🚀 go-pugleaf

There are a bunch of PC "phone book" type programs.  See your
nearest bulletin board.  I think a commercial program is available
in Borland's Sidekick pacakge,  and there is shareware from Metz.

As far as writing your own all you need to do is:

  -  open the modem file (COM1)
  -  write the string ATDT phone_number ;

The phone number will get dialed,  when the dialing is complete the
";" will cause the modem to get off the line.  You can pick up the
handset and talk.

This can obviously be made more robust by including modem control strings
to reset the modem,  set the appropriate level of echo and response codes
and enable tone or pulse dialing.  See a Hayes command reference manual.

Regards,

  Spero Koulouras