Coonect 191.. by Sync Station Siemens SL45

Hi there!
I have a Sync Stayion for Siemens SL45...

Can I connect by it.... my Motor 191?
If i have an audio jack 2.5 mm. for H.F.

There are next Pin outs of Sy.St.
Rx - 6
Tx - 5
GND - 1.

Is it all that is wanted?

Thx for replyes!