GB/T 16712-2008
Characteristics of synchronous digital hierarchy(SDH) equipment functional blocks (English Version)

Standard No.

GB/T 16712-2008

Language

Chinese, Available in English version

Release Date

2008

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 16712-2008

Replace

GB/T 16712-1996

Scope

This standard specifies the functional block characteristics of Synchronous Digital Hierarchy (SDH) equipment. The general diagram of the functional blocks of the Synchronous Digital Hierarchy (SDH) equipment is shown in Figure 1. The functional definitions in this standard apply to SDH User Network Interface (UNI) and Network Node Interface (NNI). This standard is applicable to transport network system equipment, not all functional blocks defined in this standard are suitable for every application necessary. Different subsets of function blocks in this standard can be selected, and combined in different ways to provide different equipment functions according to the combination rules given in this standard. Network operators and equipment manufacturers can choose which functions are required to implement a certain application. This standard applies to SDH systems used in public telecommunication networks, and similar systems in private telecommunication networks can also be used as a reference.

GB/T 16712-2008 Referenced Document

• GB/T 13997-1999 Technical requirement for 2048kbit/s, 8448kbit/s, 34368kbit/s, 139264kbit/s Optical line terminals
• GB/T 20185-2006 Optical interface requirements for equipments and systems relating to the synchronous digital hierarchy
• ITU-T G.664 Optical safety procedures and requirements for optical transmission systems (Study Group 15)*， 2012-02-01 Update
• ITU-T G.691 Optical interfaces for single channel STM-64 and other SDH systems with optical amplifiers
• ITU-T G.704 Synchronous Frame Structures Used at 154463122048 8448 and 44 736 kbit/s Hierarchical Levels - Series G: Transmission Systems and Media Digital Systems and Networks Digital Transmission Systems - Terminal Equipments - General Study Group 15; 44 pp
• ITU-T G.707 Network node interface for the synchronous digital hierarchy (SDH) Amendment 2 (Study Group 15)*， 2024-04-19 Update
• ITU-T G.709 Interfaces for the optical transport network (Study Group 15)*， 2016-06-01 Update
• ITU-T G.805 Generic Functional Architecture of Transport Networks Series G: Transmission Systems and Media Digital Systems and Networks Digital Networks - General Aspects Study Group 13
• ITU-T G.806-2006 Characteristics of transport equipment ?Description methodology and generic functionality Study Group 15
• ITU-T G.813 Timing characteristics of SDH equipment slave clocks (SEC) SERIES G: TRANSMISSION SYSTEMS AND MEDIA@ DIGITAL SYSTEMS AND NETWORKS Digital networks – Design objectives for digital networks (Study Group 15)
• ITU-T G.825 The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH) (Study Group 13)
• ITU-T G.8251 *， 2018-11-01 Update
• ITU-T G.841 Types and Characteristics of SDH Network Protection Architectures Series G: Transmission Systems and Media, Digital Systems and Networks Digital networks - SDH network characteristics Study Group 15; Corrigendum
• ITU-T G.958 Digital Line Systems Based on the Synchronous Digital Hierarchy for Use on Optical Fibre Cables - Digital Sections and Digital Line Systems (Study Group 15) 25 pp
• ITU-T I.732 Functional Characteristics of ATM Equipment Series I: Integrated Services Digital Network B-ISDN Equipment Aspects - ATM Equipment Study Group 15*， 2024-04-19 Update

GB/T 16712-2008 history

• 2008 GB/T 16712-2008 Characteristics of synchronous digital hierarchy(SDH) equipment functional blocks
• 1996 GB/T 16712-1996 Specifications for Synchronous Digital Hierarchy (SDH) multiplex equipment