Installing Loudspeaker Paging With Background Music - AT&T 75 Wiring Manual

66-TYPE HARDWARE

Installing Loudspeaker Paging With Background Music

Requirements
Figures 4-86 and 4-87 show the additional connections required when loudspeaker paging is
installed with background music. Refer to the installation procedures for installing
loudspeaker paging (278A adapter and 89A control unit) and music-on-hold.
Installation Using 278A Adapter
1. Connect music source to M1 and M2 terminals on 278A adapter (see Figure 4-86).
2. Adjust music source level.
Installation Using 89A Control Unit
1. Connect music source to CMS1 and CMS2 terminals on 89A Control Unit (see
Figure 4-87).
2. Adjust music source level.
Figure 4-86. Loudspeaker Paging With Background Music Connections—278A
Adapter
4-134