Installation guide

CIB 2871
(151A) MUSIC-ON-HOLD/PAGING CARTRIDGE TYPE II (6102)
This cartridge (Figure 1) is intended for use
with the communications system, and pro-
vides three functions:
When properly connected to a
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user-provided 2-watt, 8-ohm mu-
sic source, it provides music to
outside callers who are placed on
HOLD.
When properly connected to a
loudspeaker paging system, it per-
mits users to make paging an-
nouncements over the loud-
speaker from their voice termi-
nals.
It can also provide background
music over the loudspeaker pag-
ing system.
3.
4.
Figure 1
“T” and “R” Terminals
The “T” and “R” terminals on the car-
tridge connect to the “telephone” input on
your paging system. The connection allows
you to access the paging system via the in-
tercom from any voice terminal. The “T”
and “R” terminals are a 600-ohm, dry bal-
anced output; therefore, it is not critical
which of the two terminals on the paging
unit is connected to “T” and which is con-
nected to “R” (dc-offset voltage is as-
sumed to be 0 volts).
Paging Signal Switch
The “Paging Signal” switch provides the
following options:
ON: When switched to the “ON”
position, all paging announce-
ments are preceded by a tone.
1.
2.
OFF: No tone precedes the pag-
ing announcement over the loud-
speakers.
Control Terminals
The “1” and “2” terminals on the car-
tridge can be used for signaling the paging
system when a page is in progress (for ex-
ample, to turn off background music). The
“1” and “2” terminals are switched con-
tacts that are normally open but become
closed when a page is initiated. A maximum
of 40 volts, 0.25 amperes can be applied
across the terminals.
Background Music Volume Con-
trol
This control is used to adjust the volume of
your background music. Turning the screw
clockwise increases the volume, turning it
counterclockwise decreases the volume.
Note: You may also have volume
controls on your speakers and
paging system.
Music Terminals
These terminals when properly connected
to a music source, allow you to have music
on hold, and if desired, background music
on your paging system. “M1” and “M2”
are a dry balanced 8-ohm input; therefore,
it is not critical which terminal on the mu-
sic source is connected to “M1” and which
is connected to “M2” (the dc-offset is as-
sumed to be 0 volts). A maximum of 0.3
volts peak to peak can be applied across
these terminals before the signal is dis-
torted. Protection is provided for larger sig-
nals.
Music-on-Hold Volume Control
This control is used to adjust the volume of
your music on hold. Turning the screw
clockwise increases the volume and turning
it counterclockwise decreases the volume.
INSTALLATION INSTRUCTIONS
Warning: Unplug the control unit
from the ac outlet and
make sure the control unit
green light goes OFF be-
fore inserting or removing
the cartridge.
Installing the Cartridge
Open the control unit door.
Grasp the plastic cover plate in the
middle right section of the control
and pull to remove it as shown in Fig-
unit panel marked Cartridge Type II
ure 2.
Figure 2
Slide the cartridge into the control
unit cartridge slot marked Cartridge
Type II as shown in Figure 3.
Figure 3
Push the cartridge slowly and steadily
until the ridge on the front of the car-
tridge is aligned with the front panel
of the control unit.
Connecting Your Music Source
Note:
This section explains how to
connect your music source to
the 151A Cartridge by running
wire (18, 22, or 24 gauge)
Equipment manufactured by AT&T Technologies in the U.S.A.
PRINTED IN U.S.A.