Hi All,

Another problem related with INVITE and CANCEL:

A makes call to B. A cancels the call before B picks up the call. If the proxy receives the "100 trying" and "180 ringing" before A sends CANCEL, the CANCEL is sent by the proxy to B. But if the proxy only receives the "100 trying" before A sends CANCEL (a very fast cancel), The CANCEL is never sent by the proxy to B.

Regards, Toni

-----Original Message----- From: serusers-bounces@iptel.org [mailto:serusers-bounces@lists.iptel.org] On Behalf Of Marian Dumitru Sent: segunda-feira, 13 de Junho de 2005 11:24 To: Greger V. Teigre Cc: Anders Hansson; serusers@lists.iptel.org Subject: Re: [Serusers] Problem with cancel a invite

Hi Greger,

CANCEL has nothing to do with loose route - and it will never hit he loose route. The Route ser is set only when the dialog is established (200 ok); and CANCEL happens *before* the dialog completion.

The big idea with CANCEL is to take care to route it *exactly* as its INVITE.

As a hint, if you use TM, t_relay() all the time will take care to send the CANCEL to same destination as INVITE.

regards, Marian

Greger V. Teigre wrote:

Most likely you don't handle the CANCEL messages correctly. May be that you don't do proper loose route handling. Take a look at the example configs (and the Getting Started document) at http://onsip.org/ You gain much be following the logic found there, they have been verified for all kinds of situations... g-)

Anders Hansson wrote:

...

Hi all, I´ve got a problem when trying to cancel an invite. The situation: A makes a call to B (INVITE). B press the "hang up" button. An here comes the problem. From As side, everything is OK, but from Bs side, the phone is still ringing... How can a solve this problem? Anyone?

Thanks, Anders