High-level data link control (HDLC) procedures - ITU-T X.25 LAPB-compatible data link procedures for data terminal equipment; identical with ISO/IEC 7776:1995
Electrical equipment of industrial machines - Serial data link for real-time communication between controls and drives (IEC 61491:1995, modified); German version EN 61491:1998— 206 стр.
Telecontrol equipment and systems - Part 6: Telecontrol protocols compatible with ISO standards and ITU-T recommendations; section 2: Use of basic standards (OSI layers 1-4) (IEC 60870-6-2:1995); German version EN 60870-6-2:1995— 28 стр.
High-level data link control procedures, HDLC; CCITT X.25 LAPB-compatible data link procedures for data terminal equipment; identical with ISO 7776:1986 (status as of 1989)— 31 стр.
