SIS SS-ISO 4335-1989 信息处理系统．数据传递．高级数据链路控制（HDLC）程序元件

标准号：SIS SS-ISO 4335-1989
中文标准名称：信息处理系统．数据传递．**数据链路控制（HDLC）程序元件
英文标准名称：Information processing systems — Data communication — HDLC elements of procedures
发布日期：1989/2/15 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This International Standard specifies elements of data link con-trol procedures for synchronous, code-transparent data transmission using the HDLC frame structure specified in ISO 3309 and independent frame numbering in both directions.These HDLC elements of procedures are defined specifically in terms of the actions that occur on receipt of commands at a secondary station or a combined station.This International Standard is intended to cover a wide range of applications; for example one-way, two-way alternate or two-way simultaneous data communication between data stations which are usually buffered, including operations on different types of data circuits; for example multipoint/point-to-point, duplex/half-duplex, switched/non-switched, etc.The defined HDLC elements of procedures are to be considered as a common basis for establishing different types of control procedures. This International Standard does not define any single system and should not be regarded as a specification for a data communication system. Not all of the commands or responses are required for a particular system implementation.