Title
Electronic switching systems no. 1 : arranged with 2-wire featuresCatalog Number
102774928Type
DocumentDescription
Items in this folder were originally bound. This folder contains multiple program listings. All listings are labeled "AT&TCo SPCS."Includes:
Teletypewriter programs
Cardwriter control programs
POB loading
Network make busy routine
Date
1971-1972Publisher
Bell Telephone Laboratories, Inc.Identifying Numbers
| Document number | PR-1A111-14 | Teletypewriter programs |
| Document number | PR-1A112-12 | Cardwriter control programs |
| Document number | PR-1A113-14 | Network make busy routine |
| Document number | PR-1A114-12 | POB loading |