Site Specific Option Number; Automatic Gain Control - Avaya IP Office 3.2 Installation Manual

IP Phone Installation Manual

Site Specific Option Number

The Site Specific Option Number (SSON) is used by H.323 IP phones to request information from a
DHCP server. This number must be matched by a similarly numbered 'option' set on the DHCP server
that define the various settings required by the phone.
WARNING
•
Do not perform this if using static addressing. Only perform this procedure if using DHCP
addressing and the DHCP option number has been changed from the normal default (176).
Setting the SSON on an IP Phone:
1. While the phone is on-hook and idle, press the following sequence: Mute 7 7 6 6 # (Mute S S O
N #). SSON= is displayed followed by the current value.
2. Enter the new setting. This must be a number between 128 and 255.
3. To cancel this procedure, press * or press # to save the new value.
Setting the SSON on IP Office:
1. In IP Office Manager, receive the system's current configuration.
2. Double-click
3. Click the Gatekeeper tab.
4. Set the SSON field to the required number.
5. Click OK.
6. Send the configuration back to the system. Select Immediate or When Free as the Reboot
Mode.

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 H.323 IP phones can also be set through the 46xxsetting.txt file, see The 46XX
Settings Script 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 Hold 2 4 2 # (Hold A G C #).
2. Handset AGC = is displayed followed by the current setting. Press the indicated key for the
required setting (0 = off and 1 = on) and then press #.
3. Headset AGC = is displayed followed by the current setting. Press the indicated key for the
required setting (0 = off and 1 = on) and then press #.
4. Speaker AGC = is displayed followed by the current setting. Press the indicated key for the
required setting (0 = off and 1 = on) and then press #.
5. The phone should return to it normal idle state.
Phone Installation Guide
IP Office 3.2
System.
15-601042 Issue 11e (27th June 2006)
Page 30