I'm somewhat surprised the local Dstar repeater frowns on data transmissions... that's part of what makes Dstar powerful and there are even dedicated data REFLECTORS! Look at and search for "data". You connect to these data refectors just like you would any other Dstar reflector but once connected, you use the Dstar radio's computer connection via say D-RATs, etc.
Btw, D-Rats on RF works pretty well. Since data over Dstar doesn't have any standard per se, D-Rats created it's own protocol if you will over it. That same protocol is also used over AGW/PE packet if you want to use it that way. One thing I really like about D-Rats is you can be connected to the Internet RAT flector, and have a working connection on RF, and Packet and in the chat window, select which link your messages will go over.
--David
KI6ZHD