[Serusers] SER is not matching ACK Messages

[Ricardo Villa]

Same thing happens on our network (0.8.10).  I have attached a sample ngrep
of this.  (I dial #2001 from local ATA with IP:192.168.0.15 and hangup as
soon as the ringing starts)

SER is at IP 200.75.73.22 and remote ATA is 200.75.91.137.  After the call
is cancelled SER keeps sending ACK messages to the remote ATA and 487s to
the local ATA.  It has always been like this.  Not sure who is at fault
here.

Any ideas?

Regards,
Ricardo


----- Original Message -----
From: "Alejandro Olchik" <aolchik at telenova.net>
To: "List serusers" <serusers at lists.iptel.org>
Sent: Sunday, May 25, 2003 10:24 AM
Subject: [Serusers] SER is not matching ACK Messages



I'm experiencing some strange behaviour on SER.

When an enpoint sends an INVITE and after some 180 Ringing
messages cancels the call, SER forwards the CANCEL message to the
destination  and replies with a 200 Cancelling message.
(this seems to be OK up to this point)

20ms after the Cancelling message was sent,  SER sends a 487
Request cancelled message twice with 80ms of difference
(any ide of why this is done?)