Adding An External Pager (Paging System); Adding Loud Bell Control Or Gate Control - Comdial DX-80 Installation And Maintenance Manual

5. Locate CPM the "MC1" and "MC2" connector jacks on the CPM.
6. Using an eighth-inch mini plug, connect the output of the external music source to
the appropriate MC1 or 2 connector. (At default MC1 is used for Music On Hold.)
This is easily accomplished using a prefabricated mini-plug to mini-plug cable
available at Radio Shack.
7. Adjust the music volume level at the external music source. When adjusting the music for Music On Hold,
place a call into the system on one of the CO Lines. Place this call on hold so that the external music source
is heard by the calling party (you). Adjust the volume level of the external music source until a desirable level
is reached. (Background Music is then adjusted at the telephone using the instrument volume control.)

Adding an External Pager (paging system)

One port is provided at the CPM of the DX-80 system for use with external paging system apparatus. When DX-80
users dial the external pager code ("777" at default) or dial the Tenant Group All Page code ("400" at default), voice
announcements can be made over the external paging equipment.
The DX-80 External Page port does not provide any amplification.
Interface at the amplifier should be matched to approximately 600
ohms for the best performance.
External Pager Installation Procedure
1. Remove the KSU cover (four screws at each corner) of
KSU1.
2. Connect grounded wrist strap to a suitable earth ground. (If
a grounded wrist strap is not available, bleed any static
charge from your body before touching circuit modules by
touching the gold-painted surface of the inside of the KSU
cabinet. If the KSU is properly grounded this will
momentarily discharge static electricity from your body.
NOTE: A GROUNDED WRIST STRAP IS THE BEST METHOD OF ASSURING THAT STATIC
ELECTRICITY DOES NOT DAMAGE CIRCUIT MODULES.)
3. Locate the CPM and "PAGE" connector jack on the CPM.
4. Using an eighth-inch mini plug, connect the DX-80 Page port to the external
amplifier input.
5. Adjust the voice volume level at the external paging amplifier. When adjusting the volume level, dial access
to the External Pager port at any DX-80 telephone ("777"). Then adjust the volume control associated to the
amplifier input selected for this purpose.

Adding Loud Bell Control or Gate Control

One "dry-connection" is provided at the CPM of the DX-80 system for use
with external ringing devices or door opening apparatus. The DX-80 can be
programmed to activate the dry contact whenever certain CO Lines ring or
whenever the LBC code is dialed to actuate a door opener.
Loud Ringing Bell Installation Procedure
1. Remove the KSU cover (four screws at each corner) of KSU1.
2. Connect grounded wrist strap to a suitable earth ground. (If a
grounded wrist strap is not available, bleed any static charge from your body before
touching circuit modules by touching the gold-painted surface of the inside of the KSU
cabinet. If the KSU is properly grounded this will momentarily discharge static electricity
from your body. NOTE: A GROUNDED WRIST STRAP IS THE BEST METHOD OF
ASSURING THAT STATIC ELECTRICITY DOES NOT DAMAGE CIRCUIT MODULES.)
3. Locate the CPM and "BELL" connector jack on the CPM.
P7290 IMM
DX-80 I M
NSTALLATION AND AINTENANCE
2-16
M
ANUAL
CPM
External "PAGE"
connector (goes to
external amplifier)
CPM
"BELL" control connector
(wires to bell and power
supply)