with ccm 4.1 and Unity (not yet purchased) I am looking to run a Unity cluster in london that will deliver unified messaging for all of our users in europe.
I believe though that Unity has to be on the same LAN as the Exchange server, are their any other issues that might cause problems with this integration such as round trip dealys etc
The European sites are running a mixture of CCM and CCME that are integrated with the Publisher in London via SIP/MGCP.
Also what impact would this have on WAN traffic when users play back their messages with VMO ?
Does the RTP stream originate from the mail server ?