Video via intercluster trunk

Unanswered Question
Aug 4th, 2010


We have two cluster CMM 4.1 & CUCM 7.1.5. I established an intercluster Trunk between them, the audio calls ar going fine, but ther is an issue with the vedio calls. Please help if there is a special configuration should be applied in both cluster.


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amarmn1975 Wed, 08/04/2010 - 23:01

I forgot  that i am using, 7985 with CCM 4.1 and 9971 with CUCM 7.1.5

Aaron Harrison Thu, 08/05/2010 - 00:16


Have you verified that the location assigned to the ICT has sufficient video bandwidth assigned?

Also that the combination of the phone's region and the ICT's region (as assigned to it's device pool) permits a suitable amount of video bandwidth?

Do you have 'Media Termination Point Required' checked on the ICT? That only permits audio if using the CCM built in MTP.


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amarmn1975 Thu, 08/05/2010 - 00:22

Thanks for your replay.

Just to clarify that the video calls are going fine with 7985, but with 9971 and 7985 no.


Aaron Harrison Thu, 08/05/2010 - 00:29

So you have 7985s on both sides of the ICT that can do video calls between themselves?

Do you have a 7985 and 9971 that can make video calls between themselves on the same cluster?

amarmn1975 Thu, 08/05/2010 - 00:31

Yes in the same cluster 7985 and 9971 can do, but in different no .

Note : I have ccm 4.1 and cucm 7.1.5


schemberg Tue, 05/24/2011 - 02:16


we ran into same issue. I think it is related to CM 4.1 and new video phones (using h.264?!). A direct intclustertrunk between CUCM 7.1 clusters works like a charm, but not across a CM 4.1.




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