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ISO/IEC 7809:1993

Information technology - Telecommunications and information exchange between systems - High-level data link control (HDLC) procedures - Classes of procedures

Describes the HDLC unbalanced classes of procedures, the HDLC balanced class of procedures, and the HDLC connectionless classes of procedures for synchronous or start/stop data transmission. The procedures use the HDLC frame structure defined in ISO/IEC 3309 and the HDLC elements of procedures described in ISO/IEC 4335.

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ISO/IEC 4335:1993
Information technology -- Telecommunications and information exchange between systems - High-level data link control ...
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ISO/IEC 3309:1993
Information technology - Telecommunications and information exchange between systems - High-level data link control ...
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ISO/IEC 4335/AMD6:1995
Amendment 6 to ISO/IEC 4335:1993 Extension of HDLC sequence number modulus beyond 128
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