| Division
| Title
|
| 000 | Documentation General Information and Specifications
(98 files / 398.15 MB) |
| 001 | Reserved for Company - Issued
(16 files / 10.30 MB) |
| 002 | Administrative Practices
(93 files / 142.05 MB) |
| 004 | Number Assignments to be Made Locally
(3 files / 0.34 MB) |
| 005 | Abbreviations, Definitions, Drawing, Requirement Tables, Specifications, and Symbols
(52 files / 176.21 MB) |
| 006 | Graphic Media Systems and Standards
(17 files / 13.15 MB) |
| 007 | Information Systems
(141 files / 147.00 MB) |
| 010 | General Methods
(272 files / 328.70 MB) |
| 015 | Work Units
(26 files / 32.13 MB) |
| 020 | General Information
(6 files / 0.60 MB) |
| 024 | Amplifiers, Controllers, Control Units, Regulators, Electron Tubes
(209 files / 134.37 MB) |
| 026 | Circuit Breakers, Compensators, Contactors, Control Panels, Fuses and Mountings, Magnetic Switches, Selectors and Starters
(116 files / 163.83 MB) |
| 028 | Autotransformers, Bells, Buzzers, Dials, Dial Adapters and Mountings, Gongs, Head Telephone Sets, Headsets, Potentiometers, Rheostats, Ringers, and Sounders
(104 files / 97.81 MB) |
| 030 | Calculagraphs, Call Timing Switch, Cameras, Clocks, Counters, Photo Processors, Registers, Selector Multiple Designation Cards, Switches, Tape Printers, Ticketers, Timers, and Time Stamp
(231 files / 311.17 MB) |
| 032 | Capacitors, Connectors, Cords, Core Reels, Diodes, Drops, Jacks, Keys, Lamps, Plugs, Resistors, Signals, Sockets, Thermistors, Transistors, and Varistors
(271 files / 142.68 MB) |
| 034 | Distributors, Regenerators
(49 files / 95.74 MB) |
| 040 | Relays
(253 files / 308.25 MB) |
| 065 | Miscellaneous Equipment and Materials
(68 files / 28.09 MB) |
| 067 | Concentrators
(72 files / 50.43 MB) |
| 069 | Apparatus and Equipment Cabling, Wiring, Cleaning, Treating, etc. Methods
(111 files / 94.87 MB) |
| 074 | Tools
(376 files / 48.20 MB) |
| 075 | Tools and Materials (Common Usage) - Maintenance
(51 files / 27.24 MB) |
| 076 | Tools and Materials - Switching Systems and Power Maintenance, Selection and Use
(10 files / 11.44 MB) |
| 080 | Tools and Materials - Customer Equipment
(78 files / 45.67 MB) |
| 081 | Tools and Materials - Outside Plant
(283 files / 260.13 MB) |
| 084 | Gauges, Electrical Indicating Instruments, and Meters
(10 files / 1.53 MB) |
| 085 | Gauges (Common Usage) - Maintenance, Selection, and Use
(4 files / 1.32 MB) |
| 100 | Test Equipment, Electrical Indicating Instruments and Meters (Common Usage) Maintenance, Selection, and Use
(99 files / 165.20 MB) |
| 102 | Test Equipment, Electrical Indicating Instruments and Meters (Switching Systems and Power) - Maintenance, Selection and Use
(1 file / 0.05 MB) |
| 103 | Transmission Test Equipment
(102 files / 154.79 MB) |
| 104 | Radio Test Equipment
(21 files / 12.37 MB) |
| 105 | PBX and Station Test Equipment
(10 files / 9.21 MB) |
| 106 | Electrical Test Equipment - Outside Plant
(22 files / 12.82 MB) |
| 107 | Data and Teletypewriter Testing
(2 files / 5.63 MB) |
| 155 | Alternators, Engine-Alternators, Gas Turbine Alternators, Tone Alternators, Tone Machines, Ringing and Coin Control Generators, Charging Generators, and Motor-Generators
(93 files / 141.80 MB) |
| 157 | Batteries
(84 files / 79.09 MB) |
| 159 | Engines and Engine Sets, Motors, Dynamotors, and Drives
(19 files / 57.88 MB) |
| 161 | Speed Reduction Units, Converters, Inverters, Air Dryers, Compressors, Compressor-Dehydrators, Waveguide Dehydrators, Exhauster Sets, Fans, Tube Cooling Systems, Ventilating Equipment, Call Announcer Machines
(55 files / 40.36 MB) |
| 163 | Interrupters, Ringing Machines, and Pole Changers
(20 files / 10.94 MB) |
| 164 | Powerware (Post-Divestiture)
(2 files / 6.57 MB) |
| 167 | Power Plants, Power Units, and Power Supplies
(170 files / 223.00 MB) |
| 169 | Rectifiers and Filament Supplies
(223 files / 153.30 MB) |
| 171 | Miscellaneous Power Circuits and Equipment
(26 files / 15.77 MB) |
| 179 | Signaling Circuits and Associates Ringer Circuits
(142 files / 193.43 MB) |
| 190 | Operations Support Systems Operation, Maintenance, and Administration
(224 files / 548.07 MB) |
| 193 | Computer Applications Software Support Products
(3 files / 5.25 MB) |
| 200 | Switching Systems
(3 files / 1.57 MB) |
| 201 | Central Office Supplemental Information
(494 files / 716.61 MB) |
| 205 | Automatic Data Test Circuits
(3 files / 0.63 MB) |
| 210 | Service Observing and Plant Traffic Desks
(30 files / 15.37 MB) |
| 211 | No. 1, 3, 5, and 6 Toll Offices, No. 1, 3, 5, and 6 Toll Switchboards and No. 6A Teletypewriter Switchboards
(5 files / 3.50 MB) |
| 212 | No. 4A and 4M Toll Switching Systems
(36 files / 39.11 MB) |
| 213 | No. 1 Accounting Center - Automatic Message Accounting System
(2 files / 0.64 MB) |
| 215 | Panel Offices
(78 files / 454.17 MB) |
| 216 | No. 1 Crossbar Offices
(261 files / 236.92 MB) |
| 218 | No. 3, No. 5, and No. 5A Crossbar Offices
(474 files / 313.84 MB) |
| 220 | Crossbar Tandem Offices
(16 files / 3.24 MB) |
| 225 | Testing Information Applying to Specific Step-By-Step and Community Dial Offices
(30 files / 7.90 MB) |
| 226 | Equipment Common to More Than One Type - Step-By-Step and Community Dial Office
(334 files / 145.30 MB) |
| 227 | General and Testing Information Applying to Intertoll Dialing, CAMA, AMA, ANI, TOUCH-TONE Calling and Common Control Equipment - Step-by-Step Offices
(74 files / 61.34 MB) |
| 231 | 1 and 1A ESS Switches
(249 files / 346.32 MB) |
| 232 | 2ESS
(240 files / 353.99 MB) |
| 233 | 3ESS
(131 files / 498.31 MB) |
| 234 | 4ESS
(193 files / 725.65 MB) |
| 235 | 5ESS-2000 Switch Digital Switching System
(51 files / 355.99 MB) |
| 240 | No. 101 Electronic Switching System
(31 files / 55.84 MB) |
| 241 | Nortel Switches
(19 files / 35.91 MB) |
| 250 | Operator and Traffic Service Positioning Systems
(1 file / 0.30 MB) |
| 252 | Traffic Management Systems
(59 files / 78.85 MB) |
| 254 | Stored Program Control
(90 files / 257.49 MB) |
| 255 | Processor Controlled and Ancillary Systems DATAKIT 10A Remote Switching, 1 Packet Switching, And Database Systems
(51 files / 64.38 MB) |
| 256 | Common Channel Signaling System (CCSS)
(13 files / 31.82 MB) |
| 270 | Advanced Intelligent Network (A-I-Net)/Advanced Network Services (ANS) Products
(1 file / 0.35 MB) |
| 275 | Internet Protocol Multimedia Subsystem (IMS) Solution
(43 files / 29.35 MB) |
| 300 | Transmission Systems and Testing Cross-Reference List
(6 files / 2.65 MB) |
| 301 | Transmission Performance Measurement Plans
(41 files / 18.87 MB) |
| 302 | Transmission Test Line Directories
(16 files / 6.08 MB) |
| 304 | Transmission Data
(203 files / 51.72 MB) |
| 309 | Switched Services Networks
(25 files / 21.57 MB) |
| 310 | Non-switched Special Services Systems
(123 files / 118.85 MB) |
| 311 | Switched Special Services Systems
(28 files / 40.60 MB) |
| 312 | Private Line Data Systems and Services
(99 files / 143.13 MB) |
| 313 | Voice, Data, and Video Transmission Systems
(14 files / 22.01 MB) |
| 314 | Digital and Analog Data Transmission Systems
(243 files / 188.41 MB) |
| 318 | Television Systems
(18 files / 14.78 MB) |
| 320 | Program Transmission Systems and Services
(25 files / 14.72 MB) |
| 330 | Cable and Open-Wire Testing and Trouble Location Methods
(26 files / 18.95 MB) |
| 331 | Transmission and Noise Testing, Central Office PBX Customer Lines and Equipment
(22 files / 17.75 MB) |
| 332 | Voice-Frequency Telephone Repeaters, Pilot Wire Regulators, Echo Cancellers/Suppressors, Composite Sets, and Associated Equipment
(270 files / 184.34 MB) |
| 333 | Interoffice Signaling Systems and Testing
(7 files / 19.26 MB) |
| 356 | Broad Band Carrier - Common Equipment Components Type J, K, and L Carrier Telephone Systems, Analog Multiplex Terminal Equipment
(205 files / 98.55 MB) |
| 357 | Wire Line Entrance Links and Broadband Entrance Links and Interconnection
(1 file / 4.08 MB) |
| 359 | L3, L4, L45, L5, and L5E Carrier
(1 file / 2.28 MB) |
| 361 | Service Center Tests Type N, O, and ON Carrier Systems
(1 file / 3.25 MB) |
| 362 | Type N, O, and ON Carrier Telephone Systems and Associated Equipment Components
(271 files / 276.10 MB) |
| 363 | Loop Transmission Systems
(398 files / 641.24 MB) |
| 365 | Digital Transmission Systems
(453 files / 1921.45 MB) |
| 400 | Radio Administration
(62 files / 42.12 MB) |
| 402 | Antennas, Transmission Lines, and Waveguide
(84 files / 70.31 MB) |
| 403 | Coastal Harbor, High Seas, Overseas, And Emergency Point-to-Point Radio
(53 files / 55.24 MB) |
| 404 | Manual Mobile Radio
(8 files / 1.48 MB) |
| 405 | MJ, MK, and ML Mobile Radiotelephone
(2 files / 0.46 MB) |
| 406 | Air Ground Radio
(26 files / 63.74 MB) |
| 408 | Narrowband Auxiliary Channel And Other Non-Lucent Technologies Radio Equipment And TV Off-The-Air Pick-Up Services
(1 file / 0.15 MB) |
| 409 | TE, TJ, TL, and TM Microwave Radio
(53 files / 75.98 MB) |
| 410 | TD-2 Microwave Radio
(2 files / 2.81 MB) |
| 411 | TD-3 Microwave Radio
(107 files / 73.39 MB) |
| 415 | TD-3D Microwave Radio
(7 files / 16.65 MB) |
| 417 | 3A-Radio Digital Systems
(1 file / 0.04 MB) |
| 420 | Microwave Radio - Common Equipment
(4 files / 1.06 MB) |
| 421 | FR/DR Microwave Radio System
(10 files / 4.10 MB) |
| 422 | Common Microwave Radio
(8 files / 18.14 MB) |
| 460 | General Information, Customer Information, Customer Equipment
(70 files / 198.25 MB) |
| 461 | Wiring and Cabling Customer Equipment
(175 files / 319.26 MB) |
| 462 | Drop and Block Wiring Dedicated Plant and C Rural Wire
(158 files / 206.95 MB) |
| 463 | Miscellaneous Station Apparatus for use With Station Installations Customer Equipment
(129 files / 503.05 MB) |
| 469 | Administrative Information, Customer Equipment
(20 files / 10.03 MB) |
| 471 | Other Common Carriers
(4 files / 6.65 MB) |
| 473 | Intra-PBX Protection of Service, Code Calling, Customer Training, Dispatching, Emergency Reporting, Interface Trunks, Message Waiting, Recorded Telephone Dictation, Telephone Answering Systems, and Transmitter Transfer Customer Equipment
(29 files / 34.11 MB) |
| 475 | Call Distributing Systems, Information Desks, and Order Turrets Customer Equipment
(1 file / 1.29 MB) |
| 476 | Force Administration Data System (FADS), Automatic Call Distributing Systems (ACD) No. 2A, 2B, and 3A, and Call Distributing System No. 4A Customer Equipment
(2 files / 0.13 MB) |
| 480 | Private Service Systems Customer Equipment
(62 files / 76.41 MB) |
| 481 | Teleconferencing Services
(3 files / 5.14 MB) |
| 500 | General Considerations for Station Installations Customer Equipment
(54 files / 37.58 MB) |
| 501 | Business Systems and Station Equipment Station Set Components, Customer Equipment
(210 files / 232.90 MB) |
| 502 | Common Battery Station Sets
(695 files / 889.45 MB) |
| 503 | Modular Station Sets
(145 files / 519.51 MB) |
| 504 | Selector Consoles, Telephone Consoles, Apparatus Units
(7 files / 14.07 MB) |
| 506 | Small business Systems and Station Equipment, Public Telephone Sets
(150 files / 347.23 MB) |
| 508 | Public Telephone Enclosures and Miscellaneous Accessories
(170 files / 450.25 MB) |
| 510 | Station Sets and Coin Collectors Local Battery and Magneto
(69 files / 29.79 MB) |
| 512 | Automatic Dialers, Station Keys, Key Equipment Interphone Systems, Modular Units, Speakerphone Systems and Conference Sets
(170 files / 194.10 MB) |
| 514 | Telephone Answering Sets and Systems and Announcement Sets and Systems
(43 files / 170.94 MB) |
| 518 | Key Telephone Systems, Communications Systems, and Switching System No. 400
(410 files / 1031.47 MB) |
| 529 | Station Apparatus and Equipment Intended Solely for Specially Engineered Lines Not For General Telephone Use
(27 files / 57.53 MB) |
| 533 | Large Business Systems (PBXs) Customer Premises Systems and Customer Services Provided by ESS Switches
(2 files / 3.00 MB) |
| 534 | Sections Applying to More Than One PBX - Series 500, 600, 700, and 800 Series Manual and Dial PBX
(15 files / 21.30 MB) |
| 536 | 500 Series PBX
(33 files / 36.30 MB) |
| 538 | 600 Series PBX
(1 file / 3.14 MB) |
| 540 | Sections Applying to More Than One 700 Series PBX
(9 files / 12.15 MB) |
| 546 | 740 Type PBX
(1 file / 5.43 MB) |
| 548 | 750A PBX
(10 files / 6.12 MB) |
| 550 | 755A PBX
(11 files / 22.57 MB) |
| 551 | 756A, 757A, 758A, 58B, 758C, 761, and 770 PBX
(9 files / 32.84 MB) |
| 552 | Non-Bell Type PBX
(2 files / 0.25 MB) |
| 553 | 800 Series PBX
(4 files / 19.58 MB) |
| 554 | Business Communications Systems - DIMENSION PBX
(52 files / 360.85 MB) |
| 555 | Definity Communications Systems 25, 75, 85, Merlin Legend and Common Systems, Information Systems Network, and Premises Distribution System
(1249 files / 3737.81 MB) |
| 560 | Data Systems Production, Cross Production
(8 files / 11.63 MB) |
| 562 | StarServer
(1 file / 3.13 MB) |
| 570 | Teletypewriter General Information - Misc. Apparatus and Auxiliary Equipment
(76 files / 102.01 MB) |
| 572 | 14, 15, 19 and 20 Type Teletypewriters
(7 files / 6.66 MB) |
| 573 | 28-Type Teletypewriters
(326 files / 799.39 MB) |
| 574 | Teletypewriter 30 Series and Teleprinters
(279 files / 532.59 MB) |
| 578 | Miscellaneous Data Terminals
(81 files / 164.03 MB) |
| 579 | Teletypewriter Field Maintenance/Field Installation Practices
(3 files / 30.93 MB) |
| 580 | Teletypewriter Switching Systems
(2 files / 0.29 MB) |
| 582 | Data Communications Equipment Systems, Services, and Components
(54 files / 111.08 MB) |
| 585 | Computer Products Adjunct Processors and Services For Business Communications Systems
(897 files / 1684.11 MB) |
| 590 | Data Systems - General Information
(63 files / 38.11 MB) |
| 591 | 100 Series Data Sets and Associated Services
(111 files / 209.13 MB) |
| 592 | 200 Series Data Sets and Associated Services
(249 files / 521.92 MB) |
| 594 | 400 Series Data Sets and Associated Services
(6 files / 11.38 MB) |
| 595 | 500-Type Service Units and Sets for Digital Systems/Services
(21 files / 35.88 MB) |
| 598 | 800 Series Auxiliary Equipment
(10 files / 31.10 MB) |
| 620 | Outside Plant, General
(99 files / 107.55 MB) |
| 621 | Pole Lines
(37 files / 14.63 MB) |
| 622 | Conduit, Manholes, and Cable Vaults
(5 files / 0.92 MB) |
| 623 | Open Wire
(23 files / 7.21 MB) |
| 624 | Multiple Wire
(36 files / 8.37 MB) |
| 626 | Cables, Wire, and Apparatus
(18 files / 8.59 MB) |
| 627 | Aerial, Block, and House Cable
(56 files / 29.92 MB) |
| 628 | Underground Cable
(14 files / 25.61 MB) |
| 629 | Buried Plant
(39 files / 38.49 MB) |
| 631 | Cable Terminals
(96 files / 252.70 MB) |
| 632 | Cable Splicing
(40 files / 39.48 MB) |
| 633 | Splice Closures
(70 files / 139.93 MB) |
| 634 | Electrical Cable Testing and Identification
(60 files / 78.71 MB) |
| 636 | Main Frame Terminations and Connectors
(4 files / 12.16 MB) |
| 637 | Cable Pressure Systems
(39 files / 26.31 MB) |
| 638 | Electrical Protection and Bonding
(5 files / 0.66 MB) |
| 640 | Outside Plant Carrier Apparatus
(13 files / 43.54 MB) |
| 642 | Dedicated Plant
(4 files / 4.19 MB) |
| 644 | Upkeep
(11 files / 36.69 MB) |
| 649 | Outside Plant Construction Equipment
(32 files / 17.35 MB) |
| 650 | Converged Stackable Switch (Post-Divestiture)
(2 files / 1.12 MB) |
| 660 | Test Center Operation
(213 files / 258.76 MB) |
| 662 | Cable and Local Test Desks and Local Test Cabinets
(25 files / 53.60 MB) |
| 664 | Testboards for Other Than Special Services
(9 files / 22.22 MB) |
| 666 | Testboards and Test Positions For Special Services
(31 files / 43.88 MB) |
| 667 | Switched Maintenance Access and Servicing Systems
(6 files / 12.87 MB) |
| 668 | Data Test Centers
(4 files / 1.05 MB) |
| 670 | VPNmanager (Post-Divestiture)
(20 files / 29.71 MB) |
| 680 | Loop Assignment Distribution Service
(79 files / 77.23 MB) |
| 682 | Plant Assignment Trunk Plant and Special Services
(9 files / 4.80 MB) |
| 701 | Bogen Communications Products (Post-Divestiture)
(30 files / 9.46 MB) |
| 720 | Motor Vehicles and Construction Equipment
(37 files / 26.30 MB) |
| 740 | Materials Management and Supplies General Information
(4 files / 3.42 MB) |
| 741 | Products, Supplies, Systems and Services Supporting Functions
(6 files / 8.97 MB) |
| 742 | Supply Controls
(16 files / 11.14 MB) |
| 743 | Supply Ordering
(4 files / 1.95 MB) |
| 744 | Supply Distribution
(3 files / 5.03 MB) |
| 745 | Material Returns
(10 files / 8.85 MB) |
| 746 | Supply Functions, Miscellaneous
(1 file / 0.42 MB) |
| 747 | Shipping Logistics
(13 files / 17.73 MB) |
| 748 | Stocking Procedures
(9 files / 16.19 MB) |
| 749 | Plug-In Inventory Control
(8 files / 15.98 MB) |
| 750 | BISP General
(1 file / 2.17 MB) |
| 751 | Business Information Systems - COMMON LANGUAGE
(109 files / 58.19 MB) |
| 752 | Software Product Specifications
(3 files / 105.69 MB) |
| 753 | COSMOS Software
(1 file / 0.14 MB) |
| 759 | Business Information Systems - Time Share Program
(7 files / 13.51 MB) |
| 760 | Building Engineering
(182 files / 115.09 MB) |
| 770 | Building Operation
(119 files / 56.70 MB) |
| 780 | Network Services Methods
(51 files / 63.64 MB) |
| 781 | Technical Planning
(2 files / 3.87 MB) |
| 790 | Engineering Administrative Practices
(48 files / 32.02 MB) |
| 795 | COMMON LANGUAGE
(713 files / 226.28 MB) |
| 800 | Cross-Reference Lists, Floor Plan Data Sheets, Administrative Information, General Equipment Requirements For Installation and Manufacturing, And General Performance Raquirements
(136 files / 133.26 MB) |
| 801 | Equipment Design and General Requirements - Engineering Information - Common Systems
(37 files / 31.97 MB) |
| 802 | Equipment Design and General Requirements - Engineering Information - Power Systems
(13 files / 23.63 MB) |
| 803 | Grounding Systems
(1 file / 8.82 MB) |
| 804 | Equipment Design and General Requirements - Engineering Information - Toll Systems
(15 files / 10.44 MB) |
| 809 | Equipment Design and General Requirements - Engineering Information - Private Branch Exchange Systems
(7 files / 7.87 MB) |
| 812 | Equipment Design and General Requirements - Engineering Information - Station Systems
(15 files / 12.34 MB) |
| 814 | Equipment Design and General Requirements - Engineering Information - Step-by-Step Systems
(61 files / 31.23 MB) |
| 815 | Equipment Design and General Requirements - Engineering Information - Panel Systems
(9 files / 5.47 MB) |
| 816 | Equipment Design and General Requirements - Engineering Information - No. 1 Crossbar System
(105 files / 57.46 MB) |
| 817 | Equipment Design and General Requirements - Engineering Information - Tandem Crossbar System
(31 files / 24.59 MB) |
| 818 | Equipment Design and General Requirements - Engineering Information - No. 4 Type Toll Switching Systems
(5 files / 1.90 MB) |
| 820 | Equipment Design and General Requirements - Engineering Information - 1, 1A, 2, 2A, 3 and 4ESS and 5ESS 1A Processor
(12 files / 10.44 MB) |
| 821 | Equipment Design and General Requirements - Engineering Information - Traffic Service Systems
(2 files / 2.61 MB) |
| 824 | Equipment Design and General Requirements - Operations Support Systems
(9 files / 47.40 MB) |
| 846 | AT&T Pay Phones
(2 files / 2.72 MB) |
| 851 | Special Services Systems - Engineering Design Information
(4 files / 4.72 MB) |
| 852 | Exchange Area and Operator Services Transmission
(22 files / 26.49 MB) |
| 853 | Toll Transmission
(2 files / 0.07 MB) |
| 855 | Carrier Engineering
(9 files / 19.09 MB) |
| 876 | Electrical Protection Practices
(9 files / 17.75 MB) |
| 900 | Outside Plant Engineering - General Information
(1 file / 16.00 MB) |
| 915 | Outside Plant Engineering - Facility Design - Systems
(1 file / 7.36 MB) |
| 918 | Outside Plant Engineering - Facility Design - Applied Protection
(2 files / 1.26 MB) |
| 936 | Outside Plant Engineering - Management - Controlling
(1 file / 8.55 MB) |
| 940 | Radio Engineering
(59 files / 80.78 MB) |
| 953 | Switchboards, Desks and Associated Equipment - General Descriptive Information
(1 file / 0.04 MB) |
| 955 | Step-By-Step and Community Dial Offices - General Descriptive Information
(7 files / 7.46 MB) |
| 970 | Transmission Systems - General
(1 file / 1.04 MB) |
| 972 | Teletypewriter and Data Systems - General Descriptive Information
(6 files / 15.63 MB) |
| 975 | Signaling Systems - General Descriptive Information
(7 files / 17.82 MB) |
| 981 | Equipment on Customer's Premises (Special Services and Private Branch Exchanges) - General Descriptive Information
(18 files / 56.91 MB) |
| 982 | Private Service Systems - General Descriptive Information
(13 files / 8.89 MB) |
| 999 | Product Documentation - User
(147 files / 477.18 MB) |