ITU-T X.211-1988 Physical Service Definition of Open Systems Interconnection for CCITT Applications - Data Communication Networks - Open Systems Interconnection (OSI) Model and Notation, Service Definition Study Group VII; 19 pp; Corrigendum-Oct 1992
This Recommendation is one of a set of Recommendations produced to facilitate the interconnection of information processing systems.
ITU-T X.211-1988 history
1995ITU-T X.211-1995 Information Technology - Open Systems Interconnection - Physical Service Definition - Data Networks and Open System Communications Open Systems Interconnection - Service Definitions 30 pp
1988ITU-T X.211-1988 Physical Service Definition of Open Systems Interconnection for CCITT Applications - Data Communication Networks - Open Systems Interconnection (OSI) Model and Notation, Service Definition Study Group VII; 19 pp; Corrigendum-Oct 1992