Exchange UM Support
Microsoft Office Communications Server 2007 and Microsoft Office Communications Server 2007 R2 will reach end of support on January 9, 2018. To stay supported, you will need to upgrade. For more information, see Resources to help you upgrade your Office 2007 servers and clients.
Topic Last Modified: 2013-06-26
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.
Exchange Server 2007 with Service Pack 1 (SP1)