http://blogs.technet.com/gclark/archive/2008/10/22/asterisk-1-6-0-exchange-2007-sp1-unified-messaging.aspxLast week I discussed how to connect Asterisk with OCS Mediation Server over TCP. I figured since we can connect Asterisk to OCS, why not to Exchange UM. I will go over the configuration changes I made to Asterisk for this, but will not go into detailen-USCommunityServer 2.1 SP1 (Build: 61025.2)http://blogs.technet.com/gclark/archive/2008/10/22/asterisk-1-6-0-exchange-2007-sp1-unified-messaging.aspx#3256886Fri, 19 Jun 2009 23:10:56 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3256886ldye@lifetech.ca<p>Why wouldn't you just integrate Asterisk 1.6.0 into an OCS 2007 R2 environment then have Exchange UM integrate with OCS?</p>http://blogs.technet.com/gclark/archive/2008/10/22/asterisk-1-6-0-exchange-2007-sp1-unified-messaging.aspx#3257117Sat, 20 Jun 2009 23:07:00 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3257117gclark<p>Yes that would be the preferred method if using OCS. &nbsp;But if you just wanted to use Exchange with existing Asterisk deployment, then this shows you how to configure the environment.</p>