From DR@F – Digital Radioamateur France, I have news about this interesting project. The EIV@ project will interconnect different radio technologies using asterisk voip servers:
- D-STAR (UStrust, IrcDDB, etc …)
- DMR (Motorola, Hytera, Yaesu, etc …)
A few years ago, I was working in a similar project called HSMMN (High Speed Multimedia Network) that was combining TCP/IP technology with radio, and linking repeaters over RoIP (Radio over IP) using Asterisk technolgies.
You can see more info at: http://draf.asso.fr/index.php?post/2014/07/05/DMR-FRANCE.ORG-:-Projet-EIV@