There is a new application note available that shows how set up a server that has both a Diva board and a DM3 or Springware board in it.  The app note also goes into detail about how to write an application that is talking to both boards at the same time, and there is sample code available that acts as an answer machine, taking inbound calls from bothe architectures at the same time. 

The note is called Using Dialogic Boards with DM3/Springware and Diva Server Architecture in a Common Server and was written by Dan Wolanksi, who you can often find answering questions over on the GlobalCall/R4 forum.  Well done, Dan.