3 separate AD2003 and Exchange2003

[aamercado]

Not an AD or Exchange guy here so bear with me...I have a customer with 3 sites - each with its own separate AD/Exchange

We migrate the 1st site (AD2003/E2003) to UM 4.1.1.

The other 2 sites are small offices of roughly 10-20 folks per site. What are some recommendations on integrating with Unity?

I am thinking of having a Unity server at each of the 2 sites to maintain their current decentralize topology or centralize Unity to the 1st Main site but wonder on the pros versus cons.

Thanks

[Hin Lee]

If you decide to use the 1st main site's unity, just bear in mind of the bandwidth and latency requirements of a voip call.

I think the small offices are candidates for Cisco Unity Express (CUE)

[aamercado]

I haven't done CUE in a year....so if my customer wants to maintain his distributed AD structure, then can I have:

Main - CM/UM

1st remote - CUE

2nd remote - CUE

on the CM side, I can have 3 message integration? 1 UM and 2 separate CUES?

Both remote sites have AA. Can I run AA on Unity or on each separate CUEs?

Thanks