[comp.sys.zenith] Testing internal modem in Supersport

RFM@psuvm.psu.edu (11/26/90)

   I have a Zenith Supersport (University-owned, actually) that I'm
loading up with software to take on a trip. Seem to be having modem
problems, however, with its internal modem.  A MODE MODEM ON command
returns an Invalid Parameter meesage. With ProComm PLus loaded, I can
get help menus, etc., but characters don't echo to screen from keyboard.
I try typing the Hayes' test command "AT" but nothing happens. Anybody
know of any test routines I can run to check this sucker out? Thanks.
Bob Munzenrider, PSU-Harrisburg

*Invalid Parameters*!