I have a Dlink GVC 3000 SIP Std(Video category). I have configured this phone with CCM 7.0. It works well with all cisco IP Phones except 7985. When i tested a call with 7985 model, audio holds good, but video cannot be established.
Then i thought of testing it by adding another dlink video phone. Since i have only 10 units(overall) of the TParty licence, i cannot able to add it to CCM.
Since 7985 supports only skinny i cannot able to configure it as SIP to test this.(whether call goes from SIP to SIP).
Do Thirdparty party SIP phones support video call in the CUCM network?
There are two ways to negotiate video codecs in CUCM.
1) Lower the bitrate in the region settings to force a lower bit-rate codec.
2) Change the codecs on the endpoints.
I would suggest turning on all of the SDI traces and then running them through TripleCombo or TranslatorX. If you do a cisco.com search for "collecting traces for TAC" and a google search for either of the two tools you can find more information on this.