Bell System Practices 831 Identification, Installation, Connections, And Maintenance

BELL SYSTEM PRACTICES
AT&TCo Standard
IDENTIFICATION, INSTALLATION, CONNECTIONS, AND MAINTENANCE
1. GENERAL
This section is reissued to:
1.01
Add 831C and 2831C telephone sets
•
Add 831C and 2831C telephone set bases
•
Show 831CT and 2831CT telephone sets rated
•
MD
Show 831CT and 2831CT telephone set bases
•
rated MD
Add 832A housing
•
Add 35AF3A dial
•
Include information for ringer biasing spring
•
adjustment
2. IDENTIFICATION
Purpose
The 831-(rotary) and 2831-(TOUCH-TONE®
2.01
dial) type telephone sets are obtainable as
modular or complete desk-type, 20-button, key
telephone sets equipped to provide standard key
system features.
Application
Us e d w it h c e n t r a l o f f i c e, PBX o r
2.02
intercommunicating line circuits in 1A1, 1A2,
or 6A key telephone systems (KTS).
are not for use with 1A KTS.
It
The 831- and 2831-type telephone sets may
2.03
be used with 3- or 4-type speakerphone.
The limited number of mounting cord
conductors can place a restriction on
using these telephone sets with 3-type
speakerphone (see 3.03).
BSP S03-702-101-i06_1974-02-0l.jpg Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado
TELEPHONE SETS-831- AND 2831-TYPE
These sets
©
American Telephone and Telegraph Company, 1974
Printed in U.S.A.
Feb 04,2012 16:46:16
Fig. 1-831C Telephone Set, Assembled
Fig. 2-2831CT (MD) Telephone Set, Assembled
Ordering Guide
The 831- and 2831-type telephone set (Fig.
2.04
1 and 2) can be ordered as modular (831C
or 2831C telephone set bases) (Fig. 3 and 4) or
completely assembled (831C-* or 2831C-*) telephone
sets. To order a complete telephone set, list as
follows:
tSet, Telephone, 831C·*•
•
SECTION 503-702-101
Issue 6, February 197 4
Page 1