We are going to migrate all the servers of our Brussels branch to a remote Data Center based in London.
In the meantime we would like to implement a Cisco Call Manager v6 solution with Unity.
Are there some restrictions or best practices about having the Unity server in Brussels and the Call Manager and Exchange 2003 Cluster in the Data Center.
Also we need UMS (voicemail and fax via outlook) but that's embedded in the fully fleshed Unity I believe.
An alternative would be to keep only the voicegateway in Brussels and have the Unity, CCM6 and Exchange2K3 in London.
For an office of 200 people what would be the recommended bandwith requirement ?
It's not clear what way to choose and according to one of the vendors I contacted, Unity and Exchange has to reside on the same LAN, can somebody confirm that ?
All help is very much appreciated.