The ITSP has done a trace.  The ITSP's soft-switch receives the re-INVITE, 
notifies the billing system, and does NOT pass the re-INVITE along to the 
up-stream provider.

The re-INVITE as received by the ITSP looked correct.  I think I posted an 
example somewhere along this thread.   If not, I can find the trace that the 
ITSP sent me and pick the re-INVITE out of it.


Mike Burden
Lynk Systems, Inc
e-mail: m...@lynk.com
Phone: 616-532-4985




-----Original Message-----
From: sipx-users-boun...@list.sipfoundry.org 
[mailto:sipx-users-boun...@list.sipfoundry.org] On Behalf Of Jean-Hugues Royer
Sent: Tuesday, September 21, 2010 5:53 PM
To: Discussion list for users of sipXecs software
Subject: Re: [sipx-users] REFER vs INVITE for transfers

His first post visible here: 
http://forum.sipfoundry.org/index.php?t=msg&th=14230&start=0&S=5f984ee66be7b3320859480cb2bc256b

Says: "I have an ITSP that is currently battling with a switch vendor on 
my behalf, because when we transfer a call from extension to extension, 
we lose audio."

And they probably support re-invites for one reason (beside the obvious 
one that it's required to change codec, refresh timers, or put a call on 
hold), the transfer would be refused if the re-invites were rejected.

Regards


Tony Graziano wrote:
> He is not having an issue with audio. He is trying to use sipXbridge 
> between the ITSP and sipx and cannot because they dont support 
> reinvites at all.
>
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