Bell System Practices 830 Connections page 5

BELL SYSTEM PRACTICES
AT & TCo Standard
1. GENERAL
1.01 This section contains information necessary
to connect the 832-, 833-, 2832-, or 2833-type
telephone sets to provide 4A speakerphone service.
Refer to Section 512-700-100 for detailed information
on components of the 4A speakerphone system.
1.02
This section is reissued to:
•
Revise
power unit
•
Add 108AA loudspeaker set.
1.03 Refer to Section 512-700-100 for detailed
information
speakerphone system.
1.04 The 832- and 2832-type telephone sets are
special 10-, 11-, or 13-button sets initially
designed to work with the 7 A Communication
System.
1.05 The 833- and 2833-type telephone sets are
special 20-button sets initially designed to
work with the 14A Communication System.
2. CONNECTIONS
A. 223-Type Adapter
2.01 Telephone
speakerphone system by means of a 223A
(MD) or 223D adapter which consists of the
following.
(a) Plastic housing.
(b) M16C (MD) or M16H cord for connecting to
telephone set.
Scanned by Frank Harrell, (Cowboy Frank) Castle Rock, Colorado Feb 23,2012 22:46:26
BSP S12-740-471-i06_1979-09-0S .jpg
832-, 833-, 2832-, AND 2833-TYPE TELEPHONE SETS
SPEAKERPHONE SYSTEM-4A
safety information for the 85B1
on components of
sets are connected
Not for use or disclosure outside the
Bell System except under written agreement
CONNECTIONS
(c) M2FG cord for connecting the power supply.
Note:
set, 680-type transmitter, and 85B1 power
unit plug into the connector of the M16C (MD)
or M16H cord.
After cords are installed in the proper
2.02
receptacles of the adapter, the cover must
be fastened securely to assure proper mating of
connectors.
B.
108-Type loudspeaker Set
2.03
The loudspeaker set and transmitter must
be a minimum of one foot apart and not
the 4A directly facing each other.
C. 680-Type Transmitter
2.04 The transmitter must be at least two feet
from transformer or any ac powered device.
D.
Power Supply
2.05 Power is supplied by connecting an 85B1
power unit using M2FG cord as shown in
Fig. 1 and 2.
2.06 Use an ac power outlet (not under control
of a switch) located as close as possible to
the system being installed.
to the (841050818) will be shipped with the 85B1 power
unit and should be mounted to the ac receptacle
to hold power unit securely, and to prevent accidental
loss of power.
2.07 The 85B1 power unit should be located less
than 125 feet from 108-type loudspeaker set
when using 24 gauge wire or less than 85 feet
when using 26 gauge wire.
NOTICE
P rinted in U.S.A.
SECTION 5 12-740-471
Issue 4, September 1979
Cords from the 108-type loudspeaker
A retaining clamp
Refer to Section
Page 1