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From: pavlov@hscfvax.UUCP (840033@G.Pavlov)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Controlling a modem
Message-ID: <470@hscfvax.UUCP>
Date: Wed, 11-Nov-87 16:09:14 EST
Article-I.D.: hscfvax.470
Posted: Wed Nov 11 16:09:14 1987
Date-Received: Sun, 15-Nov-87 05:39:50 EST
References: <21410@cmcl2.NYU.EDU>
Organization: Health Sciences Computing Facility, Harvard University
Lines: 19
Keywords: modem

In article <21410@cmcl2.NYU.EDU>, andersnb@cmcl2.NYU.EDU (Brian Anderson) writes:
> 
> 	I am try to write a simple program that accesses my Hayes 1200 baud
> modem, instructing it to dial a number (no actual data communication
> is needed as the call will always be voice).  I am using MSC 4.0
> (no 5.0 yet!). I tried opening to the COM1 port and writing the 
> appropriate control strings, no luck.  I then tried using BIOS routines
> directly, again no luck.  The modem does not respond.

  Anyone trying something like the above may want to take a look at 

   C Programmer's Guide to Serial Communications
   by Joel Campbell

  The style tends to be "cute" at times.  And the writer appears to work for
  Hayes (with a resulting slant in the book).  But overall, it is a very use-
  ful text and contains a number of C routines for serial communications.

  greg pavlov, fstrf, amherst, ny.