Total files: 16672 Total size: 25.35 GB
Division Title
000Documentation General Information and Specifications (87 files / 361.08 MB)
001Reserved for Company - Issued (10 files / 6.81 MB)
002Administrative Practices (83 files / 138.04 MB)
004Number Assignments to be Made Locally (3 files / 0.34 MB)
005Abbreviations, Definitions, Drawing, Requirement Tables, Specifications, and Symbols (45 files / 165.91 MB)
006Graphic Media Systems and Standards (17 files / 13.15 MB)
007Information Systems (141 files / 147.00 MB)
010General Methods (244 files / 318.74 MB)
015Work Units (24 files / 31.69 MB)
020General Information (4 files / 0.62 MB)
024Amplifiers, Controllers, Control Units, Regulators, Electron Tubes (139 files / 79.04 MB)
026Circuit Breakers, Compensators, Contactors, Control Panels, Fuses and Mountings, Magnetic Switches, Selectors and Starters (103 files / 158.59 MB)
028Autotransformers, Bells, Buzzers, Dials, Dial Adapters and Mountings, Gongs, Head Telephone Sets, Headsets, Potentiometers, Rheostats, Ringers, and Sounders (77 files / 84.18 MB)
030Calculagraphs, Call Timing (206 files / 291.98 MB)
032Capacitors, Connectors, Cords, Core Reels, Diodes, Drops, Jacks, Keys, Lamps, Plugs, Resistors, Signals, Sockets, Thermistors, Transistors, and Varistors (260 files / 133.47 MB)
034Distributors, Regenerators (17 files / 46.46 MB)
040Relays (236 files / 282.46 MB)
065Miscellaneous Equipment and Materials (44 files / 23.32 MB)
067Concentrators (70 files / 46.70 MB)
069Apparatus and Equipment Cabling, Wiring, Cleaning, Treating, etc. Methods (74 files / 64.22 MB)
074Tools (375 files / 48.06 MB)
075Tools and Materials (Common Usage) - Maintenance (46 files / 25.30 MB)
076Tools and Materials - Switching Systems and Power Maintenance, Selection and Use (10 files / 11.44 MB)
080Tools and Materials - Customer Equipment (78 files / 45.67 MB)
081Tools and Materials - Outside Plant (263 files / 260.67 MB)
084Gauges, Electrical Indicating Instruments, and Meters (8 files / 1.42 MB)
085Gauges (Common Usage) - Maintenance, Selection, and Use (4 files / 1.35 MB)
100Test Equipment, Electrical Indicating Instruments and Meters (Common Usage) Maintenance, Selection, and Use (30 files / 77.11 MB)
103Transmission Test Equipment (95 files / 149.98 MB)
105PBX and Station Test Equipment (10 files / 9.21 MB)
106Electrical Test Equipment - Outside Plant (7 files / 6.62 MB)
107Data and Teletypewriter Testing (2 files / 5.63 MB)
155Alternators, Engine-Alternators, Gas Turbine Alternators, Tone Alternators, Tone Machines, Ringing and Coin Control Generators, Charging Generators, and Motor-Generators (15 files / 18.27 MB)
157Batteries (61 files / 51.14 MB)
159Engines and Engine Sets, Motors, Dynamotors, and Drives (3 files / 0.42 MB)
161Speed Reduction Units, Converters, Inverters, Air Dryers, Compressors, Compressor-Dehydrators, Waveguide Dehydrators, Exhauster Sets, Fans, Tube Cooling Systems, Ventilating Equipment, Call Announcer Machines (7 files / 11.03 MB)
163Interrupters, Ringing Machines, and Pole Changers (3 files / 3.80 MB)
164Powerware (Post-Divestiture) (2 files / 6.57 MB)
167Power Plants, Power Units, and Power Supplies (111 files / 175.98 MB)
169Rectifiers and Filament Supplies (171 files / 127.44 MB)
171Miscellaneous Power Circuits and Equipment (16 files / 17.78 MB)
179Signaling Circuits and Associates Ringer Circuits (119 files / 174.12 MB)
190Operations Support Systems Operation, Maintenance, and Administration (143 files / 302.94 MB)
193Computer Applications Software Support Products (3 files / 5.25 MB)
200Switching Systems (2 files / 1.55 MB)
201Central Office Supplemental Information (473 files / 667.75 MB)
205Automatic Data Test Circuits (3 files / 0.79 MB)
210Service Observing and Plant Traffic Desks (30 files / 15.37 MB)
211No. 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)
212No. 4A and 4M Toll Switching Systems (36 files / 39.11 MB)
213No. 1 Accounting Center - Automatic Message Accounting System (2 files / 0.64 MB)
215Panel Offices (3 files / 0.96 MB)
216No. 1 Crossbar Offices (261 files / 236.92 MB)
218No. 3, No. 5, and No. 5A Crossbar Offices (473 files / 313.78 MB)
220Crossbar Tandem Offices (16 files / 3.24 MB)
225Testing Information Applying to Specific Step-By-Step and Community Dial Offices (10 files / 3.54 MB)
226Equipment Common to More Than One Type - Step-By-Step and Community Dial Office (207 files / 92.61 MB)
227General and Testing Information Applying to Intertoll Dialing, CAMA, AMA, ANI, TOUCH-TONE Calling and Common Control Equipment - Step-by-Step Offices (56 files / 57.57 MB)
2311 and 1A ESS Switches (34 files / 42.59 MB)
2322ESS (240 files / 353.79 MB)
2333ESS (8 files / 6.07 MB)
2344ESS (193 files / 725.65 MB)
2355ESS-2000 Switch Digital Switching System (13 files / 36.05 MB)
241Nortel Switches (19 files / 35.91 MB)
250Operator and Traffic Service Positioning Systems (1 file / 0.30 MB)
252Traffic Management Systems (59 files / 78.85 MB)
254Stored Program Control (77 files / 172.54 MB)
255Processor Controlled and Ancillary Systems DATAKIT 10A Remote Switching, 1 Packet Switching, And Database Systems (27 files / 43.00 MB)
256Common Channel Signaling System (CCSS) (13 files / 31.79 MB)
300Transmission Systems and Testing Cross-Reference List (6 files / 2.65 MB)
301Transmission Performance Measurement Plans (41 files / 18.87 MB)
302Transmission Test Line Directories (16 files / 6.08 MB)
304Transmission Data (203 files / 51.72 MB)
309Switched Services Networks (25 files / 21.57 MB)
310Non-switched Special Services Systems (123 files / 118.85 MB)
311Switched Special Services Systems (28 files / 40.60 MB)
312Private Line Data Systems and Services (73 files / 98.50 MB)
313Voice, Data, and Video Transmission Systems (14 files / 22.01 MB)
314Digital and Analog Data Transmission Systems (230 files / 181.05 MB)
318Television Systems (18 files / 14.78 MB)
320Program Transmission Systems and Services (25 files / 14.72 MB)
330Cable and Open-Wire Testing and Trouble Location Methods (25 files / 18.92 MB)
331Transmission and Noise Testing, Central Office PBX Customer Lines and Equipment (21 files / 17.71 MB)
332Voice-Frequency Telephone Repeaters, Pilot Wire Regulators, Echo Cancellers/Suppressors, Composite Sets, and Associated Equipment (249 files / 176.27 MB)
333Interoffice Signaling Systems and Testing (7 files / 19.26 MB)
356Broad Band Carrier - Common Equipment Components Type J, K, and L Carrier Telephone Systems, Analog Multiplex Terminal Equipment (205 files / 98.55 MB)
357Wire Line Entrance Links and Broadband Entrance Links and Interconnection (1 file / 4.08 MB)
359L3, L4, L45, L5, and L5E Carrier (1 file / 2.28 MB)
361Service Center Tests Type N, O, and ON Carrier Systems (1 file / 3.25 MB)
362Type N, O, and ON Carrier Telephone Systems and Associated Equipment Components (231 files / 245.48 MB)
363Loop Transmission Systems (387 files / 606.95 MB)
365Digital Transmission Systems (437 files / 1902.64 MB)
400Radio Administration (37 files / 23.01 MB)
402Antennas, Transmission Lines, and Waveguide (67 files / 56.87 MB)
403Coastal Harbor, High Seas, Overseas, And Emergency Point-to-Point Radio (53 files / 55.24 MB)
404Manual Mobile Radio (8 files / 1.48 MB)
409TE, TJ, TL, and TM Microwave Radio (52 files / 75.79 MB)
410TD-2 Microwave Radio (1 file / 2.63 MB)
4173A-Radio Digital Systems (1 file / 0.04 MB)
460General Information, Customer Information, Customer Equipment (70 files / 198.25 MB)
461Wiring and Cabling Customer Equipment (170 files / 306.49 MB)
462Drop and Block Wiring Dedicated Plant and C Rural Wire (150 files / 185.64 MB)
463Miscellaneous Station Apparatus for use With Station Installations Customer Equipment (127 files / 502.97 MB)
469Administrative Information, Customer Equipment (20 files / 10.03 MB)
471Other Common Carriers (4 files / 6.65 MB)
473Intra-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 (28 files / 34.12 MB)
475Call Distributing Systems, Information Desks, and Order Turrets Customer Equipment (1 file / 1.29 MB)
476Force 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)
480Private Service Systems Customer Equipment (46 files / 62.75 MB)
481Teleconferencing Services (3 files / 5.14 MB)
500General Considerations for Station Installations Customer Equipment (52 files / 36.78 MB)
501Business Systems and Station Equipment Station Set Components, Customer Equipment (203 files / 231.79 MB)
502Common Battery Station Sets (664 files / 816.53 MB)
503Modular Station Sets (138 files / 507.28 MB)
504Selector Consoles, Telephone Consoles, Apparatus Units (2 files / 2.35 MB)
506Small business Systems and Station Equipment, Public Telephone Sets (143 files / 316.00 MB)
508Public Telephone Enclosures and Miscellaneous Accessories (159 files / 428.41 MB)
510Station Sets and Coin Collectors Local Battery and Magneto (69 files / 29.79 MB)
512Automatic Dialers, Station Keys, Key Equipment Interphone Systems, Modular Units, Speakerphone Systems and Conference Sets (168 files / 193.16 MB)
514Telephone Answering Sets and Systems and Announcement Sets and Systems (43 files / 170.94 MB)
518Key Telephone Systems, Communications Systems, and Switching System No. 400 (408 files / 1030.08 MB)
529Station Apparatus and Equipment Intended Solely for Specially Engineered Lines Not For General Telephone Use (27 files / 55.06 MB)
533Large Business Systems (PBXs) Customer Premises Systems and Customer Services Provided by ESS Switches (2 files / 3.00 MB)
534Sections Applying to More Than One PBX - Series 500, 600, 700, and 800 Series Manual and Dial PBX (13 files / 21.15 MB)
536500 Series PBX (33 files / 36.30 MB)
538600 Series PBX (1 file / 3.14 MB)
540Sections Applying to More Than One 700 Series PBX (9 files / 12.15 MB)
546740 Type PBX (1 file / 5.43 MB)
548750A PBX (10 files / 6.12 MB)
550755A PBX (11 files / 22.57 MB)
551756A, 757A, 758A, 58B, 758C, 761, and 770 PBX (9 files / 32.84 MB)
552Non-Bell Type PBX (2 files / 0.25 MB)
553800 Series PBX (4 files / 19.58 MB)
554Business Communications Systems - DIMENSION PBX (1 file / 7.20 MB)
555Definity Communications Systems 25, 75, 85, Merlin Legend and Common Systems, Information Systems Network, and Premises Distribution System (1236 files / 3449.90 MB)
560Data Systems Production, Cross Production (8 files / 11.63 MB)
562StarServer (1 file / 3.13 MB)
570Teletypewriter General Information - Misc. Apparatus and Auxiliary Equipment (76 files / 102.01 MB)
57214, 15, 19 and 20 Type Teletypewriters (7 files / 6.66 MB)
57328-Type Teletypewriters (286 files / 654.22 MB)
574Teletypewriter 30 Series and Teleprinters (205 files / 415.45 MB)
578Miscellaneous Data Terminals (73 files / 155.54 MB)
579Teletypewriter Field Maintenance/Field Installation Practices (3 files / 30.93 MB)
580Teletypewriter Switching Systems (2 files / 0.29 MB)
582Data Communications Equipment Systems, Services, and Components (54 files / 111.08 MB)
585Computer Products Adjunct Processors and Services For Business Communications Systems (893 files / 1634.93 MB)
590Data Systems - General Information (6 files / 9.94 MB)
591100 Series Data Sets and Associated Services (107 files / 186.22 MB)
592200 Series Data Sets and Associated Services (153 files / 410.34 MB)
594400 Series Data Sets and Associated Services (6 files / 11.38 MB)
595500-Type Service Units and Sets for Digital Systems/Services (16 files / 18.33 MB)
598800 Series Auxiliary Equipment (5 files / 29.61 MB)
620Outside Plant, General (83 files / 97.37 MB)
621Pole Lines (14 files / 5.89 MB)
622Conduit, Manholes, and Cable Vaults (5 files / 0.92 MB)
623Open Wire (10 files / 4.27 MB)
624Multiple Wire (27 files / 6.99 MB)
626Cables, Wire, and Apparatus (14 files / 7.73 MB)
627Aerial, Block, and House Cable (21 files / 14.20 MB)
628Underground Cable (4 files / 16.03 MB)
629Buried Plant (34 files / 37.27 MB)
631Cable Terminals (62 files / 213.26 MB)
632Cable Splicing (2 files / 3.29 MB)
634Electrical Cable Testing and Identification (6 files / 9.63 MB)
636Main Frame Terminations and Connectors (4 files / 12.16 MB)
638Electrical Protection and Bonding (4 files / 0.56 MB)
640Outside Plant Carrier Apparatus (7 files / 39.04 MB)
642Dedicated Plant (4 files / 4.19 MB)
650Converged Stackable Switch (Post-Divestiture) (2 files / 1.12 MB)
660Test Center Operation (181 files / 247.03 MB)
662Cable and Local Test Desks and Local Test Cabinets (23 files / 49.63 MB)
664Testboards for Other Than Special Services (9 files / 22.22 MB)
666Testboards and Test Positions For Special Services (27 files / 40.27 MB)
667Switched Maintenance Access and Servicing Systems (4 files / 12.07 MB)
668Data Test Centers (4 files / 1.05 MB)
670VPNmanager (Post-Divestiture) (20 files / 29.71 MB)
680Loop Assignment Distribution Service (71 files / 69.54 MB)
682Plant Assignment Trunk Plant and Special Services (5 files / 4.16 MB)
701Bogen Communications Products (Post-Divestiture) (30 files / 9.46 MB)
720Motor Vehicles and Construction Equipment (37 files / 26.30 MB)
740Materials Management and Supplies General Information (4 files / 3.42 MB)
741Products, Supplies, Systems and Services Supporting Functions (6 files / 8.97 MB)
742Supply Controls (16 files / 11.14 MB)
743Supply Ordering (4 files / 1.95 MB)
744Supply Distribution (3 files / 5.03 MB)
745Material Returns (8 files / 7.68 MB)
746Supply Functions, Miscellaneous (1 file / 0.42 MB)
747Shipping Logistics (13 files / 17.73 MB)
748Stocking Procedures (9 files / 16.19 MB)
749Plug-In Inventory Control (8 files / 15.98 MB)
750BISP General (1 file / 2.17 MB)
751Business Information Systems - COMMON LANGUAGE (108 files / 57.59 MB)
752Software Product Specifications (3 files / 105.69 MB)
759Business Information Systems - Time Share Program (7 files / 13.51 MB)
760Building Engineering (182 files / 115.09 MB)
770Building Operation (96 files / 52.27 MB)
780Network Services Methods (6 files / 34.21 MB)
781Technical Planning (2 files / 3.87 MB)
790Engineering Administrative Practices (43 files / 29.17 MB)
795COMMON LANGUAGE (712 files / 225.12 MB)
800Cross-Reference Lists, Floor Plan Data Sheets, Administrative Information, General Equipment Requirements For Installation and Manufacturing, And General Performance Raquirements (129 files / 130.54 MB)
801Equipment Design and General Requirements - Engineering Information - Common Systems (36 files / 31.44 MB)
802Equipment Design and General Requirements - Engineering Information - Power Systems (7 files / 21.60 MB)
803Grounding Systems (1 file / 8.82 MB)
804Equipment Design and General Requirements - Engineering Information - Toll Systems (6 files / 5.97 MB)
809Equipment Design and General Requirements - Engineering Information - Private Branch Exchange Systems (1 file / 5.73 MB)
812Equipment Design and General Requirements - Engineering Information - Station Systems (15 files / 12.34 MB)
820Equipment Design and General Requirements - Engineering Information - 1, 1A, 2, 2A, 3 and 4ESS and 5ESS 1A Processor (12 files / 10.44 MB)
821Equipment Design and General Requirements - Engineering Information - Traffic Service Systems (2 files / 2.61 MB)
824Equipment Design and General Requirements - Operations Support Systems (8 files / 47.33 MB)
851Special Services Systems - Engineering Design Information (2 files / 2.86 MB)
852Exchange Area and Operator Services Transmission (3 files / 10.46 MB)
876Electrical Protection Practices (9 files / 17.75 MB)
915Outside Plant Engineering - Facility Design - Systems (1 file / 7.36 MB)
918Outside Plant Engineering - Facility Design - Applied Protection (2 files / 1.26 MB)
940Radio Engineering (59 files / 79.91 MB)
953Switchboards, Desks and Associated Equipment - General Descriptive Information (1 file / 0.04 MB)
955Step-By-Step and Community Dial Offices - General Descriptive Information (6 files / 7.43 MB)
970Transmission Systems - General (1 file / 1.04 MB)
972Teletypewriter and Data Systems - General Descriptive Information (6 files / 15.63 MB)
975Signaling Systems - General Descriptive Information (7 files / 17.82 MB)
981Equipment on Customer's Premises (Special Services and Private Branch Exchanges) - General Descriptive Information (18 files / 56.91 MB)
982Private Service Systems - General Descriptive Information (13 files / 8.89 MB)
999Product Documentation - User (138 files / 402.96 MB)