A Comparison of SONET (Synchronous Optical NETwork) and SDH (Synchronous Digital Hierarchy)
SONET（同步光网络）与SDH（同步数字体系）的比较

1994-05-01

军用SDH传送网技术规范
Technical specifications for military optical synchronous digital hierarchy (SDH) transport network

2003-06-04

同步数字体系（SDH）光缆线路系统进网要求
Requirements for Synchronous Digital hierarchy (SDH) Optical Fiber Cable Line Systems

2008-04-10

同步数字体系（SDH）光纤传输系统工程验收标准
Standrad for engineering acceptance of synchronous digital hierarchy (SDH) optical fiber transmission system

2018-01-16

同步数字体系（SDH）光纤传输系统工程设计规范
Design Specification for Synchronous Digital Hierarchy(SDH)Optical Fiber Transmission System Project

2014-05-06

同步数字体系（SDH）光纤传输系统工程验收规范
Acceptance Specification for Synchronous Digital Hierarchy (SDH) Optical Fiber Transmission System Engineering

2014-05-06

同步数字体系（SDH）光纤传输系统工程设计规范
Code for engineering design of synchronous digital hierarchy(SDH)optical fiber transmission system

2017-05-27

Jitter and wander measuring equipment for digital systems which are based on the synchronous digital hierarchy (SDH)
基于同步数字体系（SDH）的数字系统抖动和漂移测量设备

2005-04-13

Jitter and wander measuring equipment for digital systems which are based on the synchronous digital hierarchy (SDH)
基于同步数字体系（SDH）的数字系统抖动和漂移测量设备

2005-04-13

SDH数字微波通信设备和系统技术要求及测试方法
Technical requirements and test methods for digital microwave telecommunication equipments and systems of synchronous digital hierarchy(SDH)

2013-04-25

Transmission and multiplexing (TM) - Optical interfaces for equipments and systems relating to the synchronous digital hierarchy (SDH) [ITU-T Recommendation G.957 (1995) modified] (Endorsement of the English version ETS 300232:1993 + A1:1996 as German standard)
传输和多路复用（TM）.与同步数字体系（SDH）有关的设备和系统的光学接口[ITU-T建议G.957（1995）修改]（认可英文版ETS 300232:1993+A1:1996作为德国标准）

2000-06-01