| Section
| Date
| Issue
| Size
| Title
|
| 975-000-000 | 1980-10-01 | 13 | 45.86 KB | Numerical Index - Division 975 - Signaling Systems - General Descriptive Information |
| 975-110-100 | 1980-01-01 | 2 | 1.63 MB | Customer Loop Signals and Signaling Systems |
| 975-115-100 | 1957-06-01 | 1 | 3.10 MB | Signals and Signaling Systems Between Offices - Used in Message Telephone Service - General Descriptive Information |
| 975-120-100 | 1980-01-01 | 1 | 2.67 MB | Interoffice Signals and Signaling Systems |
| 975-215-100 | 1958-09-01 | 2 | 5.45 MB | 2400- or 2600-Cycle Single-Frequency Signaling System - General Descriptive Information - Toll Systems |
| 975-230-100 | 1975-05-01 | 2 | 1.37 MB | DX Signaling System - General Descriptive Information |
| 975-240-100 | 1980-01-01 | 3 | 3.55 MB | Type E Single-Frequency Signaling System - General Descriptive Information |