That depends on if its inbound or outbound.. you have to pay close attention to the direction and uas vs uac.

/b

On Feb 28, 2009, at 12:32 PM, seven du wrote:

Thanks Brian. I didn't know that before. But doesn't set the timer to  
0 disable it? Or can I set to a very large value say 9999999?

Anyway, if I change session-timeout, should I see the difference at  
the sip response header "Session-Expires: 120;refresher=uas" right?

Do you think it related to this?
http://www.nabble.com/change-session-timer-value-td22239490.html