I have a site configured with H323. They have a 2801 router running 8 phones and using a couple of POTS lines. They recently lost power and when the power was restored the network came up but it took 20 minutes for the phone to switch back from fall-back mode. We are on CM 8.5. Is there anything in the config itself or in call manager that would cause this long of a delay?
Where you able to log into the router/switch? I had an issue once where after a power outage our MPLS/EIGRP would take about 20 minutes to reestablish relationship so everything stayed down for longer than expected.
Before diving into Call manager/IP telephony too much, I would make sure the layer 3 connectivity between your IP phones and HQ site was up. I understand this is almost impossible to do after the fact, perhaps it will be best to schedule a planned fail over to test. It is very likely that the keep alives were not reaching CUCM due to an underlying issue with your network, and not the configuration itself.
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...