There is a feature where you put a cluster in mixed mode and push down certificates from CUCM side. This is something that needs to be done in the lab before its tried in production. If you are running CUCM version 9.x or older, you will need a USB token to enable this feature. In version 10, you can substitute it for MS CA:
The CUCM cluster doesn't need to run mixed mode in order to push down certificates via CAPF. Assuming you're running newer model phones and CUCM 8.x+, the phones will be able to trust CAPF for certificate installation due to the ITL. I install LSCs on non-secure clusters all the time.
Most of the phones also have a manufacturer installed certificate (MIC) that you can use as long as you can just the Cisco Manufacturing CA. That might be easier than pushing down certificates to the phones and having to manage them when they expire every 5 years.
I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
If you have 2 ISR routers, one acting as Failover, do we need to have both the same number of SRST licenses on the 2 routers?
No. You will only need the SRST licenses on the primary router. Because this feature...
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