Provided by: ax25-tools_0.0.8-13.1ubuntu1_i386 bug

NAME

       baycom - amateur (AX.25) packet radio network driver for baycom modems

SYNOPSIS

       #include <linux/baycom.h>
       #include <linux/hdlcdrv.h>

DESCRIPTION

       The  driver currently supports three different modems: ser12, par96 and
       par97.

   ser12
       This is a very simple 1200 baud AFSK modem. The modem consists only  of
       a  modulator/demodulator  chip,  usually  a TI TCM3105. The computer is
       responsible for regenerating the receiver bit clock. The modem connects
       to  a serial port, hence the name. Since the serial port is not used as
       an async serial port, the kernel driver  for  serial  ports  cannot  be
       used,  and  this  driver  only supports standard serial hardware (8250,
       16450, 16550).

   par96
       This is a modem for 9600 baud FSK compatible  to  the  G3RUH  standard.
       The  modem  does  all the filtering and regenerates the receiver clock.
       Data is transferred from and to the PC via a shift register.  The shift
       register  is  filled with 16 bits and an interrupt is signalled. The PC
       then empties the shift register in a burst. This modem connects to  the
       parallel port, hence the name.

   par97
       This is a redesign of the par96 modem by Henning Rech, DF9IC. The modem
       is protocol compatible to par96, but uses only three low power ICs  and
       can  therefore  be  fed  from the parallel port and does not require an
       additional power supply.

IOCTL CALLS

       The ioctl calls follow the implementation in the hdlcdrv.

       BAYCOMCTL_GETMODEMTYPE
              returns the modem type (i.e. ser12 or par96) and the options  in
              effect (currently only the source of the DCD signal)

       BAYCOMCTL_SETMODEMTYPE
              sets the modem type and the options. Only superuser can do this.

       BAYCOMCTL_GETDEBUG
              return some debugging values. Not always available.

SEE ALSO

       baycom (9), soundmodem (9), linux/drivers/net/hdlcdrv.c,

AUTHOR

       baycom    was    written    by     Thomas     Sailer,     HB9JNX/AE4WA,
       (sailer@ife.ee.ethz.ch).