1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T G.806 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Corrigendum 3 (08/2017) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks General aspects Characteristics of transport equipment De
2、scription methodology and generic functionality Corrigendum 3 Recommendation ITU-T G.806 (2012) Corrigendum 3 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL
3、ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449
4、COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 General aspects G.800G.809 Design objectives for digital networks G.810G.819 Synchronization, quality and
5、availability targets G.820G.829 Network capabilities and functions G.830G.839 SDH network characteristics G.840G.849 Management of transport network G.850G.859 SDH radio and satellite systems integration G.860G.869 Optical transport networks G.870G.879 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G
6、.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer
7、to the list of ITU-T Recommendations. Rec. ITU-T G.806 (2012)/Cor.3 (08/2017) i Recommendation ITU-T G.806 Characteristics of transport equipment Description methodology and generic functionality Corrigendum 3 Summary Corrigendum 3 to Recommendation ITU-T G.806 updates: Table 7-1 to correct the defa
8、ult values for MI_DEGTHR and MI_DEGM. Clause 5.6.3 and Table 7-1 for the use of MI_Active. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.806 2000-10-06 15 11.1002/1000/5176 1.1 ITU-T G.806 (2000) Amd. 1 2003-03-16 15 11.1002/1000/6267 2.0 ITU-T G.806 2004-02-06 15 11.100
9、2/1000/7062 2.1 ITU-T G.806 (2004) Amd. 1 2004-06-13 15 11.1002/1000/7334 2.2 ITU-T G.806 (2004) Cor. 1 2004-08-22 15 11.1002/1000/7333 2.3 ITU-T G.806 (2004) Cor. 2 2005-01-13 15 11.1002/1000/7481 3.0 ITU-T G.806 2006-03-29 15 11.1002/1000/8760 3.1 ITU-T G.806 (2006) Amd. 1 2008-11-22 15 11.1002/10
10、00/9373 4.0 ITU-T G.806 2009-01-13 15 11.1002/1000/9649 4.1 ITU-T G.806 (2009) Amd. 1 2011-06-22 15 11.1002/1000/11119 5.0 ITU-T G.806 2012-02-13 15 11.1002/1000/11490 5.1 ITU-T G.806 (2012) Cor. 1 2012-10-29 15 11.1002/1000/11780 5.2 ITU-T G.806 (2012) Cor. 2 2016-04-13 15 11.1002/1000/12791 5.3 IT
11、U-T G.806 (2012) Cor. 3 2017-08-13 15 11.1002/1000/13300 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/11830-en. ii Rec. ITU-T G.806 (2012)/Cor.3
12、 (08/2017) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsib
13、le for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T
14、 study groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative b
15、asis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandato
16、ry provisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The
17、use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes n
18、o position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property,
19、 protected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2017 All rights reserved. No
20、part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.806 (2012)/Cor.3 (08/2017) 1 Recommendation ITU-T G.806 Characteristics of transport equipment Description methodology and generic functionality Corrigendum 3 1) Scope of Co
21、rrigendum 3 Corrigendum 3 to Recommendation ITU-T G.806 updates Table 7-1 to correct the default values for MI_DEGTHR and MI_DEGM and clause 5.6.3 and Table 7-1 for the use of MI_Active. 2) Clause 5.6.3, Adaptation function Update the paragraph for selection (i.e., MI_Active) as indicated: In the ca
22、se where multiple adaptation functions are connected to the same AP and accessing the same time slots (bits/bytes), a selection process controls the actual access to the AP. In the atomic functions, this is modelled via the activation/deactivation signal (MI_Active). In the case where only one adapt
23、ation function is present, it is selected. Control is not required. Examples are STM-N multiplex section to Sn layer adaptation in ITU-T G.783 and P0G32 to P0 layer adaptation function in ITU-T G.705. 3) Clause 7, Information flow (XXX_MI) across the XXX_MP reference points Update Table 7-1 as indic
24、ated: Table 7-1 Generic command, configuration, provisioning and reporting information flow over the XXX_MP reference points Management point Process within atomic function Input (“Set“) Output (“Get“) TT_So_MP Trace identifier Transmitted trail trace identifier (MI_TxTI) value TT_Sk_MP Termination
25、point/port mode Termination point mode control (MI_TPmode: MON, NMON) Port mode control (MI_Portmode: MON, (AUTO), NMON) Continuity supervision Signal loss fault cause (MI_cLOS, MI_cUNEQ, MI_cLTC) Connectivity supervision Expected trail trace identifier (MI_ExTI) value Misconnected traffic defect de
26、tection control (MI_TIMdis: true, false) Enable/disable AIS insertion on dTIM detection (MI_TIMAISdis: true, false) Accepted (received) trail trace identifier value (MI_AcTI) Misconnected traffic fault cause (MI_cTIM) 2 Rec. ITU-T G.806 (2012)/Cor.3 (08/2017) Table 7-1 Generic command, configuration
27、, provisioning and reporting information flow over the XXX_MP reference points Management point Process within atomic function Input (“Set“) Output (“Get“) Signal quality supervision Poisson-based excessive defect threshold selection (MI_EXC_X: 103,104, 105) Poisson-based degraded defect threshold s
28、election (MI_DEG_X: 105, 106, 107, 108, 109) Poisson-based excessive errors fault cause (MI_cEXC) Poisson-based degraded errors fault cause (MI_cDEG) Burst-based degraded defect interval threshold selection (MI_DEGTHR: 0(SES estimator 30)100% or 0.N) (Note 2) Burst-based degraded defect monitor peri
29、od selection (MI_DEGM: 2(7)10) (Note 4) Burst-based degraded errors fault cause (MI_cDEG) Maintenance signals processing AIS fault cause reporting control (MI_AIS_Reported: true, false) AIS fault cause (MI_cAIS, MI_cIncAIS) SSF fault cause reporting control (MI_SSF_Reported: true, false) SSF fault c
30、ause (MI_cSSF) RDI fault cause reporting control (MI_RDI_Reported: true, false) RDI fault cause (MI_cRDI) ODI fault cause reporting control (MI_ODI_Reported: true, false) ODI fault cause (MI_cODI) Performance monitoring 1 second period indications (MI_1second) Performance monitoring primitives (MI_p
31、N_EBC, MI_pN_DS, MI_pF_EBC, MI_pF_DS, .) A_So_MP Selection Payload composition selection (MI_Active: true, false) (Note 5) Performance monitoring Performance monitoring justification actions (MI_pPJC+, MI_pPJC) A_Sk_MP Selection Payload composition selection (MI_Active: true, false) (Note 5) Mainten
32、ance signal processing AIS fault cause reporting control (MI_AIS_Reported: true, false) AIS fault cause (MI_cAIS) Payload type supervision Accepted (received) payload type value (MI_AcSL) Miscomposed traffic fault cause (MI_cPLM) Alignment supervision Alignment loss fault cause (MI_cLOF, MI_cLOM, MI
33、_cLOP) Rec. ITU-T G.806 (2012)/Cor.3 (08/2017) 3 Table 7-1 Generic command, configuration, provisioning and reporting information flow over the XXX_MP reference points Management point Process within atomic function Input (“Set“) Output (“Get“) Connection management Matrix connection selection C_MP
34、Protection Protection group selection (set of connection points, protection architecture: 1+1/1:n/m:n, switching type: uni/bidirectional, operation type: revertive/non-revertive, APS usage: true/false, extra traffic: true/false) External switch commands (MI_ExtCmd: LO, FS, MS, EXER, CLR) External co
35、ntrol command (LOW) Hold off time value (MI_HOtime) WaitToRestore value (MI_WTRtime: 0(5)12 minutes) (Note 3) Protocol fault cause (MI_cFOP) Protection status (for further study) NOTE 1 Underlined values are suggested defaults. NOTE 2 For higher rate interfaces, this default is undefined. Values les
36、s than 1% will need to be supported. NOTE 3 The value of 0 for WTR is intended to be used for testing purposes only. It is not recommended for use in operational networks. NOTE 4 Equipment designed prior to the 2016 version of G.806 may use a default MI_DEGTHR value of 30% and of MI_DEGM of 10. NOTE
37、 5 This attribute is modelled for ITU-T G.783 and ITU-T G.705. It is set true only when multiple adaptation functions are connected to the same AP and accessing the same time slots (bits/bytes). Printed in Switzerland Geneva, 2017 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of
38、ITU-T Series D Tariff and accounting principles and international telecommunication/ICT economic and policy issues Series E Overall network operation, telephone service, service operation and human factors Series F Non-telephone telecommunication services Series G Transmission systems and media, dig
39、ital systems and networks Series H Audiovisual and multimedia systems Series I Integrated services digital network Series J Cable networks and transmission of television, sound programme and other multimedia signals Series K Protection against interference Series L Environment and ICTs, climate chan
40、ge, e-waste, energy efficiency; construction, installation and protection of cables and other elements of outside plant Series M Telecommunication management, including TMN and network maintenance Series N Maintenance: international sound programme and television transmission circuits Series O Speci
41、fications of measuring equipment Series P Telephone transmission quality, telephone installations, local line networks Series Q Switching and signalling, and associated measurements and tests Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telema
42、tic services Series U Telegraph switching Series V Data communication over the telephone network Series X Data networks, open system communications and security Series Y Global information infrastructure, Internet protocol aspects, next-generation networks, Internet of Things and smart cities Series Z Languages and general software aspects for telecommunication systems
