| Section
| Date
| Issue
| Size
| Title
|
| 852-000-000 | 1982-05-01 | 33 | 89.15 KB | Numerical Index - Division 852 - Exchange Area and Operator Services Transmission |
| 852-220-100 | 1952-05-01 | 1 | 3.01 MB | 500 Series Combined Telephone Sets - General Description |
| 852-220-101 | 1952-05-01 | 1 | 2.25 MB | 500 Series Combined Telephone Sets - Transmission Performance - A, B, J, and K Series |
| 852-220-102 | 1956-10-01 | 2 | 5.20 MB | 500 Series Combined Telephone Sets - Transmission Performance - C and D Series |
| 852-400-010 | 1979-10-01 | 1 | 210.99 KB | Through and Terminal Balance - Office Certification for Operator and Attendant Services Systems |
| 852-404-100 | 1982-05-01 | 4 | 4.49 MB | Traffic Service Position System No. 1 and No. 1B - Transmission Plan and Transmission Engineering Considerations |
| 852-404-102 | 1979-12-01 | 1 | 1.06 MB | Traffic Service Position System No. 1 - Generic 1T8 Features - Transmission Engineering Considerations |
| 852-405-101 | 1980-08-01 | 1 | 919.12 KB | Automatic Intercept System - Extended Range - Transmission Considerations |
| 852-408-101 | 1979-10-01 | 1 | 598.84 KB | No. 1 Trunk Concentrator - Transmission Engineering Considerations |
| 852-520-100 | 1963-05-01 | 1 | 563.77 KB | Announcement Systems - General Transmission Design Considerations |
| 852-521-100 | 1934-08-01 | 1 | 883.80 KB | Time Announcement System - Preliminary Notes on Transmission Features |
| 852-521-100 A | 1952-09-01 | 4 | 525.57 KB | Time Announcement Systems |
| 852-522-100 | 1939-09-01 | 1 | 1.27 MB | Subscriber-Operated Time Announcement Systems - Announcement Systems No. 2B and 2C |
| 852-523-100 | 1963-05-01 | 2 | 524.32 KB | 3A Announcement System - Transmission Design Considerations |
| 852-524-100 | 1952-01-01 | 1 | 437.77 KB | 4A Time Announcement System |
| 852-524-100 A | 1952-09-01 | 1 | 47.92 KB | 4A Time Announcement System |
| 852-525-100 | 1966-01-01 | 1 | 253.17 KB | Intercept Announcement Systems - Layout Features |
| 852-526-100 | 1962-12-01 | 2 | 1.00 MB | 8A Announcement System |
| 852-527-100 | 1963-12-01 | 2 | 414.37 KB | 9A Announcement System |
| 852-528-100 | 1963-11-01 | 1 | 2.16 MB | 11A Announcement System |
| 852-530-100 | 1965-02-01 | 1 | 308.16 KB | Emergency Announcement System |
| 852-552-100 | 1980-01-01 | 2 | 426.28 KB | Voice Storage System and Mass Announcement Service - Transmission Engineering Considerations |