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CCM MTP Registration

I have CCM 7.X sub/pub and have configured software MTP for each severs and started the services on each server, but both the Media Termination Ports are registering to the subscriber. Is this correct or should each MTP be registered to its own server?

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Accepted Solutions
Cisco Employee

Re: CCM MTP Registration

It depends on how your device pool (which contains a call manager group)  is configured on the MTPs.  In your case both MTPs likely have the same device pool and the call manager group in that device pool has the subscriber first.

Cisco Employee

Re: CCM MTP Registration

You don't have to change them.  If the subscriber fails both MTPs will register to the publisher and still be usable as long as the publisher is also in the call manager group.  The only thing having both of them on the subsciber does is routes more RTP traffic for the audio stream through the subscriber if a call is using one of the MTPs.  By having one registered to each server the RTP traffic should be spread out a little more.  However this depends on how many calls are using an MTP.

3 REPLIES
Cisco Employee

Re: CCM MTP Registration

It depends on how your device pool (which contains a call manager group)  is configured on the MTPs.  In your case both MTPs likely have the same device pool and the call manager group in that device pool has the subscriber first.

New Member

Re: CCM MTP Registration

Yes, after reviewing my configuration this is correct but should I chanage the DP and the CMG so each MTP registers to its own server? Or does it matter where they have registered? Also will the current configuration affect the MTP resorces if the cluster goes into failover mode (something I do not want to test on a live system)? Thanks.

Cisco Employee

Re: CCM MTP Registration

You don't have to change them.  If the subscriber fails both MTPs will register to the publisher and still be usable as long as the publisher is also in the call manager group.  The only thing having both of them on the subsciber does is routes more RTP traffic for the audio stream through the subscriber if a call is using one of the MTPs.  By having one registered to each server the RTP traffic should be spread out a little more.  However this depends on how many calls are using an MTP.

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