I get a busy signal when I call voicemail. These are the errors in the Exchange Server application event log.
The Unified Messaging server was unable to submit messages to a Hub Transport server because there is no Hub Transport server available to process the request with UM header file "E:\Program Files\Microsoft\Exchange Server\UnifiedMessaging\voicemail\1b052da3-506f-4555-b99b-889e8f17f7aa.txt". Make sure that there is a Hub Transport server located in the same Active Directory site as the UM server. In addition, make sure that the Microsoft Exchange Transport service is started on the Hub Transport server.
Any suggestions? Is this related? If not how do I correct this?