Division C70: Station Installation and Maintenance - Minor and Major Station Systems (Key Systems) / Tools, Gauges, and Test Sets Methods

Section Date Issue Size Title
C70.0251959-04-011479.71 KBStation Systems - Power Supply - Identification
C70.0251962-04-013552.46 KBStation Systems - Power Supply - Identification
C70.0261962-03-014527.33 KBStation Systems - Power Supply - Installation and Maintenance
C70.026PT A1959-06-01A262.19 KBStation Systems - Power Supply - Installation and Maintenance
C70.026PT A1960-10-01B304.46 KBStation Systems - Power Supply - Installation and Maintenance
C70.0271962-02-0131.93 MBLine Concentrator No. 1A - KS-15917, List 3 Battery Supply
C70.0291962-12-011134.74 KBRectifier, J87202A, List 1
C70.080.11959-06-01192.27 KBKey Equipment 1A - Common Battery - Connections
C70.080.21959-06-01173.74 KBKey Equipment 1A - (Local Battery Talking - Common Battery Signaling) - Connections
C70.0811959-03-011381.89 KB2A and 2B Key Equipments - Identification
C70.0831959-03-011181.62 KB2A and 2B Key Equipments - Connections
C70.1111959-08-0112.28 MB103A Key Equipment - Secretarial Answering Service
C70.121.11959-07-011275.89 KB2A and 2B Key Equipments - Identification
C70.121.21959-08-01164.47 KB2A and 2B Key Telephone Systems - Installation and Maintenance
C70.121.31959-12-011688.22 KB2A and 2B Key Telephone Systems - Connections
C70.1311959-06-011217.03 KB5A and 5B Key Equipments - Identification
C70.1311962-12-012237.26 KB5A and 5B Key Equipments - Identification
C70.1331959-07-011405.04 KB5A and 5B Key Equipments - Installation and Maintenance
C70.1331962-07-012302.71 KB5A and 5B Key Equipments - Installation and Maintenance
C70.1351959-06-011272.57 KB5A and 5B Key Equipments - Connections
C70.160.001962-12-012533.76 KB1A Home Interphone - Identification and Operation
C70.160.011962-09-0146.45 MB1A Home Interphone - Installation and Maintenance
C70.165.001960-08-0113.46 MB2A Farm Interphone - Identification and Operation
C70.165.011961-06-0122.77 MB2A Farm Interphone - Installation and Maintenance
C70.165.021962-02-0141.26 MB2A Farm Interphone - Connections and Modifications
C70.171.00PT1961-01-01A498.78 KBCivil Air Defense Warning System (CADW) - Bell and Lights - Station Equipment - Identification
C70.171.01PT1961-01-01A556.34 KBCivil Air Defense Warning System (CADW) - Bell and Lights - Station Equipment - Installation and Maintenance
C70.171.02PT1961-01-01A300.54 KBCivil Air Defense Warning System (CADW) - Bell and Lights - Station Equipment - Connections
C70.2011959-01-011357.52 KB1A Speakerphone System - Identification
C70.201.001959-10-011356.94 KB1A and 1A1 Speakerphone Systems - Identification
C70.201.011959-11-011191.30 KB1A and 1A1 Speakerphone Systems - Installation and Maintenance
C70.201.021959-11-01195.41 KB1A and 1A1 Speakerphone Systems - Operation
C70.201.031959-11-0111.16 MB1A and 1A1 Speakerphone Systems - Connections
C70.202.001960-09-0112.91 MB3A Speakerphone System - Identification
C70.202.001963-07-0121.44 MBSpeakerphone Systems - 3A - Identification
C70.202.011961-05-0121.47 MB3A Speakerphone System - Installation and Maintenance
C70.202.021960-08-011101.45 KB3A Speakerphone System - Operation
C70.202.031960-09-011936.53 KB3A Speakerphone System - Connections
C70.202.031963-03-014464.88 KB3A Speakerphone System - 55A Control Unit - 666A, 667A, and 667B Transmitter Unit - Connections
C70.202.041962-04-011358.54 KB3A Speakerphone System - 211N/P, 500R/S, 511C/D, 558C/D, 701B, and 711B Telephone Sets - Connections
C70.202.051962-05-011430.78 KB3A Speakerphone System - 560 Series - Connections
C70.202.061963-07-012317.83 KBSpeakerphone Systems - 3A - The Call Director - Connections
C70.202.071962-03-011178.67 KB3A Speakerphone System - Connections - 660 Telephone Sets
C70.2431961-01-01320.20 MBP1 Carrier Telephone System - Identification, General Description, and Use
C70.3301959-07-011298.37 KBTelephotograph Apparatus - Coupling to Telephone Lines
C70.900.00PT1960-09-01A22.97 MBLoudspeaker Paging Systems - Description
C70.900.03PT1960-09-01A2.46 MBLoudspeaker Paging Systems - Connections
C70.904PT1958-11-01A2.76 MBPrivate Line Service - Installation and Maintenance - Program Circuits
C70.904PT A1961-10-01B244.67 KBPrivate Line Service - Installation and Maintenance - Program Circuits
C70.911.00PT1961-05-01A3.67 MBIntercommunicating Systems - Webster Electric Teletalk 1200 Series (Low-Level) - Description
C70.911.01PT1961-05-01A2.01 MBIntercommunicating Systems - Webster Electric Teletalk 1200 Series (Low-Level) - Installation
C70.911.02PT1961-05-01A4.34 MBIntercommunicating Systems - Webster Electric Teletalk 1200 Series (Low-Level) - Maintenance
C70.911.03PT1961-05-01A735.21 KBIntercommunicating Systems - Webster Electric Teletalk 1200 Series (Low-Level) - Connections
C70.911PT1958-02-01A6.81 MBIntercommunicating Systems - Speaker-Microphone - 1200-Series Teletalk - Description
C71.0001958-07-012588.78 KBAlphabetical Index [C71 Division]
C71.0011963-01-018497.25 KBChecking List - C71 Group - Major Station Systems
C71.0111959-11-0132.03 MB6A Key Telephone System - Identification
C71.0111961-09-0142.95 MB6A Key Telephone System - Identification
C71.011PT A1961-05-01C45.63 KB6A Key Telephone System - Identification
C71.0121961-02-0131.97 MB6A Key Telephone System - Selector Only - Connections
C71.0131961-02-0131.32 MB6A Key Telephone System - Single-Talking Link - Connections
C71.0141961-02-0142.98 MB6A Key Telephone System - Two-Talking Link - Connections
C71.014PT A1961-05-01C47.40 KB6A Key Telephone System - Two Talking Link - Connections
C71.015.001961-07-011189.25 KB6A Key Telephone System - Holding Arrangement for 6A Stations Using 1A or 1A1 Line and Signaling Circuits
C71.0171961-08-0121.59 MB6A Key Telephone System - Selector Only Arrangement - Maintenance
C71.0181961-09-0128.69 MB6A Key Telephone System - Single-Talking Link Arrangement - Maintenance
C71.0191961-12-0123.30 MB6A Key Telephone System - Two-Talking Link Arrangement - Maintenance
C71.101.001960-01-0111.07 MB100 Key Equipment - Identification
C71.101.011960-01-011280.14 KB100 Key Equipment - Installation
C71.101.021960-01-011322.09 KB100 Key Equipment - Maintenance
C71.101.031960-01-011115.38 KB100 Key Equipment - Connections
C71.1111961-07-0123.46 MB101A and 101B Key Equipments - Identification
C71.1121959-07-0113.33 MB101A and 101B Key Equipments - Installation
C71.1131960-10-0133.81 MB101A and 101B Key Equipments - Maintenance
C71.1141959-08-011978.37 KB101A and 101B Key Equipments - Connections
C71.1831959-07-011759.43 KB102A Key Equipment - Description and Use
C71.2631959-07-011312.96 KB110A Key Equipment - Description, Installation and Maintenance
C71.3031959-06-0112.45 MB111A Key Equipment - Description and Use
C71.3311957-12-0112.63 MB1A and 1A1 Key Telephone Systems - Identification
C71.3311961-11-0131.79 MB1A and 1A1 Key Telephone Systems - Identification
C71.3321961-02-0137.69 MB1A and 1A1 Key Telephone Systems - Installation
C71.3331961-11-0121.52 MB1A and 1A1 Key Telephone Systems - Maintenance
C71.3351960-03-01178.14 KB1A Key Telephone System - Connection Data - List of Sections
C71.336.001960-03-01131.50 KB1A Key Telephone System - Connections - Introduction
C71.336.011960-03-011102.37 KB1A Key Telephone System - Power Supply Connections
C71.336.021960-03-01140.48 KB1A and 1B Key Telephone Units - Hold Circuits - Connections
C71.336.031961-05-01263.67 KB2A, 12B, and 31A Key Telephone Units - Battery Feed Circuits - 23A Key Telephone Unit - Noise Suppression Circuit - Connections
C71.336.041960-03-01128.98 KB3A Key Telephone Unit - Intercommunicating Signaling Circuit - Connections
C71.336.051960-03-01131.69 KB5A Key Telephone Unit - Auxiliary Hold Circuit - Connections
C71.336.061960-03-01135.14 KB6B and 6C Key Telephone Units - Supervisory and Busy Lamp Circuits - Connections
C71.336.071960-03-01133.27 KB5A Key Telephone Unit - Private Line Circuit - Connections
C71.336.081960-03-01131.76 KB10A Key Telephone Unit - Automatic Exclusion Circuit - Connections
C71.336.091960-03-01143.50 KB13C Key Telephone Unit - 2-Way Intercommunicating Circuit - Connections
C71.336.101960-03-011109.21 KB14A and 15D Key Telephone Units - Ringup Relay Circuit - Connections
C71.336.111960-03-01145.43 KB16A and 20A Key Telephone Units - Common Auible Control Circuits - Connections
C71.336.121960-03-01131.06 KB17B Key Telephone Unit - Switching Relay Circuit - Connections
C71.336.131960-03-01145.63 KB18D and 18E Key Telephone Units - Busy and Supervisory Relay Circuits - Connections
C71.336.141960-03-01131.28 KB19B Key Telephone Unit - Lamp Flashing Circuit - Connections
C71.336.151960-03-01152.15 KB22-Type Key Telephone Units - DC Lamp Resistance Circuit - Connections
C71.336.161960-03-011142.20 KB25B Key Telephone Unit - Automatic Cutoff Control Circuit - 26B Key Telephone Unit - Automatic Cutoff Control Circuit - 29A Key Telephone Unit - Cut Through Relay Circuit - Connections
C71.336.171960-03-01132.01 KB30A Key Telephone Unit - Time-Out Circuit - Connections
C71.336.181960-03-01141.26 KB33A Key Telephone Unit - Lamp Wink Circuit - Connections
C71.336.191960-03-01141.26 KBLamp Relay Circuits for Connecting Systems Having Separate Power Supplies - Connections
C71.336.201960-03-011514.00 KB50-Type Key Telephone Units (Strip Mounted) - Connections
C71.336.211960-03-011130.10 KB56A Key Telephone Unit - Private Line Circuit - Connections
C71.336.221961-01-01159.35 KB34A Key Telephone Unit - Make-Busy Lamp and Key Circit for Central Office or PBX Lines - Connections
C71.3371960-11-013124.05 KB1A1 Key Telephone System - Apparatus and Station Connection Data - List of Sections
C71.3381957-05-01195.47 KB1A1 Key Telephone System (Connection Data) - Introduction
C71.3391962-02-013206.74 KB1A1 Key Telephone System - Power Supply Connections to Key Telephone Units - Connection Data
C71.3401959-04-013449.00 KB1A1 Key Telephone System - Line Pickup, Holding, Line and Busy Lamps, and Common Audible Signal Using 202A and/or 202B and 209A Key Telephone Units - Connection Data
C71.341.11961-01-013340.25 KB1A1 Key Telephone System - Line Pickup, Holding, Line and Busy Lamps, and Common Audible Signal - 202A, B, C, D; and 212A Key Telephone Units - Connections
C71.341.21962-02-013189.34 KB1A1 Key Telephone System - Audible Signal Control - Interrupted Audible Signal Using 16A or 211A Key Telephone Units - Connections
C71.341.31961-09-0131.40 MB1A1 Key Telephone System - Central Office or PBX Line Circuits and Common Equipment - 202C/D, 230A/B, 238A, 239A, 232A/B, 209A, 212A Key Telephone Units - Connections
C71.341.41960-02-011354.94 KB1A1 Key Telephone System - 233A Key Telephone Unit - CO or PBX Line Circuit (Ten Circuits) - Connections
C71.342.11959-06-013417.78 KB1A1 Key Telephone System - Dial Selective Intercommunicating Circuit with Flashing Line Lamps Using 207A, 207B, or 207C; 208A; and 209A or 212A Key Telephone Units - Connection Data
C71.342.21959-06-013140.00 KB1A1 Key Telephone System - Dial Selective Intercommunicating Lines, Busy Lamps, and Audible Signal Using 207A, 207B, or 207C Key Telephone Unit - Connection Data
C71.342.31957-06-011133.61 KB1A1 Key Telephone System - Intercommunicating Lines Using 31A or 211A Key Telephone Units (Connection Data)
C71.3431961-03-013329.10 KB1A1 Key Telephone System - Lamp Wink Circuit Using 202A, B, C, D; 230A, B; with 209A and 210A Key Telephone Units - Connections
C71.3441961-03-013157.21 KB1A1 Key Telephone System - Lamp Wink Circuit Using 202A, B, C, D; 230A, B; with 210A and 212A Key Telephone Units - Connections
C71.3451959-02-013241.84 KB1A1 Key Telephone System - Cut Through and Control Circuit for Automatic Cutoff Using 26B and 29A Key Telephone Units - Connection Data
C71.345.011960-04-01151.70 KB1A1 Key Telephone System - Manual Cutoff Circuit Using 29A Key Telephone Unit - Connection Data
C71.3461958-05-012648.92 KB1A1 Key Telephone System - Station Connections Using 440 and 460 Series Key Telephone Sets - Connection Data
C71.3461960-06-0136.87 MBKey Telephone Sets - 440 and 460 Series - Common Battery - Connections
C71.3471959-07-0136.02 MBKey Telephone Sets - 540 and 560 Series - Common Battery - Connections
C71.347.001961-05-0115.62 MBTelephone Sets - 540 and 560 Series - Common Battery - Connections
C71.347.011961-04-012446.42 KBTelephone Sets - 564HDR - Common Battery - Connections
C71.347.021961-07-012493.63 KBKey Telephone Sets - 565HDR - Common Battery - Connections
C71.347.021962-03-0133.05 MBKey Telephone Sets - 565HDR - Common Battery - Connections
C71.347.031961-07-012475.90 KBKey Telephone Sets - 565LDR - Common Battery - Connections
C71.347.031962-03-0133.26 MBKey Telephone Sets - 565LDR - Common Battery - Connections
C71.348.001960-01-0111.42 MBSeparately Mounted Keys - 6021, 6027, 6028, 6040, and 6041 Types - Connections
C71.348.011962-02-013942.21 KBSeparately Mounted Keys - 6050 and 6051 Types - Connections
C71.349.11957-06-011232.85 KB1A1 Key Telephone System - Signal Key and Buzzer Circuits (Connection Data)
C71.349.11958-06-012171.19 KB1A1 Key Telephone System - Signal Key and Buzzer Circuits - Connection Data
C71.349.21957-06-011456.75 KB1A1 Key Telephone System - Tie and Station Lines - 203A Automatic Tie Line Unit - 204A Ringdown Tie Line Unit - 205A Station Line Unit (Connection Data)
C71.349.21962-05-012483.41 KB1A1 Key Telephone System - Tie and Station Lines - 203A Automatic Tie Line Unit, 204A Ringdown Tie Line Unit, 205A Station Line Unit - Connections and Maintenance
C71.349.31957-06-01197.02 KB1A1 Key Telephone System - Lamp Resistor Units Located at Station (Connection Data)
C71.5011958-08-0111.04 MBAudible and Visual Signaling Using 227A Key Telephone Unit
C71.501A1961-05-01159.96 KBSelective Signaling - Audible Signal Circuits - Key Telephone Systems 1A - 1A1 - 6A
C71.501C1962-06-01A275.07 KBSelective Signaling - Audible Signal Circuit
C71.5021961-08-0121.20 MB232A or B Key Telephone Unit - Electromechanical Interrupter and Battery Feed Unit
C71.5031959-11-0111.15 MBUniversal Line Unit - Key Telephone Systems 1A, 1A1 - Key Equipments 100, 101A, 101B, 102A Using 213B Key Telephone Unit
C71.504.001962-06-0126.16 MBStation Line Concentrators - 235A and 236A Key Telephone Units - Identification and Connections
C71.5051962-03-0131.31 MB1A and 1A1 Key Telephone Systems - Bridging Circuit for Conferencing on Two PBX Lines - 237A and B Key Telephone Units
C71.5071963-10-011678.43 KB259A Key Telephone Unit
C71.511.001961-11-011154.74 KBPackaged Key Telephone Units - 1A1 and 6A - General Description
C71.511.011961-08-0121.56 MB200F-Type Key Telephone Units
C71.511.021961-08-0121.49 MB200G-Type Key Telephone Units
C71.511.031961-09-0132.10 MB200H-Type Key Telephone Units
C71.511.051961-07-0121.55 MB200K-Type Key Telephone Units
C71.512.001962-06-0113.93 MBKey Service Units - 300, 301, 302, 310, and 311 Types - Identification and Description
C71.512.011961-12-011927.23 KBKey Service Units - 300, 301, and 302 Types - Connections and Maintenance
C71.512.021963-02-0123.83 MBKey Service Units - 310- and 311-Type - Connections and Maintenance
C71.520.001963-03-012889.60 KBKey Service Units - 501 and 502 Types - Indentification and Installation
C71.520.011963-01-011918.31 KBKey Service Units - 501 and 502 Types - Connections
C71.520.501963-10-0112.76 MBKey Service Units - 550- and 551-Types - Identification and Installation
C71.520.751963-09-0111.30 MBPanels - 583 and 584 Types - Identification and Installation
C71.553.001960-02-011425.45 KBCode Calling Systems - 1A and 1B - Description and Use
C71.553.011960-02-011310.82 KBCode Calling Systems - 1A and 1B - Maintenance
C71.553.021960-02-011204.40 KBCode Calling Systems - 1A and 1B - Connections
C71.8081959-08-012116.94 KBSC-2 Supervisory Control System - Signaling Circuit - Maintenance
C71.830.11959-06-0112.11 MB600/1500-Cycle Selective Signaling Equipment For 4-Wire Private Lines - Description
C71.830.21959-08-011280.86 KB600/1500-Cycle Selective Signaling Equipment For 4-Wire Private Lines - Installation
C71.830.31959-07-0111.51 MB600/1500-Cycle Selective Signaling For 4-Wire Lines Terminating In Stations, Key Equipments, and PBXs - Maintenance
C71.830.41959-06-011725.18 KBRight-Of-Way Companies (ROW) - Typical Equipment Layouts Of 600/1500-Cycle Selective Signaling Equipment
C71.8341957-08-0114.02 MB2-Wire and 4-Wire Private Line Station Circuit
C71.8341958-10-01229.81 KB2-Wire and 4-Wire Private Line Station Circuit
C71.834.11959-07-0113.02 MBPrivate Line Telephone Service - Multistation Systems
C71.834.21959-07-0111.25 MBMultistation Private Line Telephone Circuits For The Federal Aeronautics Administration
C71.834.9PT1960-01-01A659.46 KB4-Wire Stations - Description, Supplies, and Installation
C71.835.001963-01-0123.34 MBKey Telephone Systems - Station Arrangement for 2- and 4-Wire No. 5 Crossbar Central Office Lines - Identification
C71.835.011961-05-0111.07 MBKey Telephone Systems - Station Arrangement for 2- and 4-Wire No. 5 Crossbar Central Office Lines - Connections
C71.861.001962-06-0115.33 MBSwitching System No. 400 - Identification
C71.861.011962-05-0111.14 MBSwitching System No. 400 - Installation
C71.861.021962-06-01110.57 MBSwitching System No. 400 - Alarm Circuit - Connections and Maintenance
C71.861.101962-04-011115.51 KBSwitching System No. 400 - Alarm Circuit - Operation Tests
C71.861.111962-04-011162.07 KBSwitching System No. 400 - Key Telephone Line and Add-On Circuit - Operating Tests
C71.861.121962-04-011314.12 KBSwitching System No. 400 - Line, Link, and Marker Circuits - Operation Tests
C71.861.131962-04-011107.96 KBSwitching System No. 400 - Junctor Circuits - Operation Tests
C71.861.141962-04-011226.03 KBSwitching System No. 400 - Dial Pulse Register Circuits - Operation Tests
C71.861.151962-04-01140.52 KBSwitching System No. 400 - Busy-Tone Trunk - Operation Tests
C71.861.161962-04-011185.77 KBSwitching System No. 400 - Call Progress Indicator Set - Operating Methods
C71.905.01PT1960-02-01A192.81 KBPrivate Line Equipment No. 51 - Description and Limitations
C71.905.02PT1960-02-01A138.00 KBPrivate Line Equipment No. 51 - Supplies
C71.905.03PT1960-02-01A141.50 KBPrivate Line Equipment No. 51 - Installation
C71.909PT1957-01-01A465.75 KBService-Observing Arrangements Using Key Equipment for Telephone Company Business Offices - Description and Use
C71.911.01PT1961-06-01A288.11 KBStation Equipment - Manual Selective Exclusion Key Associated with Two or More Lines (Drawing K-4098) - 1A or 1A1 Key Telephone Systems