Patton electronic SmartNode 4110 Series manual Enabling the session timer Optional

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

Step	Command	Purpose
1	[node](if-sip)[if-name]#[no] session-timer	Enables/Disables the session timer with a
	seconds	refresh period of the specified number of sec-
		onds.
		Default: disabled

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

Step

1

Command	Purpose
[node](if-sip)[if-name]#[no] penalty-box	Enables/Disables the SIP penalty box feature.
	Default: disabled

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] new-session-	Enables/disables creation of a new session
	after-redirect	after a redirect response.
		Default: disabled

SIP interface configuration task list 454