I've found..

Stephen Wenzler (swenzler@zeus.jersey.net)
Tue, 9 Jan 1996 11:00:46 -0500 (EST)

Please patron me, I have found some problems that caused some diffeculty
so now it is all fixed and it works so well - one problem is that if I
select VIDEO-1 the sound continues to come from TV so I knew that it was
because I have patched in the audio output to my sound blaster so I had
to disconnect the short cable that connects between the TV card and sound
blaster or just turn off the aux input and turn on the mic input if I
wish to use microphone. That's is the only solution to owners of centain
TV cards that uses this method of patching in the audio ports.
I believe this technology would be GREAT for hearing impaired people to
allow them to teleconference using the program and allows them use thier
ASL <American Sign Lanuage> to communicate between them. ASL is a lanuage
that deaf community uses to communicate with each other.