DTMF commands to run scripts in ASL

How would I go about setting up a DTMF script to run commands.
----- looking to start and stop the mmdvm_bridge over my android phone while linked into node via DVSwitch app-----
DTMF 11 would run: sudo systemctl start mmdvm_bridge
DTMF 10 would run: sudo systemctl stop mmdvm_bridge

I see some references to doing similar in rpt.cof

Thank YOU
James VE1JCS

Yes sir, see: