Standard No.:	YD/T 1266-2003
English Name:	Test methods of protection schemes for SDH rings
Chinese Name:	SDH环网保护倒换测试方法
Chinese Classification:	M15    Communication network performance index and testing
Professional Classification:	YD    Professional Standard - Telecommunication
ICS Classification:	33.040.20 33.040.20    Transmission systems 33.040.20
Issued by:	Ministry of Information Industry
Issued on:	2003-06-05
Implemented on:	2003-6-5
Status:	valid
Language:	English
File Format:	PDF
Word Count:	25500 words
Price(USD):	765.00
Delivery:	via email in 1~3 business day

本标准规定了SDH环网保护倒换的测试方法。本标准适用于对单端通道倒换环（又称为高阶/低阶子网连接1+1保护环）、两纤复用段共享保护环、四纤复用段共享保护环以及双节点环间互连的测试方法，双端通道倒换环、复用段专用保护环和复用段共享保护环越洋应用情况以及网状网中的逻辑拓扑环的测试均不在本标准的规定范围之内。本标准适用于SDH工程验收以及维护测试，设备验收的部分项目也可参照使用。