System Site Specific Option Numbers - Avaya IP Office H.323 Telephone Installation Manual

2.3.2 System Site Specific Option Numbers

When requesting address settings from a DHCP server, each phone also requests additional information that the DHCP
server may have. It does this by sending a Site Specific Option Number (SSON). If the DHCP server has information
matching the SSON, that information is included in the DHCP response.
4600 and 5600 Series phones use 176 as their default SSON. 1600 and 9600 Series phones use 242 as their default
SSON. However, through the phone's own menus the
Office system for DHCP, the SSON numbers that the IP Office supports are set in the IP Office system's configuration.
The values used by the phones and supported by the IP Office system must match.
Changing the Systems SSON Settings
1. Using IP Office Manager, retrieve the configuration from the system.
2. Select System.
3. Select the LAN1 or LAN2 tab depending on which of the system's LAN interfaces you want to use to support
H.323 extensions.
4. Select the VoIP sub-tab.
5. Check that the Site Specific Option Number settings match those required for the phone being supported. The
default for 4600 and 5600 Series phones is 176. The default for 1600 and 9600 Series phones is 242.
6. If this setting needs to be changed, save the configuration back to the system.
H.323 Telephone Installation
IP Office
SSON it uses can be altered
15-601046 Issue 17e (Wednesday, November 14, 2012)
. For those phones using the IP
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