CLIENT Name of the client using the port. LOGICAL STATION hdlc link logical station entity that the port is operating over. 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. 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 DISABLED - The port is associated with a client, but the link or logical station associated with it is disabled. 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.