$home/manuals/unix_v7/4/dn

DN(4)                      Kernel Interfaces Manual                      DN(4)



NAME
       dn - DN-11 ACU interface

DESCRIPTION
       The dn?  files are write-only.  The permissible codes are:

       0-9    dial 0-9
       :      dial *
       ;      dial #
       -      4 second delay for second dial tone
       <      end-of-number

       The  entire telephone number must be presented in a single write system
       call.

       It is recommended that an end-of-number code be given even  though  not
       all ACU's actually require it.

FILES
       /dev/dn0  connected to 801 with dp0
       /dev/dn1  not currently connected
       /dev/dn2  not currently connected

SEE ALSO
       dp(4)



                                                                         DN(4)