An NSP Port entity represents one end of a transport connection and
     maintains status information about that connection. A port is visible to
     the network only when it is assigned to a transport connection.

1  –  counter

     DUPLICATE PDUS RECEIVED

        Number of all types of detected duplicate transport PDUs received from
        the remote service provider.

     PDUS RECEIVED

        Number of all types of transport PDUs received from the remote service
        provider excluding detected duplicates.

     PDUS SENT

        Number of all types of transport PDUs sent to the remote service
        provider excluding retransmissions.

     RETRANSMITTED PDUS

        Number of all types of retransmitted transport PDUs sent to the remote
        service provider.

     TOTAL OCTETS RECEIVED

        Number of octets of all types of transport PDUs received from the remote
        service provider, regardless of their disposition. This count includes
        detected duplicates.

     TOTAL OCTETS SENT

        Number of octets of all types of transport PDUs sent to the remote
        service provider, including retransmissions.

     USER OCTETS RECEIVED

        Number of user data octets received from the remote service provider,
        including normal, expedited, connect, accept, and disconnect data. This
        count does not include duplicates such as data retransmitted by the
        remote service provider.

     USER OCTETS SENT

        Number of user data octets sent to the remote service provider,
        including normal, expedited, connect, accept, and disconnect data. This
        count does not include data retransmitted by the local service provider.

     USER PDUS RECEIVED

        Number of transport PDUs containing user data received from the remote
        service provider, including normal, expedited, connect, accept, and
        disconnect data. This count does not include duplicates such as
        transport PDUs retransmitted by the remote service provider.

     USER PDUS SENT

        Number of transport PDUs containing user data sent to the remote service
        provider, including normal, expedited, connect, accept, and disconnect
        data. This count does not include retransmitted transport PDUs.

2  –  status

     CLIENT NAME

        Name designated by the port user when the port was opened.

     LOCAL NSAP

        Local NSAP address being used for the transport connection.

     LOCAL REFERENCE

        Unique reference number assigned to the transport connection by the
        local transport service provider.

     NETWORK PORT

        Name of the port being used.

     REMOTE NSAP

        Remote NSAP address being used for the transport connection.

     REMOTE REFERENCE

        Reference number assigned to the transport connection by the remote
        transport service provider.

     ROUNDTRIP DELAY ESTIMATE

        Amount of time, in milliseconds, of the roundtrip delay on the transport
        connection.  Applicable only when operating class 4 protocol.