man(1) Manual page archive

     DK(4)                        (local)                        DK(4)

          dk - Datakit interface

          A Datakit node consists of a fast digital switch and a
          number of line modules.  Line modules are interfaced to
          computers, terminals, other digital devices.  Certain line
          modules, referred to as trunks, connect Datakit nodes
          together.  Each module may communicate with other modules
          through the switch on up to 510 logical channels.

          The directory /dev/dk consists of character special files,
          each one associated with a logical channel.