UM Design w/SRST and Centralized Call Processing

jtiso · ‎09-30-2003

Location A:

Call manager

Unity

Local Gateways

own Exchange Org and Domain

Location B:

Uses Call manager from Location A

uses SRST for backup

uses Unity as Auto Attendant

own Exchange Org and Domain

In this scenario can I run a Unity server at Site B? What happens in SRST mode? Can Unity Express work here?

kechambe · ‎09-30-2003

Due to some serious limitations in the MAPI protocol we don't support Unity connect to Exchange over a WAN link. So in this situation you would need to have a Unity server at both sites. Microsoft is working on coding a fix for us so this could change down the line.

Even if you did have a Unity server at each site Unity can't work with SRST like the phones can. So during a failure Unity isn't going to be able to register with the SRST router.

What you can do is leverage Unity's Digital Networking and have Unity A be the auto attendant for both locations. Then if the WAN link is down you can route calls over the PSTN so that the user’s phone in Location B will at least ring.

Hope this helps...

Keith

jtiso · ‎09-30-2003

In this scenario does it matter that the 2 exchange servers are different (1) 5.5 and (1) E2K and in different domains. They do require Unified Messaging at location B.