benybarr I connect to my OS4P via a Fusion radio (FTM-300DR) and cross-mode to D-Star, DMR and P25. However, it's not always obvious how to set it up. The information is in the manual but I belive what's missing are a few application notes.
In other words, the manual lists the "ingredients" but what's missing are simple "recipes".
Yes, you can preset everything to be able to switch modes via DTMF and the setup is listed. But some simple examples could go a long way to help people understand the process.
It took me a while to get it right.