Standard No.:	YD/T 770-1995
English Name:	Networking requirement for optical cable communication direct transmission recovery systems
Chinese Name:	光缆通信直接传输恢复系统进网要求
Chinese Classification:	M33    Optical communication equipment
Professional Classification:	YD    Professional Standard - Telecommunication
Issued by:	Ministry of Posts and Telecommunications
Issued on:	1995-08-21
Implemented on:	1996-2-1
Status:	abolished
Abolished on:	2009-12-01
Language:	English
File Format:	PDF
Word Count:	3500 words
Price(USD):	100.00
Delivery:	via email in 1~3 business day

范围：本标准规定长途光缆（地理和架空）通信系统设立自动直接传输恢复系统的技术要求。包括传输恢复功能与控制功能；传输恢复的方法；接口和传输特性等。本标准主要适用于ＰＤＨ系统；除公用长途干线电信网以外，本地公用电信网及专用电信网的光缆通信系统的保护倒换系统也可参照使用。