Automatic Gain Control - Avaya IP Office H323 Installation Manual

4.7 Automatic Gain Control

Automatic Gain Control (AGC) raises the volume when a caller is speaking quietly and lowers the volume when the caller
is loud. AGC can be separately switched on or off for the phone handset, headset and speaker.
The AGC settings for all H323 IP phones can also be set through the 46xxsetting.txt file. On some phones it can also be
switched on or off through the phone's user menus.
Switching automatic gain control on/off:
1. While the phone is on-hook and idle, press either MUTE 2 4 2 # (MUTE A G C #). The current AGC settings are
displayed. Note that these may vary depending on the headset/speaker support provided by the phone model.
· Handset AGC =
Press the indicated key for the required setting (0 = off and 1 = on) and then press #.
· Headset AGC =
Press the indicated key for the required setting (0 = off and 1 = on) and then press #.
· Speaker AGC =
Press the indicated key for the required setting (0 = off and 1 = on) and then press #.
2. The phone should return to it normal idle state.
H323 Phone Install
IP Office 4.2 15-601046 Issue 15b (16 July 2009)
Page 60