IP phones show bogus "unknown" status in UCM

If you end up with a bunch of normally functioning, non-problematic IP phones showing up as "unknown" instead of "registered" in CallManager administration, you can restart the RIS Data Collector service on the publisher to solve the problem. This doesn't affect call processing, but it does seem to restart some media resources like the annunciator, etc.

Changes don't take effect in UCM 6

If you make a change to a Cisco Unified Communications Manager 6.x system and it doesn't seem to take effect, try restarting the Database Layer Monitor service and the TFTP service. This can be done during production hours.

In my case, the change in question was a change to the CallManager Group setting in a device pool.

CallManager Trace Decoding Tools

Triple Combo looks to be a nice tool for decoding CCM/UCM trace files:


http://www.employees.org/~tiryaki/tc/

In the past I've also used TranslatorX, which is good but has some missing pieces:

http://www.employees.org/~pgiralt/TranslatorX/