Electronic Switching Systems - 5ESS - Intelligent Network Application Schematic |
| SD-5D528-01 | 1999-12-08 | 3M | 11.01 MB | 5ESS Switching Systems - Extended Control / Data Unit (XCDU) Circuit |
| SD-5D530-01 | 1997-03-27 | 3M | 824.76 KB | 5ESS Switching Equipment - Combined Services Unit Circuit |
| SD-5D534-01 | 1997-11-12 | 5B | 723.30 KB | 5ESS Switching Systems - Administrative Workstation / Switching Module 2000 Application Schematic |
| SD-5D536-01 | 1999-04-22 | 6M | 8.74 MB | 5ESS Switching Equipment - Module Controller and Time Slot Interchange Unit Model 3 Circuit |
| SD-5D539-01 | 1998-04-09 | 3B | 43.11 KB | Electronic Switching Systems - 5ESS Switch - Message Detail Recording Translator JR (MDR JR) Application Schematic |
| SD-5D543-01 | 1995-09-27 | 1 | 83.03 KB | Electronic Switching Systems - 5ESS Switch - Public Safety ALI Translator (PSAT) Application Schematic |
| SD-5D544-01 | 1996-06-19 | 1 | 210.77 KB | 5ESS Switching Systems - Remote Units Outdoor (RUO) Cabinet Application Schematic |
| SD-5D545-01 | 1997-12-10 | 2A | 3.86 MB | 5ESS Switching System - Switch Module Processor Model 5 (SMPU5) Circuit |
| SD-5D546-01 | 1996-01-12 | 1 | 270.01 KB | 5ESS Switching Equipment - Platform Fan Unit Circuit |
| SD-5D552-01 | 1996-04-17 | 1 | 23.44 KB | 5ESS Switching Equipment - Single Point Power Line Filter Unit |
| SD-5D555-01 | 2000-08-09 | 3A | 1.12 MB | 5ESS Switching Systems - Transmission Rate Converter Unit Model 3 (TRCU3) Circuit |
| SD-5D556-01 | 1997-08-12 | 1 | 177.59 KB | Synchronous Transport Module Cabinet Circuit |
| SD-5D564-02 | 2000-10-24 | 1 | 219.92 KB | 5ESS Switching Systems - 7R/E Packet Local Solutions Application Schematic |
| SD-5E001-01 | 1976-12-17 | 11D | 4.58 MB | PBX Systems - Trunk Circuit to Central Office - One-Way Outgoing-Dial Selected 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 |
| SD-5E003-01 | 1965-12-27 | 2D | 262.75 KB | PBX Systems - No. 756A - Inward Restriction Circuit |
| SD-5E003-01 | 1974-02-26 | 3D | 1.61 MB | PBX Systems - No. 756A - Inward Restriction Circuit |
| SD-5E021-01 | 1969-01-15 | 6A | 671.00 KB | PBX Systems - No. 756A - Station Message Register Pulse and Surcharge Circuit |
| SD-5E021-01 | 1974-02-26 | 7D | 3.94 MB | PBX Systems - No. 756A - Station Message Register Pulse and Surcharge Circuit |
| SD-5E029-01 | 1968-09-19 | 4A | 310.17 KB | PBX Systems - No. 756A - Make Busy & Busy Display Circuit |
| SD-5E029-01 | 1974-02-26 | 6D | 2.55 MB | PBX Systems - No. 756A - Make Busy & Busy Display Circuit |
| SD-5E037-01 | 1968-01-09 | 2D | 83.37 KB | PBX Systems - Voltage Reduction Detector at Midpoint of Voltage Divider Network |
| SD-5E037-01 | 1974-02-26 | 3D | 880.79 KB | PBX Systems - Voltage Reduction Detector at Midpoint of Voltage Divider Network |
| SD-5X201-01 | 1992-09-11 | 9B | 1.89 MB | 5ESS Switching Equipment - Global Digital Service Unit - Export Circuit |
| SD-5X202-01 | 1983-12-23 | 1 | 815.49 KB | 5ESS Export - Periodic Pulse Metering Circuit |
| SD-5X203-01 | 1988-01-20 | 6B | 2.51 MB | 5ESS Switching Equipment - Analog Trunk Unit - Export Circuit |
| SD-5X204-01 | 1990-12-12 | 4B | 5.04 MB | Electronic Switching Systems - 5ESS Switching Equipment - Digital Line Trunk Unit - Export Circuit |
| SD-5X205-01 | 1992-12-08 | 3A | 3.07 MB | 5ESS Switching Equipment - Line Unit, Model 2 International Circuit |
| SD-5X213-01 | 1990-08-03 | 2M | 1.95 MB | 5ESS Switching Equipment - Echo canceler Signaling Unit Circuit |
| SD-5X214-01 | 1994-11-11 | 13B | 858.92 KB | Electronic Switching Systems - 5ESS Operator Services Position System (OSPS) International Application Schematic |
| SD-5X215-02 | 1993-05-07 | 6B | 177.59 KB | 5ESS Switching Equipment - Export Dataset Cabinet Application Schematic Circuit |
| SD-5X220-01 | 1990-11-01 | 1 | 385.61 KB | 5ESS Switching Equipment - International Modem Pooling Cabinet Application Schematic |
| SD-5X221-01 | 1993-03-23 | 4B | 3.50 MB | 5ESS Switching Equipment - Digital Conference Switching System Cabinet Circuit |
| SD-5X224-01 | 1991-07-11 | 3M | 451.30 KB | 5ESS Switching Equipment - Digital Test Access Circuit |
| SD-62404-01 | 1941-08-25 | 13 | 1.02 MB | Toll Systems - Telephone Repeater - 2 Wire - Line and Balancing - Key Sheet |
| SD-62405-01 | 1948-10-21 | 20 | 1.90 MB | Common Systems - Signaling - Line, Composite, Simplex, and Single Frequency - Key Sheet |
| SD-62440-01 | 1951-04-25 | 29 | 4.82 MB | Toll Systems - Switchboard No. 3 and Tandem Switchboard No. 3 - Key Sheet |
| SD-62723-01 | 1930-06-17 | 8D | 906.14 KB | Toll Systems - Telegraph Testboard No. 9 - Telegraph Test Circuit |
| SD-63394-03 | 1949-07-07 | 1 | 941.18 KB | Toll Systems - "K2" Carrier Telephone - Key Sheet |
| SD-63394-05 | 1949-08-03 | 1 | 853.49 KB | Toll Systems - Broadband Carrier Telephone - Carrier Supply - Key Sheet |
| SD-63394-06 | 1949-09-29 | 1 | 878.84 KB | Toll Systems - Broadband Carrier Telephone - Channel Carrier Terminal Ckts. - Key Sheet |
| SD-64724-01 | 1976-12-20 | 42D | 1.34 MB | Toll Systems - Toll Testboard No. 16, 17B or 18B - Toll Test Units No. 1A or 3A - Patching, Monitoring and Testing Jacks - Signal Testing Circuit - Cord Extension Circuit - Carrier 6W VF Channel Patch Bay |
| SD-64741-01 | 1961-12-18 | 18D | 703.84 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 a Dial Circuit and for Automatic Start of Ringing |
| SD-64800-01 | 1961-05-16 | 15 | 5.16 MB | Toll Systems - Switchboard No. 3C or 3CL - Key Sheet |
| SD-65680-01 | | 13D | 881.95 KB | PBX No. 507A or 507B - Station Line, Trunk, Connecting, Telephone Ringing, Buzzer and 2-Way Ringdown Tie Trunk Circuits |
| SD-65714-01 | 1968-12-03 | 9D | 1.58 MB | PBX Systems - No. 557A - Cord, Telephone, Dial, Auxiliary Signal, Station Line, Position Grouping, Ringing and Battery Circuits |
| SD-65718-01 | 1967-12-05 | 24D | 14.01 MB | PBX Systems - Tie Trunk Circuit [Rest of description is illegible] |
| SD-65719-01 | 1969-06-12 | 10D | 2.00 MB | 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 |
| SD-65721-01 | 1968-02-13 | 20D | 2.46 MB | PBX Systems - No. 701A, 701B, 711A, 711B, or 740E - Selector Connector Circuit - With or Without Terminal Hunting - Arranged to Hunt After Dialing of One or Two Digits - Arranged for Restricted Service |
| SD-65727-01 | 1969-04-08 | 9D | 656.07 KB | PBX Systems - No. 557A - Secretarial Line and Line Lamp - Test Circuit |
| SD-65729-01 | 1973-08-23 | 18B | 882.74 KB | PBX Systems - No. 557B - Secretarial Line and Central Office Trunk Circuits |
| SD-65731-01 | 1973-09-17 | 22B | 1.13 MB | PBX Systems - No. 557B for Telephone Answering Service - Position and Station Circuits |
| SD-65741-01 | 1968-09-03 | 38D | 6.02 MB | PBX Systems - No. 756A - Line, Link, and Marker Circuit |
| SD-65741-01 | 1975-03-20 | 53D | 81.17 MB | PBX Systems - No. 756A - Line, Link, and Marker Circuit |
| SD-65741-01 LDI | 1968-09-10 | 38A | 1.54 MB | PBX Systems - No. 756A - Line, Link, and Marker Circuit |
| SD-65742-01 | 1968-04-29 | 29B | 1.19 MB | PBX Systems - No. 756A - Dial Pulse Register Circuit |
| SD-65742-01 | 1974-02-26 | 32D | 21.27 MB | PBX Systems - No. 756A - Dial Pulse Register Circuit |
| SD-65744-01 | 1965-07-29 | 2D | 103.98 KB | PBX Systems - No. 756A - Traffic Register Circuit for Internal Traffic and Trouble Registers |
| SD-65744-01 | 1974-02-26 | 3D | 738.61 KB | PBX Systems - No. 756A - Traffic Register Circuit for Internal Traffic and Trouble Registers |
| SD-65745-01 | 1967-12-28 | 6D | 160.57 KB | PBX Systems - No. 756A - Dial Conference Circuit Arranged for a Maximum of 5 Simultaneous Connections |
| SD-65746-01 | 1968-12-17 | 43B | 5.45 MB | PBX Systems - No. 756A - PBX Cabling Diagram |
| SD-65746-01 | 1975-05-22 | 56D | 95.80 MB | PBX Systems - No. 756A - PBX Cabling Diagram |
| SD-65746-01 LDI | 1968-05-16 | 41A | 711.55 KB | PBX Systems - No. 756A - PBX Cabling Diagram |
| SD-65746-01 LDI | 1968-06-13 | 41B | 786.97 KB | PBX Systems - No. 756A - PBX Cabling Diagram |
| SD-65747-01 | 1967-04-03 | 8B | 169.24 KB | PBX Systems - No. 756A, 800A, or Switching System No. 400 - Loud Speaker Paging Trunk Circuit |
| SD-65747-01 | 1975-11-25 | 12D | 1.34 MB | PBX Systems - No. 558A System, 756A, 800A, 801A, 812A PBX or Switching System No. 400 - Loudspeaker Paging Trunk Circuit |
| SD-65750-01 | 1967-05-11 | 7D | 148.49 KB | PBX Systems - No. 756A - Junctor Circuit |
| SD-65750-01 | 1975-01-27 | 10D | 956.34 KB | PBX Systems - No. 756A - Junctor Circuit |
| SD-65752-01 | 1968-04-03 | 28B | 1.10 MB | PBX Systems - No. 756A - Two-Way Trunk Circuit to Central Office |
| SD-65752-01 | 1975-11-03 | 43D | 7.23 MB | PBX Systems - No. 756A - Two-Way Trunk Circuit to Central Office |
| SD-65752-01 LDI | 1968-09-13 | 28A | 769.14 KB | PBX Systems - No. 756A - Two-Way Trunk Circuit to Central Office |
| SD-65753-01 | 1967-05-11 | 15D | 272.25 KB | PBX Systems - No. 756A - Attendant Trunk Circuit |
| SD-65753-01 | 1974-02-26 | 21D | 1.42 MB | PBX Systems - No. 756A - Attendant Trunk Circuit |
| SD-65754-01 | 1967-05-16 | 6D | 117.69 KB | PBX Systems - No. 756A - Busy Tone Trunk Circuit |
| SD-65754-01 | 1974-02-26 | 7D | 798.58 KB | PBX Systems - No. 756A - Busy Tone Trunk Circuit |
| SD-65756-01 | 1966-09-02 | 6B | 632.06 KB | PBX Systems - No. 756A - Tie Trunk Circuit - Outgoing Manual and Dial Selected With 2 Second Ringing Signal Incoming Ringdown |
| SD-65756-01 | 1975-05-22 | 10D | 3.78 MB | PBX Systems - No. 756A - Tie Trunk Circuit - Outgoing Manual and Dial Selected With 2 Second Ringing Signal Incoming Ringdown |
| SD-65757-01 | 1967-10-19 | 13D | 1.63 MB | PBX Systems - No. 756A - Cordless Position Circuit |
| SD-65757-01 | 1975-03-05 | 17D | 23.99 MB | PBX Systems - No. 756A - Cordless Position Circuit |
| SD-65761-02 | 1976-12-13 | 5D | 2.03 MB | PBX Systems - No. 701B or 711B - Miscellaneous Alarm Circuit |
| SD-65773-01 | 1966-06-17 | 10D | 1.08 MB | PBX Systems - No. 552A, 552D, 556A, 605A, 701B, 701PK, 711B, 711PK, or 740E - Battery Cut-Off Circuit |
| SD-65775-01 | 1957-09-25 | 1 | 1.31 MB | PBX Systems - No. 701B - Key Sheet |
| SD-65812-01 | 1972-01-04 | 14B | 3.69 MB | PBX Systems - No. 701B - Incoming Trunk Circuit - Arranged to Transfer Station Calls and Route Directory Number Calls to Attendant for Use with Inward Dialing |
| SD-65812-01 | 1974-12-17 | 15AC | 5.34 MB | PBX Systems - No. 701B - Incoming Trunk Circuit - Arranged to Transfer Station Calls and Route Directory Number Calls to Attendant for Use with Inward Dialing |
| SD-65827-01 | 1972-01-06 | 7B | 1.17 MB | PBX Systems - No. 701B - Test Circuit for Testing Register Sender and Link Circuits |
| SD-65901-01 | 1966-08-05 | 18B | 3.56 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 Restrictive Service |
| SD-65910-01 | 1958-01-27 | 1 | 541.49 KB | PBX Systems - No. 756A - Key Sheet |
| SD-65910-02 | 1974-02-26 | 3D | 367.41 KB | PBX Systems - No. 756A - Current Drain Data |
| SD-65942-01 | 1967-10-23 | 7B | 506.95 KB | PBX Systems - No. 756A - Auxiliary Relay Circuit for Direct Station Selection From Stations |
| SD-65942-01 | 1974-02-26 | 8D | 2.69 MB | PBX Systems - No. 756A - Auxiliary Relay Circuit for Direct Station Selection From Stations |
| SD-66037-01 | 1963-07-29 | 23D | 347.42 KB | PBX Systems - No. 701A, 701B, 701PK, 711A, 711B, or 711PK - Test Line Circuit for Testing Connector and Selector Connector Circuits |
| SD-66073-01 | | 18D | 187.51 KB | PBX No. 701A, 701B, 711A, 711B, 740A, 740B, 740C or 740E - Test Set Circuit |
| SD-66142-01 | | 15D | 209.87 KB | P.B.X. No. 740A, 740B or 740C - Selector Connector Circuit |
| SD-66144-01 | | 32B | 298.81 KB | [Illegible] |
| SD-66151-01 | | 12D | 346.25 KB | No. 750A P.B.X. Trunk Circuit |
| SD-66159-01 | | 16D | 156.22 KB | 750A P.B.X. Line & Link Circuit |
| SD-66160-01 | | 6D | 111.20 KB | 750A P.B.X. Station Circuit |
| SD-66161-01 | | 14D | 187.56 KB | 750A P.B.X. Tone, Ringing and Alarm Circuit |
| SD-66359-01 | 1969-09-02 | 26B | 1.85 MB | PBX Systems - No. .701A, 701B, 701PK, 711A, 711B, 711PK or 740E - First Selector Circuit Arranged for Restricted Service |
| SD-66361-01 | | 3 | 26.08 KB | No. 750A P.B.X. Emergency Transfer Circuit |
| SD-66437-01 | | 4D | 232.61 KB | 750A P.B.X. Station Circuit |
| SD-66438-01 | | 7D | 95.22 KB | 750A P.B.X. Tone, Ringing, Alarm and Common Timing Circuits |
| SD-66507-01 | | 10D | 142.61 KB | No. 755A Station Circuit |
| SD-66522-01 | 1963-06-03 | 8D | 2.12 MB | PBX Systems - No. 555 or 557A - Ringdown Tie Trunk Circuit - 2 Way |
| SD-66524-01 | 1971-09-15 | 10D | 1.93 MB | PBX Systems - No. 555 or No. 557A - Automatic Tie Trunk Circuit - 2 Way Manual Selected |
| SD-66531-01 | 1963-06-03 | 6D | 1.17 MB | PBX Systems - No. 555 or 557A - Manual Conference Circuit |
| SD-66715-01 | 1965-02-22 | 17D | 1.97 MB | PBX Systems - No. 701B, 701PK, 711B or 711PK - Station Line Circuit - Individual or 2 Party Selective Ringing With or Without Restricted Service |
| SD-66717-01 | 1963-07-31 | 12D | 299.67 KB | PBX Systems - No. 701A, 701PK, or 740E - Attendant Trunk Circuit From Selector or Selector Connector Levels |
| SD-66729-01 | 1965-01-05 | 2 | 1.04 MB | PBX Systems - No. 608A - Key Sheet |
| SD-66743-01 | 1964-04-30 | 1 | 902.17 KB | PBX Systems - No. 757A - Key Sheet |
| SD-66796-01 | 1967-11-01 | 11D | 556.40 KB | PBX Systems - No. 756A - Alarm, Transfer & Test Circuit |
| SD-66796-01 | 1974-02-26 | 16D | 3.46 MB | PBX Systems - No. 756A - Alarm, Transfer & Test Circuit |
| SD-66799-01 | 1963-05-27 | 3B | 2.41 MB | PBX Systems - No. 552A, 552D, 556A, 605A, 607A, 608A, 701A, 701B, 711A, 711B, or 740E - Tie Trunk Circuit - Outgoing Manual and Dial Selected with Thru Dialing and Dial Repeating Incoming Pulse Correcting with or without E&M Leads Supervision |
| SD-66902-01 | 1968-03-01 | 7A | 1.21 MB | PBX Systems - No. 756A - Dial Conference Trunk Circuit - Station Controlled |
| SD-66902-01 | 1974-02-26 | 10D | 20.54 MB | PBX Systems - No. 756A - Dial Conference Trunk Circuit - Station Controlled |
| SD-66908-01 | 1967-04-13 | 6B | 688.56 KB | PBX Systems - No. 756A - Dial Conference Trunk Circuit - Attendant Controlled |
| SD-66908-01 | 1974-02-26 | 8D | 3.97 MB | PBX Systems - No. 756A - Dial Conference Trunk Circuit - Attendant Controlled |
| SD-66909-01 | 1968-05-10 | 4B | 858.87 KB | PBX Systems - No. 756A - Station Dial Transfer Controller Circuit |
| SD-66909-01 | 1974-03-01 | 8D | 5.20 MB | PBX Systems - No. 756A - Station Dial Transfer Controller Circuit |
| SD-66910-01 | 1967-10-24 | 4D | 542.29 KB | PBX Systems - No. 756A - Auxiliary Position Circuit for Remote Answering of Trunks and Inward Completion by Any Station |
| SD-66910-01 | 1974-02-26 | 6D | 3.33 MB | PBX Systems - No. 756A - Auxiliary Position Circuit for Remote Answering of Trunks and Inward Completion by Any Station |
| SD-66911-01 | 1967-10-20 | 6D | 254.67 KB | PBX Systems - No. 756A - Busy Verification Auxiliary Trunk Circuit |
| SD-66911-01 | 1974-02-26 | 8D | 1.49 MB | PBX Systems - No. 756A - Busy Verification Auxiliary Trunk Circuit |
| SD-66920-01 | 1967-11-01 | 15D | 1.17 MB | PBX Systems - No. 756A - Feature Cabling Diagram |
| SD-66920-01 | 1975-05-23 | 22D | 28.81 MB | PBX Systems - No. 756A - Feature Cabling Diagram |
| SD-66921-01 | 1967-04-10 | 6D | 707.79 KB | PBX Systems - No. 756A - Station Dial Transfer Trunk Circuit With Add-On Conference |
| SD-66921-01 | 1974-05-20 | 12D | 4.47 MB | PBX Systems - No. 756A - Station Dial Transfer Trunk Circuit With Add-On Conference |
| SD-68400-01 | 1955-06-28 | 3 | 2.43 MB | Toll Systems - Toll Switching System No. 4A and Associated Toll Switchboard No. 5 and Toll Test Board No. 17C - Key Sheet |
| SD-69000-01 | 1959-04-22 | 27D | 6.31 MB | Station Systems - No. 100 Key Equipment - Multiple Line - Line Auxiliary Signal Circuit - For Use With Central Office or PBX With or Without Arangement to Retire Line Signal When Line is Released at Central Office PBX Arranged for Intercommunicating Service |
| SD-69001-01 | 1959-05-06 | 16D | 5.19 MB | Station Systems - No. 100 Key Equipment - Multiple Line - Tie Line and Auxiliary Signal Circuit |
| SD-69002-01 | 1959-04-17 | 16D | 3.43 MB | Station Systems - No. 100 Key Equipment - Telephone, Dial, and Tripping Circuit |
| SD-69021-01 | 1936-03-19 | 7D | 290.60 KB | Station Systems - No. 15A Key Equipment Arranged for Remote Switching |
| SD-69037-01 | 1936-03-20 | 7D | 428.26 KB | Station Systems - No. 23A Key Equipment Arranged for Remote Switching |
| SD-69061-01 | 1959-04-09 | 12 | 1.19 MB | Station Systems - Key Equipments - Key Telephone Systems and Unattended Station - Key Sheet |
| SD-69091-01 | | 16D | 2.59 MB | Key Telephone System No. 1A - Line and Signaling Circuit |
| SD-69091-01 | 1969-10-24 | 19D | 17.24 MB | Station Systems - Key Telephone System No. 1A - Line and Signaling Circuit |
| SD-69096-01 | | 7D | 210.89 KB | Key Telephone System No. 1A - Key and Telephone Circuit Arranged for Pick Up and Holding on One Central Office or P.B.X. Line and Pick Up on 3 Private or Intercommunicating Lines With Common Signaling Key |
| SD-69104-01 | | 5D | 512.47 KB | Key Telephone System No. 1A - Key and Telephone Circuit For Combined Turn and Push Button Key Telephone Sets |
| SD-69105-01 | | 6A | 515.09 KB | Key Telephone System No. 1A - Private Line Circuit |
| SD-69105-01 | 1959-02-20 | 7D | 1.78 MB | Station Systems - Key Telephone System No. 1A - Private Line Circuit For an Off-Premise Extension Station Arranged to Provide for Central Office Service |
| SD-69110-01 | | 8DI | 2.46 MB | Station Systems [Key Telephone System No. 1A] - Unattended Station Circuit |
| SD-69128-01 | | 6D | 976.37 KB | Key Telephone System No. 1A - Key and Telephone Circuit Arranged for Pick Up, Holding, Cut-Off and Signaling |
| SD-69129-01 | | 7D | 1.33 MB | Key Telephone System No. 1A - Key and Telephone Circuit Arranged for Pick Up, Cut-Off and Signaling |
| SD-69131-01 | 1964-08-03 | 5D | 1.19 MB | Station Systems - Key Equipment No. 103A |
| SD-69132-01 | | 4D | 591.14 KB | Key Telephone System No. 1A - Key and Telephone Circuit With Separately Mounted Keys Arranged for Pick Up, Holding, Cut-Off and Signaling |
| SD-69133-01 | | 4D | 460.96 KB | Key Telephone System No. 1A - Key and Telephone Circuit With Separately Mounted Keys Arranged for Pick Up, Cut-Off and Signaling |
| SD-69136-01 | | 13B | 2.84 MB | Key Telephone System No. 1A - Line and Signaling Circuit |
| SD-69140-01 | | 3D | 132.03 KB | Key Telephone System No. 1A - Automatic Exclusion Circuit |
| SD-69155-01 | | 1 | 185.82 KB | Station Systems - Key Telephone System No. 1A - Listening-In Circuits |
| SD-69160-01 | 1964-08-28 | 20D | 5.07 MB | Station Systems - Equipment Units |
| SD-69165-01 | | 2D | 603.57 KB | Key Telephone System No. 1A - Station Circuits |
| SD-69186-01 | | 1 | 225.21 KB | Key Telephone System No. 1A - Lamp, Key and Telephone Circuit With Lamps in Telephone Set Arranged for Pick Up and Holding on One Central Office or PBX Line and Pick Up on 3 Private or Intercommunicating Lines With Common Signaling Keys |
| SD-69187-01 | | 1 | 877.23 KB | Key Telephone System No. 1A - Lamp, Key and Telephone Circuit With Lamps in Telephone Set Arranged for Pick-Up, Holding, Cut-Off and Signaling |
| SD-69188-01 | | 1 | 814.91 KB | Key Telephone System No. 1A - Lamp, Key and Telephone Circuit With Lamps in Telephone Set Arranged for Pick-Up, Cut-Off and Signaling |
| SD-69196-01 | | 2D | 818.25 KB | Key Telephone System No. 1A - Attendant's Telephone and Key Circuit Using 101A Key Equipment Key Unit |
| SD-69204-01 | 1959-04-07 | 4D | 4.05 MB | Station Systems - Key Telephone System No. 2B - For 2-Station Intercommunicating Service Arranged for a Loudspeaker and Distant Talking Transmitter at One Station |
| SD-69206-01 | | 1 | 1020.25 KB | Key Telephone System No. 1A or 1A1 - Key and Telephone Circuit Arranged for Pick-Up, Holding, Lamps, Exclusion, Cut-off and Signaling |
| SD-69207-01 | | 1 | 338.09 KB | Key Telephone System No. 1A or 1A1 - Key and Telephone Circuit With Separately Mounted Keys Arranged for Pick-up, Holding Cut-off and Signaling |
| SD-69211-01 | 1971-02-23 | 6D | 1.38 MB | Station Systems - Civil Air Defense Warning Systems - Station Signal Indicator and Control Station Dial Circuit |
| SD-69225-01 | 1959-03-09 | 2D | 352.65 KB | Station Systems - Station Circuits for Public Emergency Reporting |
| SD-69226-01 | 1959-03-10 | 1 | 569.08 KB | Station Systems - F-50682 Telephone Set - Private Line Station Circuit - 2-Wire or 4-Wire - Arranged for Loop or Simplex Ringing |
| SD-69255-01 | 1959-07-17 | 2D | 7.40 MB | Station Systems - Speakerphone System No. 1A - Telephone and Speakerphone Circuit |
| SD-69286-01 | 1967-06-01 | 7D | 2.01 MB | Station Systems - Key Telephone System No. 6A - Intercommunicating Line Circuit - Two-Wire, Selective Signaling |
| SD-69299-01 | | 2D | 1.43 MB | Key Telephone System No. 1A or 1A1 - Intercommunicating Line Circuit |
| SD-69360-01 | 1960-04-20 | 2D | 334.75 KB | Station Systems - Order Turret No. 4 - Attendant Key and Telephone Circuit |
| SD-69364-01 | 1965-03-04 | 3A | 5.24 MB | Station Systems - Control Station Circuit for Use With Central Office Group Alerting System |
| SD-69410-01 | 1962-10-25 | 2D | 1.75 MB | 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 |
| SD-69411-01 | 1961-05-15 | 4D | 573.09 KB | Station Systems - Key Telephone System No. 6A - Touch-Tone Adapter |
| SD-69431-01 | 1966-09-12 | 4D | 924.68 KB | Station Systems - Key Telephone Systems No. 1A2, 1A1, and 6A - Key and Telephone Circuit - Flush Mounted Keys |
| SD-69454-01 | 1963-06-03 | 1 | 549.75 KB | Station Systems - Key and Telephone Circuit - Arranged for Touch-Tone Calling on 2- and 4-Wire Lines - 1616-Type Telephone Sets |
| SD-69513-01 | 1973-01-11 | 15B | 793.78 KB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit |
| SD-69566-01 | 1967-03-20 | 1 | 2.39 MB | Station System - 4 Wire Private Line Terminating and Station Circuit |
| SD-69604-01 | 1975-11-26 | 1 | 193.96 KB | Station Systems - Key Telephone System No. 1A2 - Off Premises Line Circuit |
| SD-69608-01 | 1974-05-21 | 4A1C | 1.61 MB | Station Systems - Key Telephone System No. 1A2 - Dial Intercommunicating and Miscellaneous Panels |
| SD-69610-01 | 1978-05-15 | 11D | 8.71 MB | Station Systems - Switching System No. 301A Arranged for Multiple Access |
| SD-69617-01 | 1970-01-05 | 1 | 331.94 KB | Station Systems - 1A2 Key Telephone System - CO or PBX Line Circuit - Integrated Circuit Type |
| SD-69624-01 | 1978-09-14 | 2D | 831.85 KB | Station Systems - Key and Telephone Circuit for Rotary and Touch-Tone Dial - 10-Button Telephone Sets - 830- and 2830- Type Telephone Sets |
| SD-69625-01 | 1970-06-25 | 1 | 870.31 KB | Station Systems - Key and Telephone Circuit for Rotary and Touch-Tone Dial - 20-Button Telephone Sets - 831 A1M and 2831 A1M Type Telephone Sets |
| SD-69626-01 | 1970-01-05 | 1 | 133.81 KB | Station Systems - Interphone Radio Transfer Arrangement for Use with FAA Small Key Systems or 112 Key Equipment |
| SD-69635-01 | 1971-08-31 | 1 | 778.15 KB | Station Systems - Key Telephone System No. 1A2 - 584D Panel Connections |
| SD-69637-01 | 1974-08-19 | 1 | 1.91 MB | 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 |
| SD-69639-01 | 1974-08-19 | 1 | 1.57 MB | 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 |
| SD-69641-01 | 1972-11-17 | 1 | 1.96 MB | Station Systems - Key Telephone Systems No. 1A, 1A1, 1A2, or 6A - 682AA, 683AA, 2682AA, 2683AA Telephone Set Circuit - 18- and 30-Button Capacity for Use With 2- and 4-Wire Lines Arranged for Dial Pulse or Touch-Tone Calling and "A" Lead Control |
| SD-69651-01 | 1977-01-17 | 3B | 191.77 KB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit - 400G KTU |
| SD-69651-01 | 1978-06-09 | 5D | 190.91 KB | Station Systems - Key Telephone System No. 1A2 - CO or PBX Line Circuit - 400G KTU |
| SD-69900-01 | 1973-02-26 | 3D | 789.78 KB | Station Systems - 50A Conference Set (73A Control Unit) Circuit |
| SD-69900-02 | 1974-09-04 | 2A | 793.54 KB | Station Systems - 50A1 Conference Set (73B Control Unit) Circuit |
| SD-69900-02 | 1979-06-04 | 4B1 | 881.41 KB | Station Systems - 50A1 Conference Set (73B Control Unit) Circuit |
| SD-69906-01 | 1977-07-13 | 4D | 553.03 KB | Station Systems - Key Telephone System No. 1A2 - Touch-Tone Adapter Circuit - Type D4 |
| SD-69909-01 | 1979-08-21 | 8D1 | 3.45 MB | Station Systems - Speakerphone System No. 4A - Telephone and Speakerphone Circuit |
| SD-70256-01 | 1938-05-13 | 1 | 299.32 KB | Telegraph Systems - Testing and Maintenance - 163A1 Test Unit Circuit for Use with Telegraph Repeaters |
| SD-73060-01 | 1976-09-22 | 10B1 | 1.12 MB | Data Systems - Central Office and Station Data Set 108D Type |
| SD-73094-01 | 1977-01-17 | 4B | 4.51 MB | Data Systems Station - Data Test Set No. 911NA |
| SD-80223-01 | | 3D | 43.77 KB | 750A P.B.X. Charge and Discharge Circuit |
| SD-80477-01 | | 11D | 231.86 KB | Power Systems - 750A P.B.X. Plant Charge and Discharge Circuit with Relay for Charge Control |
| SD-80634-01 | 1940-12-16 | 5D | 341.04 KB | Power Systems - Discharge Circuit - Coin Control Supply Using KS-6948 or KS-8128 Dry Battery Units |
| SD-80700-01 | 1961-08-17 | 13 | 10.56 MB | Power Systems - Key Sheet - Standard Ratings |
| SD-80885-01 | | 32B | 5.60 MB | Distributing & Control Equipment - SXS Systems Nos. 1, 350A, 355A & 35E97, and 701A & 711A PBX and 701B and 711B PBX - 806D Ringing Power Plants |
| SD-80886-01 | 1973-07-25 | 24B | 3.04 MB | Power Systems - 800 Type Plants - Signaling Circuit - Tone Supply - Static Frequency Generators & Drum Interrupters - 806D Ringing Power Plants - J86596 |
| SD-81326-02 | 1967-02-10 | 4A | 199.00 KB | Power Systems - Power Supply Circuit for 756A PBX With Battery Reserve - J86464 |
| SD-81326-02 | 1975-12-17 | 8D | 1.27 MB | Power Systems - Power Supply Circuit for 756A PBX With Battery Reserve - J86464 |
| SD-81328-01 | 1959-09-30 | 5D | 97.92 KB | Power Systems - Signaling Circuit - Transistor Low Tone Supply - 756A PBX - J86464G |
| SD-81328-01 | 1975-12-17 | 6D | 659.28 KB | Power Systems - Signaling Circuit - Transistor Low Tone Supply - 756A PBX - J86464G |
| SD-81329-01 | 1960-05-23 | 6B | 101.85 KB | Power Systems - Ringing Circuit - Transistor 20∼ Supply - 756A PBX & 800A PBX - J-86464H |
| SD-81329-01 | 1975-12-16 | 8D | 753.48 KB | Power Systems - Ringing Circuit - Transistor 20∼ Supply - 756A PBX & 800A PBX - J-86464H |
| SD-81540-01 | 1968-01-11 | 16D | 121.13 KB | Power Systems - Regulated Rectifier - Semi-Conductor Type - 48 Volts, 11 Amperes DC - 115/230 Volts, 60 Cycle AC - J87211A |
| SD-81540-01 | 1968-09-23 | 18B | 632.92 KB | Power Systems - Regulated Rectifier - Semi-Conductor Type - 48 Volts, 11 Amperes DC - 115/230 Volts, 60 Cycle AC - J87211A |
| SD-81577-01 | 1968-11-25 | 10D | 132.16 KB | Power Systems - Power Supply Circuit for AC, DC & Ringing Supply - J86812A & B |
| SD-81577-01 | 1974-01-31 | 13D | 621.24 KB | Power Systems - Power Supply Circuit for AC, DC & Ringing Supply - J86812A & B |
| SD-81581-01 | 1968-09-12 | 16D | 397.23 KB | Power Systems - Slide No. 1 Power Supply for 757A PBX - J86808B |
| SD-81581-01 | 1976-01-08 | 22D | 1.95 MB | Power Systems - Slide No. 1 Power Supply for 757A PBX - J86808B |
| SD-81600-01 | 1967-01-31 | 7B | 64.96 KB | Power Systems - Power Supply Circuit - AC, DC & Ringing Supply for 756A Batteryless PBX - J86464L |
| SD-81600-01 | 1969-11-13 | 8D | 598.85 KB | Power Systems - Power Supply Circuit - AC, DC & Ringing Supply for 756A Batteryless PBX - J86464L |
| SD-81837-01 | 1973-07-25 | 10B | 3.10 MB | Power Systems - Remote Test Voltage Supply Circuit - J87300 |
| SD-81920-01 | 1967-11-14 | 2B | 66.74 KB | Power Systems - Power Supply Circuit - -96 Volt DC Applique for 756A PBX - J86464P |
| SD-81920-01 | 1976-01-08 | 3D | 1012.01 KB | Power Systems - Power Supply Circuit - -96 Volt DC Applique for 756A PBX - J86464P |
| SD-81999-01 | 1978-07-03 | 8D | 1.15 MB | Power Systems - Rectifier Circuit - Ferroresonant Type - 48 VDC 100 Amp - Automatic Regulation - KS-20493 |
| SD-82156-01 | 1978-03-22 | 9B | 5.78 MB | Power Systems - Ringing, Tone and Signaling Circuits - General Use Circuit Packs |
| SD-82161-02 | 1978-03-22 | 2B | 1.84 MB | Power Systems - DC to DC Converter - -48 Volt and +24 Volt Inputs - +3.030 Volt, 5 Ampere Output - J87389F2 |
| SD-82178-01 | 1976-05-19 | 2A | 697.78 KB | Power Systems - Inverter Circuit - 500 VA, 120 V, 60 Hz Single Phase - 42.75 - 52.5 VDC Input - KS-20816, L2 [Lorain SD-5174-310] |
| SD-82249-01 | 1978-06-22 | 2B | 1.62 MB | Power Systems - DC to DC Converter - -48 Volt and +24 Volt Inputs - +3.030 Volt, 8 Ampere Output - J87389P |
| SD-82250-01 | 1978-06-23 | 2B | 3.82 MB | Power Systems - DC to DC Converter - -48 Volt and +24 Volt Inputs - -1 to -13 Volt, 2 Ampere Output - J87389R-1 |
| SD-82255-01 | 1980-09-17 | 5B | 15.90 MB | Power Systems - Ringing, Tone & Signaling Circuits - 881A Ringing, Tone & Cadence System for No. 3 ESS Offices - Inputs: -48V DC, +48V DC - Outputs: (A): 105 V (Taps at 86V & 97V) @ 20 Hz; (B): 105V (Taps at 86V & 97V) @ 20 Hz; (C): 105V (Taps at 86V) @ 20 Hz - 43.0 VA Max. Plant Ringing Capacity - 0.1 VA Precise Tone Capacity (Each Tone) - J87824 |
| SD-82258-01 | 1976-04-27 | 2AR | 921.24 KB | Power Systems - Inverter Circuit - 20 Hz DC to AC Inverter - 86V, 0.5 Ampere - J87415 |
| SD-82303-01 | 1980-07-18 | 2B | 4.94 MB | Power Systems - Control Circuit for the Charge Discharge Circuit - 151A Power Plant |
| SD-82304-01 | 1980-08-06 | 3B | 4.26 MB | Power Systems - Charge and Discharge Circuit - 24 Cells - 151A Power Plant |
| SD-82327-01 | 1978-06-12 | 2B | 1.44 MB | Power Systems - DC to DC Converter - -48 Volt and +24 Volt Inputs - +5.000 Volt, 6 Ampere Outpit - J87421A-1 |
| SD-82340-01 | 1975-07-21 | 1 | 2.23 MB | Power Systems - DC to DC Converter - 188A/189A Power Unit - -48V Input - +24V, 8 Amp Output |
| SD-82341-01 | 1975-07-21 | 1 | 1.86 MB | Power Systems - DC to DC Converter - 184A Power Unit - -48V Input - +48V, 1.8 Amp Output |
| SD-82342-01 | 1975-07-21 | 1 | 1.88 MB | Power Systems - DC to DC Converter - 184B Power Unit - -48V Input - +130V, 0.25 Amp and -130V, 0.25 Amp Output |
| SD-82383-01 | 1978-10-04 | 3B | 2.19 MB | Power Systems - DC to DC Converter - -48 Volts, +24 Volts, +5 Volts Inputs - +12.00 Volts, 2.0 Amperes Output, -5.00 Volts, 0.05 Ampere Output - J87422B |
| SD-82401-01 | | 2B | 2.84 MB | Power Systems - Rectifier Circuit - Ferroresonant Type - 48 VDC 100 Amp - Automatic Regulation - KS-20493 [ITT-North Electric SD-439 2527] |
| SD-82447-01 | 1982-02-25 | 2B | 313.68 KB | Power Systems - Charge and Discharge Circuit - 48 Volts, 600 Amps - 100 Type Plants - 151C Power Plant |
| SD-82588-01 | 1990-04-16 | 13M | 1.06 MB | Power Systems - "LINEAGE" 2000 Controller for 24 Volt or 48 Volt Power Plant - J85501A |
| SD-82603-01 | 1997-12-16 | 17M | 1.21 MB | Power Systems - "LINEAGE" 2000 Charge and Discharge Ckt - 24 or 48 Volts 6400 Amperes Maximum - J85500A-1, A-2 |
| SD-82604-01 | 1996-03-11 | 10AC | 650.33 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 |
| SD-82605-01 | 1995-11-10 | 13M | 500.25 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 |
| SD-82619-01 | 1993-08-04 | 8B | 670.77 KB | Power Systems - DC Power Distributing Frame - J86334D |
| SD-82646-01 | 1987-05-19 | 2B | 489.64 KB | "LINEAGE" XCS Controller - J85501B |
| SD-82649-01 | 1994-03-26 | 7B | 882.60 KB | Power Systems - LINEAGE 2000 Charge and Discharge Ckt - 24 or 48 Volts, 600 Amperes Maximum - J-85500C, H589-411 |
| SD-82659-01 | 1994-08-25 | 9AC | 419.51 KB | Power Systems - "LINEAGE" 2000 Rectifier Circuit - Input: 208 or 240 Volts, 60 Hz - Output: 24 Volts or 48 Volts, 125 Amperes - J85502C |
| SD-83102-01 | 1991-04-04 | 9AC | 416.77 KB | Power Systems - Rectifier Circuit - 208/240 or 480 Volt, 60 Hz Input - 48 Volt, 400 Ampere Output - J85503C |
| SD-83104-01 | 1991-02-12 | 7B | 853.20 KB | Power Systems - "LINEAGE" 2000 Charge and Discharge Circuit - 24 or 48 Volts, 400 Amperes Maximum |
| SD-83191-01 | 1994-12-02 | 4B | 444.99 KB | Power Systems - DC Power Distributing Frame - J86334E-1 |
| SD-8G000-01 | 2001-03-29 | 2M | 7.87 MB | 5ESS Switching Equipment - Access Interface Unit (AIU) |
| SD-8G001-01 | 2001-03-19 | 1 | 13.55 MB | 5ESS Switching Equipment - Access Interface Platform Circuit (AIP) |
| SD-90250-01 | 1958-06-23 | 28 | 863.61 KB | Common Systems - Master Key Sheet |
| SD-90250-01 | 1960-10-03 | 30I | 4.05 MB | Common Systems - Master Key Sheet |
| SD-90625-01 | 1952-03-17 | 8 | 467.16 KB | Common Systems - Service Observing Desks and Service Observing Sets - Key Sheet |
| SD-95102-02 | 1980-09-17 | 10B | 2.63 MB | Common Systems - Transmission Measuring IW Noise Amplifier Rectifier Ckt. For Measuring Noise on Transmission Circuits or a Message Weighting Basis |
| SD-95162-02 | 1973-08-07 | 9B | 691.26 KB | Common Systems - Transmission Measuring - 1000 Hz Outlets, Receiving Jacks and Controls |
| SD-95259-01 | 1979-01-02 | 2D | 347.95 KB | Common Systems - KS-16617 Amplifier Circuit - Special Purpose Amplifier for Use in MDF Loudspeaker Telephone System |
| SD-95277-01 | 1972-08-07 | 14B | 2.48 MB | Common Systems - Transmission Measuring - Milliwatt Distributing Ckt Using 71 Type Milliwatt Reference Generator (71A, 71B & 71C MW Ref Gen) (71D & 71E Network Panels) |
| SD-95283-02 | 1981-10-23 | 1 | 587.42 KB | Common Systems - Announcement Circuit Employing KS-16765 List 12 Announcement Set |
| SD-95867-01 | 1978-08-08 | 13B | 896.04 KB | Common Systems - Multifrequency Signal Generator Circuit |
| SD-95956-01 | | 9BI | 943.64 KB | Common Systems - Dual Channel Receiver Circuit |
| SD-95973-01 | 1973-04-04 | 5D | 556.86 KB | Common Systems - Subscriber Loop Bridge Lifting Circuit |
| SD-96002-01 | 1940-12-03 | 3D | 193.69 KB | Common Systems - Local Test Cabinet No. 2 - Test Set Circuit - Test Battery Supply Jack Circuit for Testing Subscriber Lines and Trunks |
| SD-96172-01 | 1958-11-13 | 6 | 325.56 KB | Common Systems - Operating Room Desk No. 19 - Key Sheet |
| SD-96181-01 | 1972-06-07 | 28D | 1.82 MB | Common Systems - Local Test Cabinet No. 3 - Telephone and Test Circuit for Testing Subscriber Lines |
| SD-96555-01 | 1977-12-12 | 17D | 953.16 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 |
| SD-96608-01 | 1977-03-21 | 14A | 24.05 MB | Common Systems - Transmission Measuring - ATMS - 54 Type - Manually Controlled Interrogator System Schematic |
| SD-96619-01 | 1977-02-22 | 2AR | 35.47 MB | Common Systems - Voice Frequency Transmission - Switched Maintenance Access System No. 3A, 3B, 3C - Type 2BX Nonmetallic Manual Access Circuit |
| SD-97102-01 | 1978-03-08 | 16D | 242.89 KB | Common Systems - 15 Amp Decentralized Filter Circuit for Talking or Filament Battery Supply Arranged for Mounting from the Superstructure |
| SD-97272-01 | 1977-05-11 | 11B | 4.80 MB | Common Systems - N1 and ON Carrier Telephone - Application Schematic for Powering N1, N1A, N1-H, N2, ON1 and ON2 Repeaters |
| SD-97558-01 | 1980-05-28 | 3A | 5.97 MB | Common Systems - Far-End Test Trunk for Incoming Remote Testing From LTD |
| SD-97565-01 | 1980-02-11 | 3B | 5.67 MB | Common Systems - Talk Trunk and Line Circuit Applique - No. 16 LTD, LSV and Key Telephone Systems |
| SD-97722-02 | 1978-08-02 | 3A | 3.49 MB | Common Systems - Range Extender With Gain (Reg) - Bay Wiring and Application Schematic |
| SD-97736-01 | 1979-02-13 | 8B1 | 9.78 MB | Common Systems - KS-21447 Mini-Recorder Circuit for Recording and Reproducing Digital Data |
| SD-97753-01 | 1978-02-16 | 1 | 10.82 MB | Common Systems - 13A Announcement System - Circuit for Recording and Reproducing Dial Facilities Management Announcements |
| SD-97753-01 | 1985-03-21 | 8D | 2.61 MB | Common Systems - 13A Announcement System - Circuit for Recording and Reproducing Dial Facilities Management Announcements |
| SD-97798-01 | 1994-06-30 | 9B | 414.13 KB | Common Systems - 14A Announcement System Circuit |
| SD-97816-01 | 1993-11-19 | 1 | 66.97 KB | Common Systems - 16A Announcement System Circuit |
| SD-98091-01 | 1976-03-24 | 12D | 688.88 KB | Common Systems - Signaling - Load Transfer Circuit for Use With a Pair of 2000, 2400 or 2600-Cycle Supply Circuits |
| SD-98148-01 | 1972-04-15 | 12D | 5.92 MB | Common Systems - "TOUCH-TONE" Calling - Receiving Circuit - Type A3 |
| SD-99303-01 | 1978-05-03 | 18D | 2.45 MB | Common Systems - 400A Tone Generator Circuit |
| SD-99303-01 | 1980-05-15 | 19D | 1.29 MB | Common Systems - 400A Tone Generator Circuit |
| SD-99304-01 | 1978-08-08 | 12D | 2.24 MB | Common Systems - 5A Timer Circuit |
| SD-99308-01 | 1976-08-20 | 15AR | 6.15 MB | Common Systems - Far End Test Trunk or Line Circuit for Remote Testing From Local Test Desk |
| SD-99311-01 | 1977-02-18 | 20B | 20.24 MB | Common Systems - Remote Testing Circuit - Far End - For Step-By-Step, Crossbar No. 1, Crossbar No. 5, Panel or ESS Offices |
| SD-99316-01 | 1979-01-24 | 4D | 370.78 KB | Common Systems - KS-19328,L1 Amplifier Circuit |
| SD-99328-01 | 1975-05-28 | 10D | 421.27 KB | Common Systems - Signal Generator Circuit for Supplying Frequencies to Keysets Arranged to Pulse 2/6 and 4x4 Frequencies |
| SD-99331-01 | 1977-05-03 | 16B | 2.75 MB | Common Systems - J99329A Control Unit (60A) Circuit |
| SD-99356-01 | 1980-02-04 | 14D1 | 2.93 MB | Station Systems - Recorder Coupler Circuit - KS-19522 Recorder Couplers |
| SD-99360-01 | 1979-01-24 | 9D | 721.29 KB | Common Systems - KS-19739,L1 Amplifier Circuit |
| SD-99392-01 | 1980-05-19 | 4A | 43.72 MB | Common Systems - Transmission Measuring Mini-ROTL Circuit for Use With Stored Program Control Offices |
| SD-99545-01 | 1979-03-22 | 3D | 919.46 KB | Common Systems - Emergency Reporting System - Long Line Circuit for Use with PBX No. 520 Type |
| SD-99555-01 | 1976-11-16 | 10B | 2.61 MB | Common Systems - Communication Panel for Unitized Terminal Equipment |
| SD-99558-01 | 1977-05-16 | 3 | 6.88 MB | Common Systems - Pulsing Requirements - Local and Toll Connecting Trunks |
| SD-99560-01 | 1976-11-27 | 13A | 16.35 MB | Common Systems - Switched Maintenance Access System No. 4A - Controller and Connector Circuit |
| SD-99625-01 | 1979-02-06 | 9B | 769.67 KB | Common Systems - Switched Maintenance Access System No. 4A/5B - Miscellaneous Fusing and Fuse Alarm Circuit |
| SD-99641-01 | 1979-02-07 | 2A | 1.88 MB | Common Systems - Switched Maintenance Access System No. 5B - Interface Circuit |
| SD-99645-01 | 1978-07-19 | 2A | 2.61 MB | Common Systems - Switched Maintenance Access System No. 5A or 5B - Jack, Key, and Lamp Circuit |
| SD-99700-03 | 1970-08-06 | 3B | 205.40 KB | Common Systems - Transmission Measuring - 23C and 23CR Transmission Measuring Sets |
| SD-99723-01 | 1979-01-24 | 8D | 1.34 MB | Common Systems - KS-19219,L1 Amplifier Circuit |
| SD-99724-01 | 1979-01-24 | 6D | 550.17 KB | Common Systems - KS-19220, L1 & L2 Amplifier Circuit |
| SD-99725-01 | 1979-01-24 | 8D | 440.28 KB | Common Systems - KS-19221,L1 Amplifier Circuit |
| SD-99785-01 | 1979-03-02 | 4A | 696.72 KB | Common Systems - Switched Maintenance Access System No. 4A - Far End Control Circuit - Fusing and Fuse Alarm Circuit |