I'm trying to register a Polycom video endpoint on CUCM v 8.6.
I had success using Third-Party SIP Device (Advanced) phone type, but this way there is no video calls, but only audio calls.
Then I tried the Generic Desktop Video Endpoint phone type, but CUCM rejects registration with the message 485 Ambiguous. The reason was in the SIP message:
Warning: 399 CUCM-LAB "Device type mismatch"
My question is: how does CUCM recognise/distinguish a Generic Desktop Video Endpoint? Which type/models/vendors of Generic Video Endpoints are supported on CUCM?
Thanks in advance.