[cisco-voip] 4.2 upgrade

Tue Aug 2 10:04:04 EDT 2011

The Main reason for upgrading is to get the tool to give you an amount of DLUs equivalent to what you currently have in terms of phones, If you do a clean install, you would have to open a case with licensing, explain your predicament, they will ask you for all the data, Phone quantity ,etc and build you a license file.

This happened to me on an install where the 4.1.3 server was constant;ly crashing and could not run the upgrade tool correctly. It might be worth a shot.

Jorge

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of george.hendrix at l-3com.com
Sent: Tuesday, August 02, 2011 9:59 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] 4.2 upgrade

Hey guys,

We are in the process of upgrading from CCM 4.2(3) to CUCM 8.X really soon.  To give you some background.

First, I am not confident the current system was built correctly in the first place, but it seems somewhat stable.

Old system currently running:
CUCM 4.2(3)Sr4b (user accounts are integrated with Unity active directory)
Unity 4.0 (windows 2000)
Emergency Responder 1.2

Upgrading to:
CUCM 8.5 or 8.6
Unity connection 8.6
Emergency Responder 8.5

In my opinion, it may be too much of a risk that it could crash the old system by trying to back out of the current AD integration, then exporting data out.  There is no guarantee the export will work, not to mention there is no direct upgrade between CUCM 4.2 and CUCM 8.X, nor is there a direct upgrade from Unity 4 to Unity connection 8.  I also think the same is true for CER.

BTW, we are also planning to do LDAP sync with our domain AD in the new system.

Thoughts?

Regards,
Bill

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