UNIX-PC as a terminal emulator calling a Telebit

[Donn S. Fishbein]

A potential user of my local system is having problems logging in using
a UNIX-PC as a terminal emulator. (The system here consists of a Mac
IIcx with a Telebit TB+ modem). According to him, everything works find
as 300 baud, but at 1200 baud, garbled characters are received
intermixed with legitimate characters. The problem occurs using several
different terminal emulation packages. Other users using other
computers and terminal emulators have not reported any problems.
Apparently he is able to call other systems which do not use a TB+
modem. Does this sound familiar to anyone?  Thanks.
-- 
Donn S. Fishbein, MD, PhD        ..killer!radar!donn