DM>> Depends on your OS. For example, under Linux, OS/2, and likely
 DM>> Win32, fopen would work. Under DOS, however, you need to either
 DM>> get a com port library, learn how to use a FOSSIL, or learn how
 DM>> to deal with the serial port on a low level (via
 DM>> outportb/inportb).
 GD> Not so. The following works just fine under DOS:
 GD> void offhook( void )
 GD> {
 GD>   FILE *port ;
 GD>   port = fopen( "COM1", "w" );
 GD>   fprintf( port, "ATM0H1\n" );
 GD>   fclose( port );
 GD> }
 AZ> And how can I get responses ?
For *that* you will need a COMM library, I would think.
Gerry Danen (gdanen@connect.ab.ca) C+Net BBS @ 403-477-9545
            http://www.geocities.com/SiliconValley/Way/9823
      Moderator STN.Y2K: Year 2000 information & discussion
1 year, 339 days, 1 hour, 32 minutes, and 52 seconds until January 1, 2000.
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