You cannot rename an exchange server. You would have to rebuild and restore the mailboxes or use a swing server of some kind to move the mailboxes to while you rebuild.

modify the following cm service parmeters as needed. MGCP Network Location OffNet for E1 and T1 or H323 Network Location OffNet

There are few things to try depending on the platform check out this doc. Newer pdlm's and/or custom pdlm's may help. http://www.cisco.com/warp/public/105/custompdlms.html

One option for the wan links is to enable nbar protocol discovery to track what apps are currently consuming how much bandwidth which will help you develop a QOS plan. http://www.cisco.com/warp/public/732/Tech/qos/nbar/http://www.cisco.com/univercd/c...

http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1dd69b90/5#selected_message