o  client

    Name of the client using the port.

 o  logical station

    hdlc link logical station entity that the port is operating over.

 o  protocol id

    Protocol ID that the port is using. For sequenced ports, this
    value is decided during negotiation. For unsequenced ports, the
    value is sent in every UI-frame.

 o  state

    State of the port.

    open           The port is assigned to a client. If the
                   communications line is unswitched, data transfer
                   can begin. For switched lines, an association must
                   be made with the line before data transfer can
                   begin.

    open           The port is associated with a client, but the link
    disabled       or logical station associated with it is disabled.

 o  type

    Type of port.

    sequenced      The port can send and receive sequenced and
                   unsequenced data.

    unsequenced    The port can send and receive unsequenced data
                   only.