Avaya LU250WAMP User Manual

Figure 4: Wiring for TEL Input

Page 6 of 12

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.

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.

Telephone Paging Amplifier

BGM

IN

PAGING TIME

VOX DELAY

TONE VOL.

MIN              MAX

MIN              MAX

MIN              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

ON

OFF

MODE

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

ALC

TEL VOLUME

MIC VOLUME