BS ISO/IEC BRITISH STANDARD TR 9572:1989 Implementation of ISO/IEC TR 9572:1989 Information technology - Open Systems Interconnection : LOTOS description of the session protocol BSi BS ISO/IEC TR 9572:1989 Committees responsible for this British Standard tional Training Council, Vocational Training Council, Version correct as of 17/10/2017 The preparation of this British Standard was entrusted by the Information Technology Systems Standards Policy Committee (IST/-) to Technical Committee IST/21, upon which the following bodies were represented: Association for Payment Clearing Services British Computer Society British Gas plc British Railways Board British Telecommunications plc Computing Services Association Department of Trade and Industry (Alvey - Advanced Network Systems Architecture) Department of Trade and Industry (Information Technology Division) Department of Trade and Industry (National Physical Laboratory) EEA the Electronics and Business Equipment Association HM Treasury - Central Computer and Telecommunications Agency Institute of Chartered Secretaries and Administrators Institution of Electrical Engineers Inter-universities Computing Committee Joint Network Team Mercury Communications Limited Ministry of Defence National Health Service Post Office United Kingdom Atomic Energy Authority University of London Computer Centre eo This British Standard, having been prepared under the direction of the Information Technology Systems Standards Policy committee, was published under the authority of theBoardofBSIandcomes into effect on Amendments issued since publication 30 November 1990 Comments S Amd. No. Date BSI 05-2000 The following BSI references relate to the work on this standard: Committee reference IST/21 Draft for comment 90/65606 DC ISBN 0 580 19147 8 BS ISO/IEC TR 9572:1989 Contents Page Committees responsible Inside front cover National foreword ii ii Foreword Text of ISO/IEC TR 9572 1 @BSI05-2000 1