In case of session-audit from SBC,
UAC <------------ Broadworks
INVITE ver=2
inactive
UAC--------------> Broadworks
INVITE ver=2
??
?? Should be a=inactive because UAC is already in hold. And also, earlier for
a=sendonly, UAC had got a=inactive.
-Somesh
-----Original Message-----
From: sip-implementors-boun...@lists.cs.columbia.edu
[mailto:sip-implementors-boun...@lists.cs.columbia.edu] On Behalf Of ext Nauman
Sulaiman
Sent: Thursday, April 28, 2011 12:31 PM
To: sip-implementors@lists.cs.columbia.edu
Subject: [Sip-implementors] Broadworks Reinvite issue
Hi,
Scenario is as follows UAC makes call to UAS over Broadworks B2BUA and then UAC
goes on hold. Broadworks periodically issues Session Audit with SDP version
number unchanged, this is for UAC and UAS which do not support session timers
or UPDATE method.
UAC -------> Broadworks ------------> UAS
INVITE ver=1 INVITE ver=1
sendrecv sendrecv
UAC <------- Broadworks <---------- UAS
200OK ver=1 200OK ver=1
sendrecv sendrecv
UAC goes on hold
UAC------------> Broadworks -----------> UAS
INVITE ver=2 INVITE ver=2
sendonly inactive
UAC <--------- Broadworks <--------- UAS
200OK ver=2 200OK ver =2
inactive inactive
Broadworks session audit (UPDATE not supported by UAC or UAS)
UAC <------------ Broadworks
INVITE ver=2
inactive
UAC--------------> Broadworks
INVITE ver=2
??
With session Audit shown at the end, Broadworks sends the UAC a REINVITE with
the session version unchanged. However the last SDP that the UAC sent
broadworks had a media attribute of sendonly.
What should the UAC send back in the media attribute field here, should SDP be
unchanged if the version no. is unchanged but in this case we would send back
the original sdp with an attribute of sendonly.
I have seen UAs put inactive in this field, what is correct?
Many thanks
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