My call scenario is as below:
My Endpoint MS OCS Clinet
<............INVITE......... <............INVITE.........
............180 Ringing.......> ............180 Ringing.......>
======RTP Packts===> ======RTP Packts=====> *** No Ringback heard.
After recieving INVITE at my IP endpoint, it sends 180 and then immediately RTP packets(No 183/200 OK). In this scenario on OCS Clients I'm not hearing Ringback tone.
I heard this is valid behaviour but I don't how to get this kind of information from Microsft. I was searching through OC Help pages but I didn't get this. Is this valid behaviour? Is there any document/site avialable to check these kind of behaviours in future.
Can someone please answer this?
Thanks,
Bharath