1、 International Telecommunication Union ITU-T G.7041/Y.1303TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 1(02/2012) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Data over Transport Generic aspects General SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROT
2、OCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Transport Generic framing procedure Amendment 1 Recommendation ITU-T G.7041/Y.1303 (2011) Amendment 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AN
3、D CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL 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 SATELLI
4、TE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 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 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900
5、G.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 General G.7000G.7099Transport network control aspects G.7700G.7799 PACKET OVER TRANSPORT ASPECTS G.8000G.
6、8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.7041/Y.1303 (2011)/Amd.1 (02/2012) i Recommendation ITU-T G.7041/Y.1303 Generic framing procedure Amendment 1 Summary Amendment 1 to Recommendation ITU-T G.7041/Y.1303 (2011) specif
7、ies the not-operational primitive sequence (NOS) as the preferred replacement signal for both the single-byte command code sets connection/enterprise systems connection (SBCON/ESCON) and fibre channel signals in optical transport network (OTN) mapping. Legacy equipment may continue to use the replac
8、ement signals originally described in this Recommendation. History Edition Recommendation Approval Study Group 1.0 ITU-T G.7041/Y.1303 2001-12-14 15 1.1 ITU-T G.7041/Y.1303 (2001) Amd. 1 2002-06-13 15 1.2 ITU-T G.7041/Y.1303 (2001) Cor. 1 2003-03-16 15 1.3 ITU-T G.7041/Y.1303 (2001) Amd. 2 2003-03-1
9、6 15 2.0 ITU-T G.7041/Y.1303 2003-12-14 15 2.1 ITU-T G.7041/Y.1303 (2003) Amd. 2 2004-06-13 15 2.2 ITU-T G.7041/Y.1303 (2003) Amd. 1 2004-10-07 15 2.3 ITU-T G.7041/Y.1303 (2003) Cor. 1 2005-01-13 15 2.4 ITU-T G.7041/Y.1303 (2003) Amd. 3 2005-01-13 15 3.0 ITU-T G.7041/Y.1303 2005-08-22 15 3.1 ITU-T G
10、.7041/Y.1303 (2005) Amd. 1 2006-03-29 15 3.2 ITU-T G.7041/Y.1303 (2005) Cor. 1 2006-12-14 15 3.3 ITU-T G.7041/Y.1303 (2005) Amd. 2 2007-07-29 15 4.0 ITU-T G.7041/Y.1303 2008-10-07 15 4.1 ITU-T G.7041/Y.1303 (2008) Amd. 1 2009-01-13 15 4.2 ITU-T G.7041/Y.1303 (2008) Amd. 2 2010-07-29 15 5.0 ITU-T G.7
11、041/Y.1303 2011-04-13 15 5.1 ITU-T G.7041/Y.1303 (2011) Amd. 1 2012-02-13 15 ii Rec. ITU-T G.7041/Y.1303 (2011)/Amd.1 (02/2012) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technolo
12、gies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommu
13、nication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T 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
14、of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operat
15、ing agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory 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“
16、 or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the pract
17、ice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation develop
18、ment process. As of the date of approval of this Recommendation, ITU had received notice of intellectual property, 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 st
19、rongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2012 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.7041/Y.1303 (2011)/Amd.1 (02/2012) 1 Recommendation ITU-T G
20、.7041/Y.1303 Generic framing procedure Amendment 1 1) Scope This amendment specifies the not-operational primitive sequence (NOS) as the preferred replacement signal for both the single-byte command code sets connection/enterprise systems connection (SBCON/ESCON) and fibre channel signals in optical
21、 transport network (OTN) mapping. Legacy equipment may continue to use the replacement signals originally described in this Recommendation. 2) Modifications to Recommendation ITU-T G.7041/Y.1303 2.1) Table 6.3 Modify Table 6.3 as follows: Change payload type 0000 0101 from “Transparent ESCON“ to “Tr
22、ansparent ESCON/SBCON“. 2.2) Clause 8 In clause 8, first paragraph, second sentence, add the following note associated with the word “ESCON“: NOTE Throughout this clause, the term “ESCON“ is used to refer to both the ESCON and SBCON client signals. 2.3) Clause 8.3.1.3 Modify clause 8.3.1.3 as follow
23、s: 8.3.1.3 Fibre channel output due to ingress or transport signal fail Since the goal of transparent GFP mapping is to transport client signals as transparently as possible, it is not appropriate to initiate link initialization or link recovery procedures on egress due to client signal fail or tran
24、sport failures. It is recommended that the egress fibre channel transmitter continuously output the neutral disparity decoding for 10B_ERR, forcing loss-of-synchronization detection and the associated action at the downstream fibre channel receiver. Alternatively, the egress transmitter may generate
25、 the Not_Operational primitive sequence per clause 16.4.2 of ANSI INCITS 230. NOTE Older equipment was allowed to continuously output the neutral disparity decoding for 10B_ERR, forcing loss-of-synchronization detection and the associated action at the downstream fibre channel receiver. If the CSF c
26、ondition persists, the client adaptation process may transmit nothing, forcing LOS detection and associated action at the downstream fibre channel receiver. 2 Rec. ITU-T G.7041/Y.1303 (2011)/Amd.1 (02/2012) 2.4) Clause 8.3.2.3 Modify clause 8.3.2.3 as follows: 8.3.2.3 ESCON output due to ingress or
27、transport signal fail Since the goal of transparent GFP mapping is to transport client signals as transparently as possible, it is not appropriate to initiate link initialization or link recovery procedures on egress due to client signal fail or transport failures. It is recommended that the egress
28、ESCON transmitter continuously output the neutral disparity decoding for 10B_ERR, forcing loss-of-synchronization detection and the associated action at the downstream ESCON receiver. Alternatively, the egress transmitter may generate the not-operational sequence per clause 7.4.2 of ANSI INCITS 296.
29、 NOTE Older equipment was allowed to continuously output the neutral disparity decoding for 10B_ERR, forcing loss-of-synchronization detection and the associated action at the downstream ESCON receiver. If the CSF condition persists, the client adaptation process may transmit nothing, forcing LOS de
30、tection and associated action at the downstream ESCON receiver. ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications and middleware Y.200Y.299 Network aspec
31、ts Y.300Y.399 Interfaces and protocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applications Y.1100Y.1199 Architecture, access, n
32、etwork capabilities and resource management Y.1200Y.1299 Transport Y.1300Y.1399Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1899 IPTV over NGN Y.1900Y.1999 NEXT GENERA
33、TION NETWORKS Frameworks and functional architecture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in NGN Y.2250Y.2299 Numbering, naming and ad
34、dressing Y.2300Y.2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Smart ubiquitous networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 Future networks Y.3000Y.3099 For further details,
35、please refer to the list of ITU-T Recommendations. Printed in Switzerland Geneva, 2012 SERIES OF ITU-T RECOMMENDATIONS Series A Organization of the work of ITU-T Series D General tariff principles Series E Overall network operation, telephone service, service operation and human factors Series F Non
36、-telephone telecommunication services Series G Transmission systems and media, digital 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 Se
37、ries K Protection against interference Series L 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 circuit
38、s Series O Specifications of measuring equipment Series P Terminals and subjective and objective assessment methods Series Q Switching and signalling Series R Telegraph transmission Series S Telegraph services terminal equipment Series T Terminals for telematic 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 and next-generation networks Series Z Languages and general software aspects for telecommunication systems
