Exchange 2010 UM implementation steps

1. Build Exchange 2010 SP2 UM server

2. Replace the self-signed cert with a cert that’s trusted by all Exchange servers. Cert CN=fqdn of exchange UM server, no SANs required (Make sure any required intermediate and root certs are installed)

3. Run the exchucutil.ps1 PowerShell script on the 2010 Exchange server.

4. Add the Exchange 2010 server to the existing Dial plan

NOTE: ocsumutil.exe is run once for each dial plan. In a migration scenario the dial plan already exists and there is no need to perform this step as part of the Exchange 2010 UM implementation

Reference:

http://technet.microsoft.com/en-us/library/dd335126.aspx

 Here’s a screenshot for adding the 2010 UM server to the existing dial plan: