This PBX configuration note contains information about deploying Exchange 2007 UM with a Cisco Call Manager 5.1 using direct SIP connection. You can use it to help decide if Exchange 2007 UM is the appropriate solution for your organization.
About The Author
Anderson Patricio is a Canadian MVP in Cloud and Datacenter Management, and Office Server and Services, besides of the Microsoft Award he also holds a Solutions Master (MCSM) in Exchange, CISSP and several other certifications. Anderson contributes to the Microsoft Community with articles, tutorials, blog posts, twitter, forums and book reviews. He is a regular contributor here at Techgenix.com, MSExchange.org, ITPROCentral.com and Anderson Patricio.org (Portuguese).