I would also add to James' posting that it should not really make a difference which protocol is being used on the backend to Communications Manager.  This "protocol war" was waged some time ago to really disrupt the market.  We validated with our CU...

Hi Rob,This is a very good question and one I have been hearing a lot more about!!The primary purpose of integrating any handset with CUMA and using the client, CUMC, is to provide a means of accessing the Cisco UC Enterprise components from a Mobile...