Integrate Unity 4.2 to (2) Callmanager clusters

[nelson.chu]

Hi,

Is it possible to use a single Unity 4.2 for (1) CCM 4.2 and (1) CUCM 7.1 cluster at the same time?  For example, splitting the ports to both clusters. We have a large (>30K) VoIP deployment and need to upgrade the Callmanager cluster and Unity, so this is for migration purpose.

Nelson

[David Hailey · Accepted solution]

Yes, you can do this.  You will need to upgrade the TSP to ensure compatibility with CUCM 7.x and manage two integrations (within UTIM) but it can be done.  Go here:

http://www.cisco.com/en/US/docs/voice_ip_comm/unity/5x/integration/cucm_sccp/guide/cuintcucmskinny090.html

From there, look for a link and section titled "Multiple Clusters".

Should get you what you need.

D. Hailey

Please rate helpful posts!

[nelson.chu]

David,

Thanks!  Is it possible to have (1) Unity 4.2 and (1) Unity Connection 7.1 integrated to (1) CUCM 7.1 cluster at the same time?

Nelson

[Rob Huffman]

Hi Nelson,

You can integrate both simultaneously

The 2nd integration will need new Ports, VM Profile, Hunt Pilot etc. but you

should be good to go.

Cheers!

Rob

[William Bell]

I had a near identical requirements a while ago for a customer migration. I opted to leverage Q.SIG between the two Call Manager clusters for handling the VM integration. I assigned all ports to one cluster and just tunnelled MWI through Q.SIG (via ICT). There are things to be dealt with for sure (like overlapping dial plans) but I found it relatively painless.

I did a quick write up on the experience. Maybe you will find it useful.

http://www.netcraftsmen.net/resources/blogs/using-qsig-to-integrate-unity-with-multiple-cucm-clusters.html

HTH.

Regards,
Bill