Have you tried enabling SDP to pass through CUBE? So that the endpoints exchange information transparently? conf tvoice servsippass-thru content sdp Keep us updated.
Hello,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. conf tvoice servsippass-...