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CUCM upgrade media recommendation needed

We have a CUCM cluster with 2 subscriber. recently we have upgraded from version 7.2 to 8.5. unfortunately before we upgrade the second subscriber somehow we have lost the upgrade media. Now I need suggestions about which media should I download from Cisco download site to upgrade the sub. The upgraded CUCM system version is 8.5.1.15900-4
1 REPLY

Have you looked here: http:/

Have you looked here: http://software.cisco.com/download/navigator.html?mdfid=268439621&catid=278875240

 

I don't know if the is a one step upgrade or if you need to upgrade to a middle version first.

 

Hope this helps.

Rolando Valenzuela.

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