Replacing Contact Header For Sip Messages - AudioCodes Mediant 3000 User Manual

SIP User's Manual

20.2.5.7 Replacing Contact Header for SIP Messages

You can configure SAS to change the SIP Contact header so that it points to the SAS host.
Therefore, this ensures that in the message, the top-most SIP Via header and the Contact
header point to the same host.
Notes:
Currently, this feature can only be configured using the SASEnableContactReplace ini file
parameter.

[0] (default): Disable - when relaying requests, SAS adds a new Via header (with the
IP address of the SAS application) as the top-most Via header and retains the original
Contact header. Thus, the top-most Via header and the Contact header point to
different hosts.

[1]: Enable - SAS changes the Contact header so that it points to the SAS host and
therefore, the top-most Via header and the Contact header point to the same host.
Version 6.4
•
This feature is applicable only to SAS outbound mode.
•
The device may become overloaded if this feature is enabled, as all
incoming SIP dialog requests traverse the SAS application.
20. Stand-Alone Survivability (SAS) Application
467 November 2011