GS modem troubles

[jlogo@NOSPAM.zip.com.au (John Logothetis)]

I have an Apple IIGS (ROM Rev 3) 1.4MB system connected to a generic
33k6bps external faxmodem that I am trying to get working correctly.

I have setup Proterm 2.1 to use the GS's serial port and created a
modem entry with a default init string (AT&F) and can successfully
enter terminal mode through Open-apple CTRL-T.

Now the problem.  I have set the port speed of my system entry to
19.2Kbps and also entered two AT commands at the terminal mode which
will lock the modem at a DCE rate of 14.4Kbps (ATS37=11, ATN0).  Every
time I try to dial a system I get a successful connection but no
echo-response from the remote.  Data is definitely comming down the
line and the AT&F enables echoing by default.  I suspected my modem
cable isn't fully RTS/CTS compliant or the handshaking is wrong.

BTW, The modem cable is the Mini-DIN type used on most Mac systems.  

Any ideas? Do I need a GS-specific modem cable?.






---------------------------------------
Remove "NOSPAM" when replying via EMAIL