UCM / Unity Compatibility with MS Exchange

Unanswered Question
Mar 23rd, 2009
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Does anyone have a link that explains which verison of UCM/Unity work with Exchange 2003 and 2007? Or specifically does anyone know if UCM 4.2/Unity 4.0 will work with Exch. 2007? Also can you run UCM 7.x/Unity 7.x with Exchange 2003?

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Jaime Valencia Mon, 03/23/2009 - 09:58
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Exchange 2007 requires Unity 5.x or above

look at the message store section for each version for compatibility

System Requirements for Cisco Unity Release 7.x


System Requirements for Cisco Unity Release 5.0


Cisco Unity 4.2 System Requirements


any other version you're interested can be found here:

Install and Upgrade Guides




if this helps, please rate

mparella Mon, 03/23/2009 - 10:04
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Thanks, this definitely helps! It looks like I am OK with running Unity 7.x with Exchange 2003. What about CM? Do you know of any issues running UCM 7.x in Exchange 2003 enviro.?

Thanks again,

Will Rate.

Ginger Dillon Tue, 03/24/2009 - 10:54
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Hi -

I am not aware of any direct relationship between CallManager and Exchange 2003. It's Unity's integration with Exchange that is the key. We are running CUCM 6.1, Unity 4.2 and Exchange 2003; Unity Connection also works with Exchange 2003 for IMAP access using Outlook.


mparella Tue, 03/24/2009 - 10:57
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Great, Thanks Ginger. I just wanted to make sure if we went up to 7.x versions of CUCM and Unity we would be OK still running Exchange 2003. I found teh Unity article, just nothing formal on CUCM.

Thanks again.


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