MTTY and Rigexpert TI-7


Trying to set up MTTY to work with an interface Rigexpert Ti-7 and a transceiver Kenwood TS-950SD.
FSK led on the interface turns "on" but it stays "on" (no blink): radio goes on trasmission but no signal modulation at all.  Only a continuous "beep".
Any solutions ?
Thanks and 73
Giacomo IW3IE