Exchange Unified Messaging (UM) is used by Enterprise Voice, Microsoft’s software-powered Voice over Internet Protocol (VoIP) solution. Exchange UM combines voice messaging and e-mail messaging into a single messaging infrastructure. Office Communications Server Enterprise Voice leverages the UM infrastructure to provide call answering, subscriber access, call notification, and auto attendant services.

Supported Versions

Exchange Server 2007 with Service Pack 1 (SP1)

See Also