> <Snip>

> > I wrote a small program that opened port 2 and dialed the number of the
> > second machine. It did this, and the other machine came up with RING and
> > sometimes, CONNECT 9600. After this it gets NO CARRIER

> If you drop certain RS232 "handshake" lines (especially the DTR), the
modem
> will respond with disconnecting the phone-line.  This in turn will result
> in a "NO CARRIER" on the receiving end ...

> > How do I call from one machine to another ? What do I have to look out
> for ?
> > It shall only call up the machine, send an id code, answer back, and
then
> > call up an external ZMODEM program to transfer files.

> Be sure the RS232's handshake (DTR, RTS, DSR, etc) lines do their job.

> The standard BIOS routines are not equipped for this.  They open & close
> the connection for every char send ...  So, you'll have to use a
> third-party RS232 buffer program, a program library (containing the same),
> or tackle it the hardware way.

> Greetz,
>   Rudy Wieser

> Thanks! So, standard DOS and opening com ports won't do it! Any pointers
to
> where to find such a library for QB ?

> Sorry, can't help you there.  I'm writing in QBasic (You know, the
> crippeled version of QB supplied with DOS :-) for it's easy changing of
> source-code, but my main language is Assembly.  But I've seen several
> QB(asic) sites on the web.  Surely one of them will have what you are
> looking for.

> Greetz,
>   Rudy Wieser