Polycom TransTalk 9000-Series - Manual (Page 150)

Feature Reference
5-40
Using
To turn Background Music on:
1. From a system phone with a speaker, press the programmed button or
press f 1 9 .
If the phone is idle, you hear Background Music. If the Background Music
button has lights, the green light turns on.
2. To adjust the volume of Background Music, use the phone’s volume control
buttons while listening to the Background Music.
To turn Background Music off:
Press the programmed button or press f 1 9 again.
If the Background Music button has lights, the green light turns off.