Division 312: Private Line Data Systems and Services

Section Date Issue Size Title
312-000-0001978-12-0157209.58 KBNumerical Index - Division 312 - Private Line Data Systems and Services
312-000-0001982-06-0162220.56 KBNumerical Index - Division 312 - Private Line Data Systems and Services
312-001-0111972-12-0141.56 MBEquipment Test List - Toll-Type Equipment - Private Line Telegraph Systems and Services
312-003-1001952-06-0112.73 MBOperation of the Teletypewriter, Perforator and Transmitter-Distributor
312-004-1001952-06-011428.69 KBDescription and Training Material - Operation of the Teletypewriter - 28-Type Teletypewriter
312-006-1001951-02-011625.18 KBTheory of Characteristic Distortion and Its Reduction by Equalization
312-007-1001956-09-0111.47 MBDistortion as Related to Teletypewriter Operation
312-008-5001969-11-011109.95 KBTelegraph Loops - Testing DC Loops Equipped with Continuity Indicators
312-009-1001958-08-012974.96 KBTeletypewriter Stations - Orientation and Distortion Tests
312-011-1011970-07-011199.65 KBTelegraphic Type Services - Standard Interface Specifications - Series 1000 Channels
312-011-101 A1973-05-011754.54 KBTelegraphic Type Services - Standard Interface Specifications - Series 1000 Channels
312-011-101 X11970-07-011300.67 KB30-Baud Private Line Channels - Interface Specification
312-011-101 X21970-07-011441.02 KB45-, 55-, and 75-Baud Private Line Channels - Interface Specification
312-011-101 X31970-07-0111.06 MB150-Baud Private Line Channels - Interface Specifications
312-011-5011970-07-0111.54 MBOffice Respnsibilities and Operating Procedures for Circuits Associated with CPE - Teletypewriter Switching Systems
312-011-5021970-07-01181.94 KBSeries 1000, Type 1001 Channels - Signaling, Supervisory Control and Telemetering Circuits, 0 to 15 Hz
312-012-1001969-11-011488.39 KBAlternate Full Period Teletypewriter - Private Line Services - Description and Operation
312-015-1001971-04-011350.51 KBLoss-of-Facility Alarm Circuit J70165E - Description
312-210-1001951-11-0111.21 MB144A1 Coupling Unit
312-210-1011951-11-011368.89 KB144A1 Coupling Unit
312-210-1021978-10-0121.16 MB144C1 Coupling Unit - Description and Operation
312-210-5001978-10-0131.19 MB144A1, 144B1, 144B2, and 144C1 Coupling Units - Tests and Adjustments
312-211-1001952-01-011124.22 KB344-Type Plugs for Telegraph Relay Connecting Blocks
312-215-1001973-09-013617.61 KBNegative 330-Volt Supply Circuit - Description and Operation
312-215-5001973-09-013648.36 KBNegative 330-Volt Supply Circuit - Test Procedures
312-301-5001939-12-01189.13 KB10E1 Telegraph Single Line Repeater - Tests and Adjustments
312-302-1011959-07-012204.61 KB13F1 One-Way Polar Telegraph Repeater
312-302-1021965-09-011683.20 KB13G1 One-Way Repeater (J70107)
312-306-1001951-11-011572.17 KB90C1 Loop Repeater
312-405-1001978-12-0131.23 MB96A1 Electronic Loop Repeater
312-405-3001978-06-013116.15 KB96A1 Electronic Loop Repeater - Summary of Tests
312-405-5001978-09-0131.04 MB96A1 Electronic Loop Repeater - Tests and Adjustments
312-507-5001968-04-0151.12 MB143A1 and 143A2 Regenerative Telegraph Repeaters - Tests and Adjustments
312-509-1001966-09-0111.35 MB145A1 Regenerative Repeater (Central Office Data Systems) - Description
312-700-1001974-09-01511.68 MB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Description and Operation
312-700-100 A1975-03-011518.11 KB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Description and Operation
312-700-100 A1980-12-01245.55 KB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Description and Operation
312-700-2001974-09-0111.50 MB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Installation and Connection
312-700-200 A1975-03-011463.25 KB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Installation and Connection
312-700-200 A1980-12-01235.19 KB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Installation and Connection
312-700-3001975-07-0123.36 MB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Maintenance Procedures
312-700-5001975-07-0114.33 MB43A1 Voice-Frequency Carrier Telegraph (VFCT) System (J70112-) - Test Procedures
312-700-500SW A1975-11-01A73.47 KB43A1 Carrier Telegraph Terminal
312-709-5001968-12-013249.59 KBVoice-Frequency Carrier Telegraph - A1 Level-Variation Detector - Tests and Adjustments
312-710-200 A1971-10-0112.73 MB43B1 Voice Frequency Carrier Data System - Out-of-Service and Installation Tests
312-710-5001972-08-011564.14 KB43B1 Voice Frequency Carrier Data System - Trouble Locating Tests
312-720-1001982-06-0111.21 MBMUX/VERTER - Description, Installation, Testing, Maintenance
312-800-1001975-04-0122.08 MBData Set 108B - Description
312-800-3001975-04-0123.95 MBData Set 108B - Maintenance
312-800-5001975-04-01238.45 KBData Set 108B - Test Procedures
312-801-1001967-06-0111.62 MBData Auxiliary Set 811C - Description
312-802-1001967-12-0111.73 MBData Set 109B Type - Description
312-802-3001971-02-0122.66 MBData Set 109B-Type - Maintenance Procedures
312-802-5001970-05-01130.08 KBData Set 109B-Type - Test procedures
312-804-1001968-04-0112.33 MBData Set 110C - Description
312-804-3001968-04-0111.63 MBData Set 110C - Maintenance
312-804-5001968-04-01126.90 KBData Set 110C - Test Procedures
312-805-1001972-12-0122.67 MBData Sets 108D- and 108E-Type Used With Type-3 Low-Voltage Hub Arrangements - Description
312-807-1001971-08-0112.86 MBType-3 Low-Voltage Hub - Description and Operation
312-807-2001974-07-01214.45 MBType-3 Low-Voltage Hub - Installation and Connections
312-807-5001974-08-0123.65 MBType-3 Low-Voltage Hub - Test Procedures
312-808-1001971-08-0112.03 MBData Set 109G-L1 - Description
312-809-1501972-10-011768.87 KB405-Type Data System - Supplementary Information
312-809-1801971-07-011189.61 KBData Set 405 Type - Summarizing Specification - Data Systems
312-809-2001972-09-011229.66 KB405-Type Data System - Installation and Connections
312-809-5011973-06-011367.96 KB405-Type Data System and Interface Circuit for Message Register Reporting - Test Procedure
312-810-1001972-06-0111.60 MBData Auxiliary Set 811K-L1 - Identification
312-811-100 A1980-12-01151.44 KBData Set 201D-Type - Description
312-812-1001975-07-011754.86 KBLow Speed Signaling System Using Data Set 115A - Description
312-812-1801975-06-012219.56 KBLow-Speed Signaling System Using Data Set 115A - Summarizing Specification - Data Systems
312-812-2001975-07-011476.03 KBLow Speed Signaling System Using Data Set 115A - Installation and Connections
312-812-3001975-07-011188.67 KBLow Speed Signaling System Using Data Set 115A - Maintenance
312-812-5001975-07-011172.43 KBLow Speed Signaling System Using Data Set 115A - Test Procedures