[SR-Users] Keeping transactions in standby till future events

[Alex Balashov]

There is no support for this.  Kamailio in its proxy role (the role 
you are invoking) is pretty much event-driven, in the sense that it's 
processing is real-time and correlated to the receipt of messages to 
be forwarded.  It is externally stimulated into action.

Also, it would be quite problematic from the perspective of SIP 
protocol mechanics.  If you do not even send 100 Trying, the sending 
UAC will retransmit the INVITE, and/or eventually assume your proxy is 
down.  If you do send 100 Trying but do not follow up, other timers 
awaiting final positive or negative replies kick in and also expire.

-- 
Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
Atlanta, GA 30303
Tel: +1-678-954-0670
Fax: +1-404-961-1892
Web: http://www.evaristesys.com/