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New Member

CM UPS auto shutdown

Hi all,

I have a customer that is asking about CallManager support for UPS auto shutdown. That is, in the event of an extended power failure they would like the UPS to gracefully power down the CallManager Cluster. They have a Callmanager 4.2(3) cluster and MGE UPS. There doesn't seem to be much detail on this type of support for Callmanager.

Any pointers would be greatly appreciated.



Hall of Fame Super Red

Re: CM UPS auto shutdown

Hi Bill,

Excellent idea! This functionality/integration was added with the release of CUCM 6.0(1) I believe.

Basic Uninterruptible Power Supply (UPS) Integration

When Cisco Unified Communications Manager 6.0(1a) runs on an MCS 7825H2 or MCS 7835H2, basic integration to the UPS model APC SmartUPS 1500VA USB and APC 750VA XL USB gets supported. Integration occurs via a single point-to-point Universal Serial Bus (USB) connection. Serial and SNMP connectivity to UPS does not get supported, and the USB connection must be point-to-point (in other words, no USB hubs). Single- and dual-USB UPS models get supported. The feature activates automatically during bootup if a connected UPS gets detected.

Alternatively, on MCS-7835H2, you can execute the show ups CLI command that shows the current status of the USB-connected APC smart-UPS device and starts the monitoring service if it is not already started.

On supported servers, the CLI command also displays detected hardware, detected versions, current power draw, remaining battery runtime, and other relevant status information.

When the feature is activated, graceful shutdown will commence as soon as the low battery threshold is reached. Resumption or fluctuation of power will not interrupt or abort the shutdown.

For unsupported Cisco Unified Communications Manager releases, MCS models and/or UPS vendor/make/models, you can cause an external script to monitor the UPS. When low battery gets detected, you can log on to Cisco Unified Communications Manager by using Secure Shell (SSH), access the CLI, and execute the utils system shutdown command.

From this doc;

Hope this helps!


New Member

Re: CM UPS auto shutdown

Thanks Rob. Yes this answers my question. Thank you.

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