Figure 4: Wiring for TELInput
Page 6 of 12
Wiring Connections
IMPORTANT: Before making any connections or wiring changes to the amplifier
or any equipment connected to the amplifier,make sure that the amplifier is NOT
plugged into an AC outlet.
NOTE: The amplifier does not have a power switch,so it must be unplugged in
order to turn the power off.
All signal input and control wiring is made to the terminal strip and RCA connectors
beneath the left side access cover. Loosen the two Phillips-head screws on each side
of the cover and remove it.
TEL Input and Control Pair The telephone input is a 600-ohm,dry loop, balanced input available at the T and R
terminals.It is controlled by a dry contact closure that is made between the control
terminals labeled TEL and COM.Shorting these terminals together will mute the
background music input and open the Tel page channel (see Figure 4).
NOTE: In instances where the amplifier is to be placed permanently in the Tel page
mode,a wire jumper must be installed between the TEL and COM terminals.

Input Wiring

Telephone Paging Amplifier
BGM
IN
PAGING TIMEVOX DELAYTONE VOL.
MIN MAXMIN MAXMIN MAX
Universal Paging Access Module
S5
S5
VOX ENABLE
VOX DISABLE S3
S4
PREANNOUNCE TONE
S3 S4
CONFIRMATION TONE
48VDC PWR SUPPLY S1,S2
24VDC PWR SUPPLY S1,S2
ONOFFMODE
VOL
BGM
SWITCHES
MODE
(0.1A)
(TRUNK ACCESS ONLY)
POWER SUPPLY
CONTACT CLOSURE A
PAGING OUTPUT
EXT VOX ENABLE
PHONE SYSTEM
-24/48
+24/48
COM
N.O.
PR
PT
-M
+M
R
T
CONTACT CLOSURE B
N.O. COM
PAGE PORT
INPUT
RING
TEL
TEL
BAL
MIC GND RING
CONTACT
ALC
TEL VOLUME
MIC VOLUME
+
BAL
TR
TEL MIC COM
CONTROLS
MUSIC IN BRIDGING
APHEX
R
T