NF Z66-500*NF ISO 7776:1987 Information systems. Data communication. High-level data link control procedures. Description of the X.25 lapb-compatible dte data link procedures.
1987NF Z66-500*NF ISO 7776:1987 Information systems. Data communication. High-level data link control procedures. Description of the X.25 lapb-compatible dte data link procedures.