CCM 4.1, 42,4.3

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Sep 4th, 2007
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I am still recommending my new customers to purchase Call Manager 4.1(3) if they are not sure whether to move towards Linux Based Call Manager or not in the future. If a client doesn't want Linux based Call Manager down the road then would it be a good idea to go with either Call Manager 4.2 or 4.3?

I heard that only up to CCM 4.1(3) allows the easy migration path toward Linux Based CCM such as 5.1/6.0.


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Rob Huffman Tue, 09/04/2007 - 13:17
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Hi Abbas,

From 4.2 there is a direct upgrade path to 6.x which is very good, but not to 5.x as you have noted;

Cisco CallManager Upgrade Paths

System Requirements

Make sure that you install and configure Cisco Unified Communications Manager Release 6.0(1x) on a Cisco Media Convergence Server (MCS).

You may also install Cisco Unified Communications Manager on a Cisco-approved HP server configuration or a Cisco-approved IBM server configuration.

Cisco Unified Communications Manager requires a minimum of the following items on the Cisco MCS.

2 GB of memory

72 GB disk drive

2 GHz processor

Supported Platforms

To find which servers support the Cisco Unified Communications Manager Release 6.0(1x), refer to the Cisco Unified Communications Manager Server Support Matrix at;


From these CCM 6.0.(1a) Release notes

Hope this helps!



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