| Section
| Date
| Issue
| Size
| Title
|
| 534-000-000 | 1980-11-01 | 45 | 125.31 KB | Numerical Index - Division 534 - Sections Applying to More Than One PBX Series - 500, 600, 700, and 800 Series - Manual and Dial PBX |
| 534-000-000 | 1988-12-01 | 48 | 251.97 KB | Numerical Index - Division 534 - Sections Applying to More Than One PBX Series - 500, 600, 700, and 800 Series - Manual and Dial PBX |
| 534-000-000PN A | 1980-09-01 | Z | 94.86 KB | Pacific Northwest Bell - Numerical Index - Division 534 - Sections Applying to More Than One PBX Series - 500, 600, 700, and 800 Series - Manual and Dial PBX |
| 534-364-300 | 1977-12-01 | 1 | 1.34 MB | J59204 Electronic Tie Trunk (SD-1E500-01 and SD-1E500-02) - Trouble-Locating Procedures and Diagnostic Tests - PBX Systems |
| 534-400-110 | 1929-02-27 | 1 | 2.22 MB | Fundamental Circuit and Operating Features - Common Manual PBX Switchboards |
| 534-413-211 | 1978-08-01 | 1 | 894.88 KB | Visually Impaired Attendant Service - 990A Light Sensor and 87A Control Unit Used with PBX Consoles - Description, Installation, and Method of Operation |
| 534-413-502 | 1978-08-01 | 1 | 1.30 MB | Visually Impaired Attendant Service - 990A Light Sensor and 87A Control Unit Used with PBX Consoles - Maintenance and Trouble Locating Procedures |
| 534-500-207 | 1961-05-01 | 4 | 227.03 KB | 9A Handset Hangers - Identification and Installation - Nonmultiple PBX Switchboards |
| 534-500-901PT | 1971-10-01 | A | 143.14 KB | WESCOM 7371 Dial Long Line Repeater Ground Start Module - Identification, Installation, and Testing |
| 534-500-902PT | 1971-10-01 | A | 268.62 KB | WESCOM 7375 Dial Long Line Repeater Module - Identification, Installation, and Testing |
| 534-500-903PT | 1974-08-01 | A | 1.72 MB | WESCOM 7376 Loop Start/Ground Start Signaling Repeater |
| 534-500-950PT | 1972-04-01 | B | 2.84 MB | "TELEPATCHER" - Identification, Installation, and Maintenance |
| 534-505-921PT | 1953-02-01 | A | 79.95 KB | Trunk Availability Control Circuit (Trunk Make Busy Ckt.) |
| 534-505-922PT | 1951-03-01 | B | 56.11 KB | Cord Type P.B.X.'s - Arrangement for Grouping Two Lines on a Single Night Connection |
| 534-565-200 | 1977-06-01 | 1 | 9.78 MB | Remote Access Unit SD-1E502-01 - Description, Installation, and Maintenance Information |