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IS3000: problem with RTCP

IS3000: problem with RTCP

IS3000: problem with RTCP

I'd like to receive/make call with a Windows Mobile 6 device registered on a IS3000.

I've two Windows device:
- I-mate Ultimate 8150
- HTC Touch Diamond
Both them have "Custel Voip" cab installed. SIP registration and signaling works well. When the call switch to RTP hangs up. In my opinion the problem is RTCP: the first RTP packet that the client send to the server is a RTCP packet. The server respond with an ICMP destination ureachable. The client try resend anhoter RTCP packet ...

I've a third mobile device (Nokia E61i - Symbian) that receive/make call. I've seen that it doesn't send RTCP packets.

I would like to know if
- the implementation of RTCP protocol in IS3000 is known to be buggy or
- I can configure the WM6 SIP client in so that it doesn't send RTCP packets

Can somebody help me?


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