I was trying to work with a pair of virtual ports to connect Wisp and Mixw!
The com pair failed to connect these software!!!
I found the virtual connector device at Virtual Serial port
Emulator program (VSPE) can do this task nicely .
Wisp send packet to MixW and Mixw send it to soundcard and keying the Rig via existing port.
So the Tx line is working well between Wisp--> MixW--> Soundcard--> Rig
The next step is to test the Rx line between Rig--> Soundcard--> MixW--> Wisp.
So with out Hardware TNC could it works?
May I should waiting for a bird !