Upgrade callmanager V8.5 to 9.1

[saul.reyes]

Hello

We think to make a callmanager upgrade to version 9.1 but we have a dude respect to download the new firmeware to al the phones or used the COP file from version 8.5 for all telephones on version 9.1. ¿this can be possible?

Best Regards

[Chris Deren]

Phones will automatically upgrade their firmware after the upgrade to whatever the default firmware is defined for the CUCM.

COP upgrade file needs to be installed when going from CUCM 8.5 or older to 8.6 or newer as that prepares the Linux Red Hat Enterprise for OS upgrade.

Let me know if this answers your questions as I was not 100% clear on those.

HTH,

Chris

[saul.reyes]

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Thanks Chris

The principal trouble is that we would like to  control the migration firmeware on telephones cause us MPLS is not enough to support al the petitions from 1200 telephones  to Callmanager on center node is for this situation that we would like to know if i upgrade only the callmanager from 8.5 to 9.1 is possible that the telephones  can operated with the firmeware 8.5 and our callmanager to 9.1.

I hope your opinion and Best Regards

[Chris Deren]

Use Firmware Load Sharing feature of CUCM to enhance the firmware upgrade.

If you do not want to upgrade firmware you can change the default firmware load to existing firmware which will not trigger firmware upgrade.

Phones can operate with older firmware loads.

HTH,

Chris

[saul.reyes]

Chris thanks so much for your answer, with this confirmation the upgrade could be more easy and only make the upgrade the callmanager.

Best Regards

[Chris Deren · Accepted solution]

Great, let us know how it goes.

HTH, please rate all useful posts!

Chris