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SIP interface configuration task list 454
SmartWare Software Configuration Guide 39 • SIP interface configuration
Enabling the session timer (Optional)
The gateway implements the SIP session timer feature, which is currently only defined in SIP draft standards.
The session timer feature allows a gateway to check periodically during a call, if the remote gateway is still alive
and if the call is still connected on the remote gateway. You can enable this feature using the command shown
below. If the session timer feature detects that the call is no longer connected on the remote side, it will also
drop the call locally.
Mode: Interface SIP
Enabling the SIP penalty-box feature (Optional)
The following command enables the SIP penalty-box feature, which causes a non-responsive server not to be
contacted again for the specified duration. A server will be in the penalty box for the specified time as soon as a
single transaction with that server fails.
Mode: Interface SIP
Initiating a new SIP session for redirected SIP calls (Optional)
Normally, if a SIP call is redirected to a different location by receiving a SIP 3xx response, only the request
header is replaced in the original INVITE message and the INVITE is sent to the new destination. Using the
following procedure, the SIP gateway can be forced to create a completely new session for forwarded calls.
Mode: Interface SIP
Step Command Purpose
1
[node](if-sip)[if-name]#[no] session-timer
seconds
Enables/Disables the session timer with a
refresh period of the specified number of sec-
onds.
Default: disabled
Step Command Purpose
1
[node](if-sip)[if-name]#[no] penalty-box Enables/Disables the SIP penalty box feature.
Default: disabled
Step Command Purpose
1
[node](if-sip)[if-name]#[no] new-session-
after-redirect
Enables/disables creation of a new session
after a redirect response.
Default: disabled