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New Member

Help! CM will not let remote location call Unity

We are still experiencing the same issue with our Call Manager Cluster. We have on five occasions lost connectivity between one remote location and the Unity mail server.

TAC has not been able to help yet.

Have you seen anything like this?


It is always the same remote location.

It occurs after 8 to 9 days.

The phones display the “Not Enough Bandwidth” message.

There is more than enough bandwidth available.

It is only one remote location.

The only number that can not be called from the IP Phones is UNITY.

All other calls work.

All of the other locations work.

The only way to work around the issue is to power cycle the cluster.

This is not an acceptable solution


Stop the Call manager service on the Subscriber the phones home to the Publisher.

Restart the Subscriber and the phones home back to the Subscriber.

Restart the Publisher and the problem goes away, for 8 to 9 days.

By following this procedure we have been able to temporarily resolve the issue without dropping calls.


When the cluster was restarted today all of the calls dropped. Huge user dissatisfaction

Got any ideas?


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New Member

Re: Help! CM will not let remote location call Unity

Sounds like a leak in locations CAC. Try keeping an eye on CurrentAvailableBandwidth and MaxAvailableBandwidth under Cisco Locations in performance monitor. Do this on every CCM server daily. When there are no calls to the problem location then CurrentAvailableBandwidth should equal MaxAvailableBandwidth. If you see any discrepancies then collect the CCM trace files for the last 24 hours and open a TAC case. There is a bug open already for a similar issue (CSCdx18162). Your additional info may help nail it.

New Member

Re: Help! CM will not let remote location call Unity

We are running Call Manager 3.1.3a Service pack D

The phones are running P00303010400

Is this a Call Manager 3.2.2a or has it been seen in earlier versions?

New Member

Re: Help! CM will not let remote location call Unity

Used the Bug toolkit to answer my own question. This first appeared in 3.1.3a. There is no real fix at this point.

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