04-09-2014 05:17 AM - edited 03-19-2019 08:05 AM
Hi everybody
We have two CUCM 8.6 and we need to poweroff one of these to change a parts in the UCS server. I know that the phone who's registered with the one I will power off will just "blink" and change to the other CUCM. But I don't know if the phone registered with the one I will power off, if they had a call in progress, did the call will be dropped or will stay in progress?
The answer will guide me to fix a maintenance Windows if it need to be.
Thanks
04-09-2014 08:32 AM
Hi There,
The calls should be maintained
Table 11-1 Call Preservation Scenarios
Scenario | Call Preservation Handling |
---|---|
Cisco Unified Communications Manager fails. | A Cisco Unified Communications Manager failure causes the call-processing function for all calls that were set up through the failed Cisco Unified Communications Manager to be lost. The affected devices recognize that their current Cisco Unified Communications Manager failed. Similarly, the other Cisco Unified Communications Managers in the cluster detect the Cisco Unified Communications Manager failure. Cisco Unified Communications Manager maintains affected active calls until the end user hangs up or until the devices can determine that the media connection has been released. Users cannot invoke any call-processing features for calls that are maintained as a result of this failure. |
Communication failure occurs between Cisco Unified Communications Manager and device. | When communication fails between a device and the Cisco Unified Communications Manager that controls it, the device recognizes the failure and maintains active connections. The Cisco Unified Communications Manager recognizes the communication failure and clears call-processing entities that are associated with calls in the device where communication was lost. The Cisco Unified Communications Managers still maintain control of the surviving devices that are associated with the affected calls. Cisco Unified Communications Manager maintains affected active calls until the end user hangs up or until the devices can determine that the media connection has been released. Users cannot invoke any call-processing features for calls that are maintained as a result of this failure. |
Device failure (Phone, gateway, conference bridge, transcoder, MTP) | When a device fails, the connections that exist through the device stop streaming media. The active Cisco Unified Communications Manager recognizes the device failure and clears call-processing entities that are associated with calls in the failed device. The Cisco Unified Communications Managers maintain control of the surviving devices that are associated with the affected calls. Cisco Unified Communications Manager maintains the active connections (calls) that are associated with the surviving devices until the surviving end users hang up or until the surviving devices can determine that the media connection has been released. |
Cheers!
Rob
04-10-2014 02:48 AM
Hi,
[+5] to Rob.
Your IP phone would show UCM Down, Features Disabled for the active calls when CUCM goes down to which IP phone is registered.
regds,
aman
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