Version 6.6 719 October 2014
Installation & Operation Manual 42. Stand-Alone Survivability (SAS) Application
SIP SAS Parameters
Parameter
Name
Type
Provisioning
Type
Description
Enable
Record-Route
Enum
Enabled, Disable
Instant Determines whether the device's SAS
application adds the SIP Record-Route
header to SIP requests. This ensures that
SIP messages traverse the device's SAS
agent by including the SAS IP address in
the Record-Route header.
[0] Disable (default)
[1] Enable
The Record-Route header is inserted in a
request by a SAS proxy to force future
requests in the dialog session to be routed
through the SAS agent. Each traversed
proxy in the path can insert this header,
causing all future dialogs in the session to
pass through it as well.
When this feature is enabled, the SIP
Record-Route header includes the URI "lr"
parameter. The presence of this
parameter indicates loose routing; the lack
of 'lt' indicates strict routing. For example:
Loose routing: Record-Route:
<sip:server10.biloxi.com;lr
>
Strict routing: Record-Route:
<sip:bigbox3.site3.atlanta.com
>
SAS Proxy Set Integer
0 - 32
Instant Determines the Proxy Set used in SAS
Normal mode to forward REGISTER and
INVITE requests from users that are
served by the SAS application.
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