Artifact Details

Title

Electronic switching systems no. 1 : arranged with 2-wire features

Document Titles

Busy verify program

Document Titles

Call waiting

Document Titles

Centrex call answering from any station

Document Titles

Centrex lamp control program

Document Titles

Centrex simulated facilities program

Document Titles

Centrex trunk preemption program

Document Titles

Feature values for generic edits

Document Titles

K-level interrupt program

Document Titles

Line and trunk seizure of centrex attendant

Document Titles

LXX tandem tie line program

Document Titles

Recorded announcement machine program

Document Titles

SP operational programs

Catalog Number

102774931

Type

Text

Date

1971-09-1971-10

Publisher

Bell Telephone Laboratories, Inc.

Identifying Numbers

Publication number PR-1A164-14 Line and trunk seizure
Publication number PR-1A165-12 Trunk and code call answer
Publication number PR-1A166-14 Centrex lamp control prog.

Description

Items in this folder were originally bound. This folder contains multiple program listings. All listings are labeled "AT&TCo SPCS."

Category

Program Listing

Collection Title

Al Kossow collection

Credit

Gift of Al Kossow

Lot Number

X6512.2012