Local Administrative Options
Disable/Enable Automatic Gain Control
Use the following procedure to turn automatic gain control for the handset, headset, and/or the Speaker on or off.
1.While the telephone is
Mute 2 4 2 # (Mute A G C #)
Note:
Press the Mute button momentarily. Do not press this button while pressing other keys/buttons. The 4630/4630SW IP Telephones and the 4690 IP Conference Telephone do not have a dedicated Hold button. For all other 4600 Series IP Telephones, pressing the Hold button instead of the Mute button also works.
2.After entry of the command sequence, all telephones except the 4601 display the following, based on the current value of the system value AGCHAND:
If AGCHAND = 1:
If AGCHAND = 0:
Handset AGC=on 0=off #=OK
Handset AGC=off 1=on #=OK
3.To change the AGC Handset value from On to Off, press 0. To change the AGC Handset value from Off to On, press 1.
If the telephone has a Headset interface one of the following displays, based on the current value of the system value AGCHEAD:
If AGCHEAD = 1:
If AGCHEAD = 0:
Headset AGC=on 0=off #=OK
Headset AGC=off 1=on #=OK
If the telephone does not have a headset interface, proceed to Step 5.
4.To change the AGC Headset value from On to Off, press 0. To change the AGC Headset value from Off to On, press 1.
One of the following displays, based on the current value of the system value AGCSPKR:
If AGCSPKR = 1:
If AGCSPKR = 0:
Speaker AGC=on 0=off #=OK
Speaker AGC=off 1=on #=OK
58 4600 Series IP Telephone Installation Guide