Заменен на ISO/IEC 8885(1993.12)
 

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Завершение срока действия 01.12.1993
Опубликован 01.01.1992

Information technology; telecommunications and information exchange between systems; high-level data link control (HDLC) procedures; general purpose XID frame information field content and format; amendment 4: extended tranparency options for start/stop transmission