RE: Direct modem-to-modem... how?

Randy Riecks (riecks@tds.com)
Tue, 31 Oct 1995 18:35:58 -0500

Thanks... I'll try the other newsgroup as well.

I DID get it to work a few times, by the way. But I haven't figured out the
step-by-step surefire process to make it happen.

Basically, I connect the two machines, then issue ATH1 to each to force them
"off-hook", then issue ATD on one and ATA on the other. The speakers are
"live" so I can hear if they're trying to chatter.

The tricky part is that sometimes I have to reenter the commands on one side
at a time until they work it out with each other. Almost seems like one or
the other goes back on-hook somewhere along the line.

Worked quite nicely a few times though... I was able to XMODEM some file
data across quite nicely! I'll just purchase the data cable to hook up the
Zaurus to my computer the proper way, but this is a good thing to know in a
fallback situation.

>There *is* a way to do this, but I don't know the exact details. Basically,
>the phone line (wire) has to show some bias (voltage) in order for the
>modem equipment to recognize it as live. of course, won't see a dialtone,
>will it ? Anyway, a guy at a company I used to work for worked up the
>necessary hack using a phone cord and a 9v battery, so that he could test
>our devices with modems without using the phone lines.
>
>Perhaps try posting your query to the newsgroup comp.dcom.modems.
>
>(and I'd be interested to hear the answer if you get one).
>