MWI on duplicate extensions

[nkleven]

I have a customer with a centralized call processing model, without site to site dialing. As a result, they have duplicate extensions throughout the enterprise. How can I configure the Unity to light the correct MWI when there are more than one instance of a particular phone? Thanks

[kechambe]

Unity doesn't support overlapping extensions on a single server. You will need to manipulate the DNs so they are not overlapping within Unity using translation patterns on CallManager.

Thanks,

Keith

[nkleven]

Can you elaborate on that? I have been trying to use translation patterns but I'm not sure I know where they apply. For example, I have two extension 2201's. I gave one another extension(in Unity MWI configuration) and translated it, it works, but the MWI is not working.

[eschulz · Accepted solution]

Make sure you've enabled the multiple tenant MWI service parameter on Call Manager. Here's an excerpt from the Unity-CallManager Integration guide(s): "When this parameter is set to True, Cisco CallManager uses any configured translation patterns to convert voice mail extensions into directory numbers when turning on or off an MWI."

-Eric