ttydefs(4)                       DG/UX R4.11                      ttydefs(4)


NAME
       ttydefs - terminal line settings information for ttymon

SYNOPSIS
       /etc/ttydefs

DESCRIPTION
       /etc/ttydefs is an administrative file that contains information used
       by ttymon(1M) to set up the speed and terminal settings (i.e., the
       line discipline) for a TTY port.  The sttydefs(1M) command maintains
       the contents of this file.

       Each set of speed and terminal settings is represented by a single
       line in the file, separated by colons into fields as described below.
       In addition, comment lines beginning with a pound sign (#) are
       supported; blank lines for readability are supported, too.  The file
       begins with the following version number line:

            # VERSION=1

       The settings lines of the ttydefs file have the following format:

              ttylabel:initial-flags:final-flags:autobaud:nextlabel

       where the fields are as follows:

       ttylabel       The string a TTY port monitor will attempt to match
                      against the TTY port's ttylabel field in the port
                      monitor's administrative file.  It typically describes
                      the speed at which the terminal is supposed to run,
                      for example, 9600.

       initial-flags  The initial termio(7) settings to which the line
                      discipline is to be set.  For example, the system
                      administrator can specify what the default ERASE and
                      KILL characters will be.  initial-flags must be
                      specified in the syntax recognized by the stty(1)
                      command.

       final-flags    The final termio(7) settings to which the line
                      discipline is to be set after a connection request has
                      been made and immediately prior to invoking a port's
                      service.  final-flags must be specified in the same
                      format as initial-flags.

       autobaud       If the autobaud field contains the character `A',
                      autobaud will be enabled.  Otherwise, autobaud will be
                      disabled.  If autobaud is enabled, the TTY port
                      monitor will determine the line speed for the TTY port
                      by analyzing carriage returns entered at the terminal.

       nextlabel      This field was used to link ttydefs entries together
                      into a hunt sequence in order to determine the baud
                      rate.  Currently, baud rate determination is provided
                      by the autobaud feature instead (see above); the hunt
                      sequence feature is no longer supported.

FILES
       /etc/ttydefs   TTY definitions file

SEE ALSO
       stty(1), sttydefs(1M), ttymon(1M), termio(7)

       Managing the DG/UX System

NOTES
       The contents of this file are subject to change in future releases.
       The version number (currently 1) will be updated in conjunction with
       any such changes.


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