Chapter 4 - Terminals and Optional Equipment
Chapter 4 4 - 41
SECTION 4-14
MUSIC SOURCES
4.14.1 Music on Hold
The system can provide Music on Hold from either an internally synthesized source on the CCPU or from an
external source. The external MOH can be a tuner, tape deck, CD player, etc. The settings in Program 10-
04-01 and 14-08-01 determine whether the source for MOH is internal or external (refer to the Software
Manual for further details).
In addition to a connector on the CCPU, the 2PGDAD modules also provide connections for external MOH
sources. When using external music sources for external MOH, programming determines the MOH source
for each trunk. Refer to Music on Hold in the Software Manual for more details.
The CCPU provides a dry relay that activates when a call is placed on Hold. When an external MOH source
is connected to the MOH relay and a call is placed on Hold, the MOH relay is activated. This allows an
external relay sensor/power supply to turn on the MOH source.
This arrangement allows the MOH source (e.g., a tape deck) to run only when a call is placed on Hold. The
maximum applied voltage for the relay is 24vDC at .5A (the relays are normally open and close when a call is
put on hold).
4.14.2 Installing External Music on Hold
1. Connecting to the CCPU:
Connect an RCA line from the CN8 or CN9 connector on the CCPU to the appropriate location on the
extension cross-connect block.
2. Connect the two-conductor station cable from the cross-connect block to the external music source.
3. Install bridging clips as required.
OR
1. Connecting to the 2PGDAD Module:
Make sure the jumper in the 2PGDAD module for the channel is set correctly. (Refer to Figure 4-4
JUMPER SETTINGS on page 4-5).
2. If a line cord was not previously connected to the 2PGDAD, complete Steps 3-6. Otherwise, skip to Step 7.
3. Install a modular jack for each 2PGDAD module. For each module, run one-pair 24 AWG station cable
from the cross-connect block to a modular jack. Ground the unused pair.
4. Terminate the extension leads to GRN/RED of the modular jack. Terminate the unused leads to the jack.
5. Install bridging clips as required.
6. Plug a modular line cord from the mod jack to the CN1 connector on the 2PGDAD module.
7. Connect an RCA jack to the audio output(s) on the back of the 2PGDAD module.
8. The opposite end of this cable is connected to the external music source either directly or by connecting
to the cross-connect block where the music source is connected.
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