| Section
| Date
| Issue
| Size
| Title
|
| 981-000-000 | 1972-02-01 | 52 | 110.98 KB | Numerical Index - Division 981 - Equipment on Customers' Premises (Special Services and Private Branch Exchanges) - General Descriptive Information |
| 981-000-000 | 1972-07-01 | 54 | 109.35 KB | Numerical Index - Division 981 - Equipment on Customers' Premises (Special Services and Private Branch Exchanges) - General Descriptive Information |
| 981-010-100 | 1969-08-01 | 1 | 2.26 MB | Private Branch Exchange Tie Trunk Circuits - General Descriptive Information |
| 981-010-100PT A | 1970-08-01 | A | 287.11 KB | Private Branch Exchange Tie Trunk Circuits - General Descriptive Information |
| 981-011-100 | 1970-04-01 | 1 | 5.15 MB | "Touch-Tone" Calling for PBX Systems - General Descriptive Information |
| 981-202-100 | 1974-02-01 | 1 | 1.82 MB | SAC Main Operating Base Turret - General Description |
| 981-210-100 | 1969-04-01 | 2 | 720.41 KB | Switching System No. 309 (AUTOVON) - General Description |
| 981-226-100 | 1962-02-01 | 2 | 4.50 MB | Emergency Reporting System - 520-Type PBX - Concentrator System - General Descriptive Information |
| 981-236-100 | 1964-05-01 | 1 | 7.65 MB | 3A Automatic Call Distributing System - General Descriptive Information |
| 981-270-100 | 1974-12-01 | 2 | 1.43 MB | PBX Access Lines (AUTOVON) - General Description |
| 981-280-100 | 1959-03-01 | 1 | 447.56 KB | 153A Amplifier for Use With Head Telephone Sets - General Descriptive Information |
| 981-280-100PT A | 1960-04-01 | A | 151.08 KB | No. 153A Amplifier for Use With Head Telephone Sets |
| 981-281-100 | 1968-01-01 | 1 | 2.23 MB | Civil Defense Warning System (CDWS) - Bell and Lights System - General Description |
| 981-300-100 | 1977-06-01 | 2 | 898.95 KB | 50A Customer Premises System - General Descriptive Information |
| 981-610-100 | 1960-12-01 | 1 | 8.05 MB | 701B and 711B Private Branch Exchanges - General Descriptive Information |
| 981-611-100 | 1965-09-01 | 2 | 11.98 MB | 701PK Priavte Branch Exchange - General Descriptive Information |
| 981-669-100 | 1968-10-01 | 2I | 2.31 MB | 761B Private Branch Exchange - General Descriptive Information |
| 981-680-100 | 1976-09-01 | 6 | 6.86 MB | 770A Private Branch Exchange - General Descriptive Information |