I have some questions about interpreting the SIP/SDP Entry in the Whireshark log. I hope you can help me to see the things clear.
The Problem is that another codec ll not receive any Presentation Content, he ll only see a black screen.
In the Request Invite SIP/SDP i have to following
. Media Description ..... application 51440 UDP/BFCP *
. Media Description ...... video 51142 RTP/AVP 97 126 96 ....
. Media Description ........ application 51444 RTP/AVP 100
- Is the Content using the Video or the Application RTP/AVP ?
- Also Dual Screen Codecs?
- The Ports from the other Codec i ll see in the Request ACK Message right. So it is not need to use the same Ports for send and receiving the RTP/AVP Stream
Thank you advance
I had a problem with two cisco IP Phones 9971 where I had CUBE in the middle. Everytime i called the other phone I would get one way video. What did the trick for me was enabling SDP pass-thru on the cisco CUBE router.
pass-thru cont sdp
Hope that helps!
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