GB/T 16712-2008 English PDFGB/T 16712: Historical versions
Basic dataStandard ID: GB/T 16712-2008 (GB/T16712-2008)Description (Translated English): Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: M33 Classification of International Standard: 33.040.20 Word Count Estimation: 219,252 Date of Issue: 2008-10-07 Date of Implementation: 2009-04-01 Older Standard (superseded by this standard): GB/T 16712-1996 Adopted Standard: ITU-T G.783-2006, NEQ Regulation (derived from): Announcement of Newly Approved National Standards No. 17 of 2008 (No. 130 overall) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the synchronous digital hierarchy (SDH) equipment functional blocks. Synchronous Digital Hierarchy (SDH) equipment functional blocks shown in Figure 1 the total. In this standard functional definition applies to SDH- user network interface (UNI) and Network Node Interface (NNI). This standard applies to transmission network system equipment, as defined in this standard are not all of the blocks are necessary for each application. You can choose the standard function blocks different subsets, according to the standard rules given in combination, in different ways to provide different combinations of device functions. Network operators and equipment manufacturers can choose to implement some applications to choose which features required. This standard applies to the use of public telecommunication SDH systems, dedicated telecommunications network may also refer to the use of similar systems. GB/T 16712-2008: Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order. Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks ICS 33.040.20 M33 National Standards of People's Republic of China Replacing GB/T 16712-1996 Synchronous Digital Hierarchy (SDH) equipment functional blocks (ITU-TG.783.2006, NEQ) Posted 2008-10-07 2009-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released Table of ContentsPreface Ⅰ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 Abbreviations 10 Description 17 5 Conventions Monitoring 17 6 7 through XXX_MP reference point of information flow (XXX_MI) 19 8 general-purpose processing 19 9 STM-N physical segment layer (N = 1,4,16,64,256) 23 10 STM-N regenerator section layer (N = 1,4,16,64,256) 33 11 STM-N multiplex section layer (N = 1,4,16,64,256) 48 12 VC-n channels (Sn) layer (n = 4-X, 4,3-X, 3) 82 13 VC-m channel (Sm) layer (m = 12) 148 14 timer 194 15 195 jitter and wander specifications 16 overhead access function (OHA) 205 Appendix A (normative appendix) F1 byte usage examples 206 Appendix B (normative) data communication path (DCC) 207 Appendix C (Normative Appendix) STM-16 regenerator functional model 208 Annex D (normative appendix) STM-N transparent regenerator 209 Appendix E (Normative Appendix) SDH equipment CID defense degree of verification 210 Annex F (normative) enhanced remote defect indication operation 212 Annex G (normative appendix) STM-64 regenerator jitter accumulation analysis and hypothetical reference model (HRM) 213ForewordThis standard corresponds to ITU-TG. 783.2006 "feature equipment functional blocks Synchronous Digital Hierarchy (SDH)". This standard ITU-T G. 783.2006 non-equivalent degree of consistency, the main differences are as follows. --- Rearrange the ITU-TG. 783 related content. Taking into account this standard is to describe the function of multiplexing equipment, omitted ITU-TG. 783 relating to the pointer detection algorithm in Appendix I. --- In view of SDH multiplexing structure of the AU-4 path and provided only 2M, 34M and 140M three kinds tributary interface, this standard No selection of the route and tributary interface independent containers, empty containers. This standard replaces GB/T 16712-1996 "Synchronous Digital Hierarchy (SDH) multiplex equipment." This standard and GB/T 16712-1996 compared to the main changes are as follows. --- Modify the standard name is "synchronous digital hierarchy (SDH) equipment functional blocks"; --- Increasing the ITU-TG. 783 corresponding MSP protocol, command and switching operations. The Standard Appendix A, Appendix B, Appendix C, Appendix D, Appendix E, Appendix F and Appendix G are normative appendix. The standard proposed by the Ministry of Industry and Information Technology of the People's Republic of China. The standard by the China Communications Standards Association. This standard was drafted. Wuhan Research Institute of Posts and Telecommunications. Drafters of this standard. HE Yan, Lü new, Zhang Jijun, Yanyan Fen, Liu Hongjie, Wang Junfang, Li Tao, still strong, Meng Xiang, Zhang Yan. This standard replaces the standards previously issued as follows. --- GB/T 16712-1996. Synchronous Digital Hierarchy (SDH) equipment functional blocks1 ScopeAt the source, the normal traffic signal is connected to the working and protection transport entities two permanent bridge. In sink, select from the two transport entities representing Good a normal traffic signal. Since the permanent bridge, the 1 + 1 architecture is not allowed to provide an unprotected extra traffic signal. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 16712-2008_English be delivered?Answer: Upon your order, we will start to translate GB/T 16712-2008_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 16712-2008_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 16712-2008_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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