Standard No.:	GB/T 7496-1987
English Name:	Information processing systems--Data communication--High-level data link control procedures--Frame structure
Chinese Name:	信息处理系统-数据通信-高级数据链路控制规程-帧结构
Chinese Classification:	L78    Data information
Professional Classification:	GB    National Standard
ICS Classification:	35.100.20 35.100.20    Data link layer 35.100.20
Issued by:	National Bureau of Standards
Issued on:	1987-03-02
Implemented on:	1987-11-1
Status:	superseded
Superseded by:	GB/T 7421-2008 Information technology - Telecommunications and information exchange between systems - High-level data link control (HDLC) procedures
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	340.00
Delivery:	via email in 1~3 business day

本标准为采用面向比特的高级数据链路控制规程（HDLC）的数据通信系统规定了帧结构。它定义了帧的各部分的相对位置和作帧定界序列(标志)用的比特组合。它还定义了一种使帧内比特模式具有独立性的机制。此外，还规定了两种帧检验序列（FCS），定义了地址字段的扩充规则，并描述了所有的编址约定。控制字段的编码和格式在其他国家标准中定义。