http://blogs.technet.com/b/daveh/archive/2009/04/07/how-to-locate-and-dial-a-mail-enabled-contact-using-the-directory-search-functionality-in-unified-messaging.aspxContrary to statements published in various third party integration documents, it is possible to include mail-enabled contacts in the Directory Search functionality of a Dial Plan or an Auto Attendant in Unified Messaging.  Although the followingen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)