Version 6.2 603 February 2011
SIP User's Manual 8. IP Telephony Capabilities
¾ To configure SAS emergency numbers:
1. Open the 'SAS Configuration' page (Configuration tab > VoIP menu > SAS > Stand
Alone Survivability).
2. In the ‘SAS Default Gateway IP' field, define the IP address and port (in the format
x.x.x.x:port) of the device (Gateway application).
Note: The port of the device is defined in the 'SIP UDP/TCP/TLS Local Port' field in
the 'SIP General Parameters' page (Configuration tab > VoIP menu > SIP
Definitions > General Parameters).
3. In the 'SAS Emergency Numbers' field, enter an emergency number in each field box.
Figure 8-118: Configuring SAS Emergency Numbers
4. Click Submit.
8.5.3.5.6 Adding SIP Record-Route Header to SIP INVITE
You can configure SAS to add the SIP Record-Route header to SIP requests (e.g. INVITE)
received from the enterprise UAs. SAS then sends the request with this header to the
proxy. The Record-Route header includes the IP address of the SAS application. This
ensures that future requests in the SIP dialog session from the proxy to the UAs are routed
through the SAS application. If not configured, future request within the dialog from the
proxy are sent directly to the UAs (and do not traverse SAS).
This feature can only be configured using the SASEnableRecordRoute ini file parameter.
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