Avaya 555-233-128 Manuel D’Utilisation

The 4602SW+, 4610SW, 4620SW, and 4621SW IP Telephones use either H.323 or SIP 
software. These telephones come from the factory with H.323 software loaded by default. This 
section describes how to convert from H.323 to SIP software, or from SIP to H.323 software. 

There are several H.323 to SIP or SIP to H.323 conversion scenarios, and each scenario 
depends on whether the majority of your telephones are H.323 or SIP: 

●

H.323-Centric - an environment where the majority of IP telephones are and will remain 
running H.323 software, but some telephones will become SIP IP telephones. In an 
H.323-centric environment, the 46xxH323... software bundle must reside on the HTTP 
server and Communication Manager must be configured with the appropriate H.323 
parameters. To convert an individual telephone from H.323 to SIP, both the SIP 
Enablement Services (SES) server and Avaya Communication Manager (CM) must be 
configured with the appropriate SIP parameters. Any telephone in use prior to conversion 
must run Release 2.0 or greater software with a SIG parameter value of “default” (H.323). 
See 

 for conversion 

instructions. 

●

SIP-Centric - an environment where the majority of IP telephones are or will become SIP 
telephones running SIP software. In a SIP-centric environment, the 46xxSIP... software 
bundle must reside on the HTTP server and both SES and CM must be configured with the 
appropriate SIP parameters. To convert an individual telephone from SIP to H.323, Avaya 
Communication Manager (CM) must be configured with the appropriate H.323 
parameters. Any telephone in use prior to conversion must run Release 2.0 or greater 
software with a SIG parameter value of “default” (SIP). See 

 for conversion instructions. 

What makes an environment H.323 or SIP depends on the type of upgrade script files the 
environment is running (H.323 or SIP) and the Signaling Protocol Identifier (SIG) parameter 
setting. The SIG parameter has three possible values:

●

Default - either H.323 or SIP, set automatically for all telephones depending on the nature 
of files downloaded to the SES server or Communication Manager.

●

H.323 - manually set to H.323 for a specific telephone by an installer or administrator 
according to the procedures in this section. 

●

SIP - manually set to SIP for a specific telephone by an installer or administrator according 
to the procedures in this section.