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conference call cant be established

cecilmagwenzi
Level 1
Level 1

Good day

I have CUCM 11.5 and when I when a conference call from a 7841 handset its going through, but when i try from the 8865 handset its saying unable to start conference

 

kindly assist

1 Reply 1

Jonathan Schulenberg
Hall of Fame
Hall of Fame

Are both phones assigned an MRGL, likely via their DP assignment, that has an ad-hoc conference bridge resource that is registered, has capacity, and supports the audio codec of the call per the Region config?

If yes, does the 8865 conference escalation fail only on a call that negotiated video or all the time, including audio-only calls?