| Section
| Date
| Issue
| Size
| Title
|
| 212-000-000 | 1972-08-01 | 78 | 358.37 KB | Numerical Index - Division 212 - No. 4A and 4M Toll Switching Systems |
| 212-001-011 | 1980-09-01 | 4 | 223.87 KB | Equipment Test List - Decoders and Card Translators - No. 4A and 4M Toll Switching Systems |
| 212-001-012 | 1983-09-01 | 13 | 229.08 KB | Equipment Test List - Connectors and Links - No. 4A and 4M Toll Switching Systems |
| 212-001-013 | 1983-09-01 | 17 | 282.31 KB | Equipment Test List - Link Controllers and Markers - No. 4A and 4M Toll Switching Systems |
| 212-001-014 | 1983-09-01 | 16 | 1.92 MB | Equipment Test List - Senders and Registers - 4A - No. 4A and 4M Toll Switching Systems |
| 212-001-015 | 1980-09-01 | 12 | 1.24 MB | Equipment Test List - Senders and Registers - 4M - No. 4A and 4M Toll Switching Systems |
| 212-001-016 | 1983-09-01 | 16 | 244.69 KB | Equipment Test List - Traffic Administration Circuits - No. 4A and 4M Toll Switching Systems |
| 212-001-017 | 1983-09-01 | 16 | 363.39 KB | Equipment Test List - Intertoll Trunks - No. 4A and 4M Toll Switching Systems |
| 212-001-018 | 1983-09-01 | 16 | 159.27 KB | Equipment Test List - Toll Connecting Trunks - No. 4A and 4M Toll Switching Systems |
| 212-001-019 | 1983-09-01 | 14 | 103.16 KB | Equipment Test List - Transmission Trunks - No. 4A and 4M Toll Switching Systems |
| 212-001-020 | 1983-09-01 | 10 | 70.71 KB | Equipment Test List - Operator Trunks - No. 4A and 4M Toll Switching Systems |
| 212-001-021 | 1983-09-01 | 7 | 252.15 KB | Equipment Test List - Other Miscellaneous Trunks - No. 4A and 4M Toll Switching Systems |
| 212-001-022 | 1983-09-01 | 5 | 77.74 KB | Equipment Test List - Announcement Trunks - No. 4A and 4M Toll Switching Systems |
| 212-001-026 | 1983-09-01 | 4 | 70.60 KB | Equipment Test List - Miscellaneous Fuse Alarms - No. 4A and 4M Toll Switching Systems |
| 212-100-004 | 1980-11-01 | 1 | 552.99 KB | Message Routing Through Stored Program Control - Signal Transfer Point Offices |
| 212-120-901PT | 1957-08-15 | C | 708.36 KB | Translator-Card Class and Incoming- and Outgoing-Trunk Wiring Options - Nos. 4A and 4M Toll-Switching Systems |
| 212-199-901PT | 1963-05-01 | A | 171.01 KB | DART Applique Circuit PSD-68002-01 - Operation Tests |
| 212-503-101 | 1963-09-01 | 3 | 9.04 MB | Automatic Transmission Test and Control Circuit (ATTC) - Description - No. 4A and 4M Toll Switching Systems |
| 212-505-501 | 1962-03-01 | 2 | 629.41 KB | Automatic Outgoing Intertoll Trunk Test Frame - Tests - No. 4A and 4M Toll Switching Systems |
| 212-517-900PT | 1973-04-01 | A | 159.79 KB | Manual Operational Tests of Credit Card Verification System Trunks Using Test Circuit SD-68580-01 - No. 4A and 4M Toll Switching Systems |
| 212-532-501 | 1961-11-01 | 1 | 128.41 KB | Incoming Toll Connecting Trunks - Transmission and Pad Test Using Test Trunk Circuit SD-68547-01 - No. 4A and 4M Toll Switching Systems |
| 212-560-501PT A | 1978-02-01 | A | 70.24 KB | Outgoing (One-Way) Intertoll Trunk Circuit - Tests Using Test Circuit SD-68539-01 - No. 4A and 4M Toll Switching Systems |
| 212-564-501 | 1960-11-01 | 2 | 599.31 KB | Outgoing Toll Connecting Trunks - Over-All 1000-Cycle Transmission Tests - No. 4A and 4M Toll Switching Systems and No. 5 Toll Switchboards |
| 212-564-902PT | 1957-07-01 | B | 237.79 KB | Preliminary Transmission Tests - Toll Connecting Trunks Using Portable Test Hybrid Set - DE-90071-01 - No. 4A Toll Switching Systems |
| 212-564-903PT | 1955-11-30 | A | 117.27 KB | Trouble Locating Procedures - Toll Tandem Trunks - No. 4A Toll Switching System |
| 212-567-502 | 1972-07-01 | 1 | 2.82 MB | Toll Switching Trunks - Transmission Tests Using Manual Test Frame SD-68587-01 - No. 4A and 4M Toll Switching Systems |
| 212-567-503 | 1972-08-01 | 1 | 283.68 KB | Toll Switching Trunks - Miscellaneous Tests and Features Using Manual Test Frame SD-68587-01 - No. 4A and 4M Toll Switching Systems |
| 212-567-901PT | 1978-01-01 | A | 543.29 KB | Verification No-Test Trunks - Operational Tests Using (Modified) Manual Test Frame SD-68587-01 - No. 4A Toll Switching System |
| 212-567-902PT | 1978-01-01 | A | 543.51 KB | Verification No-Test Trunks - Transmission Tests Using (Modified) Manual Test Frame SD-68587-01 - No. 4A Toll Switching Systems |
| 212-571-900PT | 1978-01-01 | A | 540.91 KB | Verification No Test Trunks - Operational Tests Using (Modified) Integrated Manual Test Frame SD-99604-01 - No. 4A Toll Switching System |
| 212-571-901PT | 1978-02-01 | A | 359.24 KB | Verification No Test Trunks - Transmission Tests Using (Modified) Integrated Manual Test Frame SD-99604-01 - No. 4A Toll Switching System |
| 212-700-900PT | 1968-04-01 | A | 484.53 KB | AMA Accuracy and Route Verification Tests - No. 4A and 4M Toll Switching Systems |
| 212-700-900PT A | 1967-01-01 | A | 56.85 KB | AMA Accuracy and Route Verification Tests - No. 4A and 4M Toll Switching Systems |
| 212-800-900PT | 1974-07-01 | A | 4.19 MB | ETS Routing and Trunking Administration |
| 212-822-302 | 1981-11-01 | 2 | 802.29 KB | Point Network Control Point - 800 Service Data Base Measurements, Reports, and Data Base Updating |
| 212-826-302 | 1977-07-01 | 1 | 10.69 MB | System Evaluation Procedures - 4A Common Channel Interoffice Signaling - Switching Office |