Standard No.:	YD/T 1254-2003
English Name:	Access network technical specification-TDD based Ethernet Digital Subscriber Line system (TDD-EDSL):variable length frame transmission mode
Chinese Name:	接入网技术要求——基于时分双工的以太数字用户线系统(TDD-EDSL):可变长度帧传送模式
Chinese Classification:	M4
Professional Classification:	YD    Professional Standard - Telecommunication
ICS Classification:	33.040.50 33.040.50    Lines, connections and circuits 33.040.50
Issued by:	Ministry of Information Industry
Issued on:	2003-01-28
Implemented on:	2003-1-28
Status:	valid
Language:	English
File Format:	PDF
Word Count:	21000 words
Price(USD):	630.00
Delivery:	via email in 1~3 business day

本标准规定了基于时分双工方式采用可变长度帧传送模式的以太数字用户线系统的接口、功能、性能、网管与协议等要求。本标准适用运行于接入网现有铜线设施和用户驻地布线系统中混合线规的金属双绞线上的采用时分双工技术，在一对双绞线上支持分组数据业务和话带业务运行的设备。