Microsoft® Exchange Server 2010 Inside Out

Unified Messaging

UM is a topic that deserves a complete book in its own right to cover the many issues that have to be considered in implementing Exchange-based voice mail as a replacement for a traditional voice mail system that is tightly associated with a private branch exchange (PBX). A great deal of negotiation and coordination normally has to occur between the teams responsible for telecommunications and messaging within the company to ensure that issues such as dial plans are addressed. Companies such as Nortel and Cisco had offered voice mail integration for Exchange in previous versions, but Exchange 2007 marked Microsoft’s first integrated version purpose-built to work with Exchange, Outlook, and OWA and to fit into an overall Unified ...