s 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.798 Amendment 3 TELECOMMUNICATION STANDARDIZATION SECTOR (01/2017) OF ITU SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital terminal equipments – Other terminal equipment Characteristics of optical transport network hierarchy equipment functional blocks Amendment 3 Recommendation ITU-T G.798 (2012) – Amendment 3 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100–G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- G.200–G.299 TRANSMISSION SYSTEMS INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE G.300–G.399 SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS G.400–G.449 ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450–G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600–G.699 DIGITAL TERMINAL EQUIPMENTS G.700–G.799 General G.700–G.709 Coding of voice and audio signals G.710–G.729 Principal characteristics of primary multiplex equipment G.730–G.739 Principal characteristics of second order multiplex equipment G.740–G.749 Principal characteristics of higher order multiplex equipment G.750–G.759 Principal characteristics of transcoder and digital multiplication equipment G.760–G.769 Operations, administration and maintenance features of transmission equipment G.770–G.779 Principal characteristics of multiplexing equipment for the synchronous digital hierarchy G.780–G.789 Other terminal equipment G.790–G.799 DIGITAL NETWORKS G.800–G.899 DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900–G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE – GENERIC AND USER- G.1000–G.1999 RELATED ASPECTS TRANSMISSION MEDIA CHARACTERISTICS G.6000–G.6999 DATA OVER TRANSPORT – GENERIC ASPECTS G.7000–G.7999 PACKET OVER TRANSPORT ASPECTS G.8000–G.8999 ACCESS NETWORKS G.9000–G.9999 For further details, please refer to the list of ITU-T Recommendations. Recommendation ITU-T G.798 Characteristics of optical transport network hierarchy equipment functional blocks Amendment 3 Summary Amendment 3 to Recommendation ITU-T G.798 (2012): – adds Beyond 100 Gbit/s equipment functions and processes – includes the specification of OTUCn and ODUCn functions by generalizes OTUk and ODUk functions to OTU and ODU – adds ODUflex to FlexE client and subgroup adaptation functions – adds FlexO functions and processes – deletes the ODU virtual concatenation functions – deletes the ODUkP to ATM adaptation functions – removes the processes related to the TCM ACT and FTFL overhead fields History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.798 2002-01-06 15 11.1002/1000/5604 1.1 ITU-T G.798 (2002) Amd. 1 2002-06-13 15 11.1002/1000/6057 2.0 ITU-T G.798 2004-06-13 15 11.1002/1000/7329 3.0 ITU-T G.798 2006-12-14 15 11.1002/1000/8983 3.1 ITU-T G.798 (2006) Amd. 1 2008-12-12 15 11.1002/1000/9669 3.2 ITU-T G.798 (2006) Cor.1 2009-01-13 15 11.1002/1000/9647 4.0 ITU-T G.798 2010-10-22 15 11.1002/1000/10877 4.1 ITU-T G.798 (2010) Cor. 1 2011-04-13 15 11.1002/1000/11117 4.2 ITU-T G.798 (2010) Amd. 1 2011-07-22 15 11.1002/1000/11116 4.3 ITU-T G.798 (2010) Cor. 2 2012-02-13 15 11.1002/1000/11488 4.4 ITU-T G.798 (2010) Amd. 2 2012-04-06 15 11.1002/1000/11487 5.0 ITU-T G.798 2012-12-22 15 11.1002/1000/11778 5.1 ITU-T G.798 (2012) Amd. 1 2014-05-14 15 11.1002/1000/12179 5.2 ITU-T G.798 (2012) Amd. 2 2015-01-13 15 11.1002/1000/12367 5.3 ITU-T G.798 (2012) Cor.1 2015-08-13 15 11.1002/1000/12529 5.4 ITU-T G.798 (2012) Amd. 3 2017-01-12 15 11.1002/1000/13081 * To access the Recommendation, type the URL http://handle.itu.int/ in the address field of your web browser, followed by the Recommendation's unique ID. For example, http://handle.itu.int/11.1002/1000/11 830-en. Rec. ITU-T G.798 (2012)/Amd.3 (01/2017) i 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 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 Telecommunication 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 of information technology which fall within ITU-T's 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 operating 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" 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 practice 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 development 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 strongly urged to consult the TSB patent database at http://www.itu.int/ITU-T/ipr/.  ITU 2017 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. ii Rec. ITU-T G.798 (2012)/Amd.3 (01/2017) Table of Contents Page 1) Scope ............................................................................................................................. 1 2) Modifications to clause 1 .............................................................................................. 1 3) Modifications to clause 2 .............................................................................................. 3 4) Modifications to clause 3 .............................................................................................. 3 5) Modifications to clause 4 .............................................................................................. 6 6) Modifications to clause 5 .............................................................................................. 7 7) Modifications to clause 6 .............................................................................................. 8 8) Modifications to clause 8 .............................................................................................. 13 9) Modifications to clause 13 ............................................................................................ 17 10) Modifications to clause 14 ............................................................................................ 45 11) New clause 15 ............................................................................................................... 215 12) New Annex B ............................................................................................................... 229 Rec. ITU-T G.798 (2012)/Amd.3 (01/2017) iii Recommendation ITU-T G.798 Characteristics of optical transport network hierarchy equipment functional blocks Amendement 3 1) Scope This amendment contains text modifications and additions extending the set of atomic functions in ITU-T G.798 to support Beyond 100 Gbit/s OTN, FlexO, FlexE client and subgroup signals. It deletes the ODU virtual concatenation and ODUkP to ATM adaptation functions as well as the processing of the TCM ACT and FTFL overhead fields. 2) Modifications to clause 1 Replace Figure 1-3 with the following: Rec. ITU-T G.798 (2012)/Amd.3 (01/2017) 1 FC-1200_CP EthPP-OS_CP MT_CP SCC_CPETH_FP ETH_TFP ETH_TFP ETH_FPSCC_CP MT_CP EthPP-OS_CP FC-1200_CP ODU2eP/ ODU2P/ ODUkP[-h]/ ODUkP[-h]/ ODUkP[-h]/ ODUkP[-h]/ ODU2P/ ODU2eP/ FC-1200 EthPP-OS MT ETH ETH MT EthPP-OS FC-1200 RSn_CP CBRx_CP CBRx_CP CBRx_CP CBRx_CP CBRx_CP CBRx_CP RSn_CP ODUkP/ ODU0P/ ODUkP-g/ ODUkP/ ODUkP/ ODUkP-g/ ODU0P/ ODUkP/ RSn CBRx CBRx CBRx CBRx CBRx CBRx RSn ODUk_CP ODUk_CP ODUk_CP ODUk_CP ODUkP[-h]/ ODUkP/ ODUkP/ ODUkP[-h]/ ODUj-21 ODU[i]j ODU[i]j ODUj-21 COMMS_CP COMMS_CP ODUkP/ ODUkP/ ODUkP/ ODUkP/ ODUkP/ ODUkP/ PRBS NULL COMMS COMMS NULL PRBS ODUkP_AP ODUkT ODUkTm ODUkP ODUkP_RP ODUkP ODUkP ODUkP non-intrusive non-intrusive monitor monitor ODUkT/ ODUk_TCP ODUkT/ C ODUk ODUk_CP ODUk C M M C ODUkT_AP ODUkT_AP C UkT_T ODUkT ODUk ODUkT UkT_T D D O ODUkT_RP O ODUk_CP OTUk[V]/ OTUk[V]/ ODUk ODUk OTUk[V]_AP OTUk[V] OTUk[V]_RP OTUk[V] OTUk[V]_TCP OTUk[V]_CP OCh/ OCh/ OTUk[V] OTUk[V] OCh_AP OCh_AP COMMS_CP ODUk_CP ODUk_CP COMMS_CP ODUCnP/ ODUCnP/ ODUCnP/ ODUCnP/ ODUCnP/ ODUCnP/ ODUCnP/ ODUCnP/ PRBS NULL COMMS ODUk ODUk COMMS NULL PRBS ODUCnP_AP ODUCnP ODUCnP_RP ODUCnP ODUCn_TCP ODUCnT/ ODUCnT/ MC ODUCn ODUCn MC noOnD-inUtCrunsPive noOnD-inUtCrunsTive UCnT_TC ODUCnT OODDUUCCnnTT__RAPP ODUCnT UCnT_TC OmDoUnCitonrP ODmUonCintoTrm D D O O ODUCn_TCP OTUCn/ OTUCn/ ODUCn ODUCn OTUCn_AP OTUCn OTUCn_RP OTUCn NOTE - OTSi[G/A]/OTUCn functions are for further study OTUCn_TCP OTUCn_CP OTSiA/ OTSiG/ OTSi/ OTSi/ OTSiG/ OTSiA/ OTUCn OTUCn OTUCn OTUCn OTUCn OTUCn OTSiA_AP OTSiG_AP OTSi_AP OTSi_AP OTSiG_AP OTSiA_AP Figure 1-3 – OTN common atomic functions 2 Rec. ITU-T G.798 (2012)/Amd.3 (01/2017) 3) Modifications to clause 2 Update the following references: [ITU-T G.664] Recommendation ITU-T G.664 (20122006), Optical safety procedures and requirements for optical transport systems. [ITU-T G.694.1] Recommendation ITU-T G.694.1 (20122002), Spectral grids for WDM applications: DWDM frequency grid. [ITU-T G.695] Recommendation ITU-T G.695 (20152010), Optical interfaces for coarse wavelength division multiplexing applications. [ITU-T G.709] Recommendation ITU-T G.709/Y.1331 (20162012), Interfaces for the optical transport network. [ITU-T G.780] Recommendation ITU-T G.780/Y.1351 (2010), Terms and definitions for synchronous digital hierarchy (SDHSDN) networks. [ITU-T G.784] Recommendation ITU-T G.784 (20081999), Synchronous digital hierarchy (SDH) management. [ITU-T G.806] Recommendation ITU-T G.806 (20122009), Characteristics of transport equipment – Description methodology and generic functionality. [ITU-T G.808.1] Recommendation ITU-T G.808.1 (20142010), Generic protection switching – Linear trail and subnetwork protection. [ITU-T G.872] Recommendation ITU-T G.872 (20162001), Architecture of optical transport networks. [ITU-T G.873.1] Recommendation ITU-T G.873.1 (20142006), Optical transport network (OTN): Linear protection. [ITU-T G.873.2] Recommendation ITU-T G.873.2 (2015), ODUk shared ring protection. [ITU-T G.874] Recommendation ITU-T G.874 (20132008), Management aspects of optical transport network elements. [ITU-T G.959.1] Recommendation ITU-T G.959.1 (20122009), Optical transport network physical layer interfaces. [ITU-T G.7042] Recommendation ITU-T G.7042/Y.1305 (2006), Link capacity adjustment scheme (LCAS) for virtual concatenated signals. [ITU-T G.8021] Recommendation ITU-T G.8021/Y.1341 (20152010), Characteristics of Ethernet transport network equipment functional blocks. [ITU-T G.8121] Recommendation ITU-T G.8121/Y.1381 (20162013), Characteristics of MPLS-TP equipment functional blocks. [ITU-T I.150] Recommendation ITU-T I.150 (1999), B-ISDN asynchronous transfer mode functional characteristics. [ITU-T I.321] Recommendation ITU-T I.321 (1991), B-ISDN protocol reference model and its application. [ITU-T I.361] Recommendation ITU-T I.361 (1999), B-ISDN ATM layer specification. [ITU-T I.371] Recommendation ITU-T I.371 (2004), Traffic control and congestion control in B-ISDN. Rec. ITU-T G.798 (2012)/Amd.3 (01/2017) 3 [ITU-T I.432.1] Recommendation ITU-T I.432.1 (1999), B-ISDN user-network interface – Physical layer specification: General characteristics. [ITU-T I.610] Recommendation ITU-T I.610 (1999), B-ISDN operation and maintenance principles and functions. [ITU-T I.732] Recommendation ITU-T I.732 (2000), Functional characteristics of ATM equipment. [IEEE 802.3] IEEE Std. 802.3-20152008, IEEE Standard for EthernetInformation technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements – Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications. [IEEE 802.3ba] IEEE Std. 802.3ba-2010, IEEE Standard for Information technology – Telecommunications and information exchange between systems – Local and metropolitan area networks – Specific requirements – Part 3: Carrier Sense Multiple Access with Collision Detection (CSMA/CD) Access Method and Physical Layer Specifications – Amendment 4: Media Access Control Parameters, Physical Layers, and Management Parameters for 40 Gb/s and 100 Gb/s Operation. [ETSI TR 101 290] ETSI TR 101 290 V1.3.1 V1.2.1 (20142001), Digital Video Broadcasting (DVB); Measurement guidelines for DVB systems. [OIF FlexE] Optical Internetworking Forum, OIF-FLEXE-01.0 (2016), Flex Ethernet Implementation Agreement 1.0. <http://www.oiforum.com/wp-content/uploads/OIF-FLEXE-01.0.pdf> 4) Modifications to clause 3 Replace clause 3 with the following text: 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 Terms defined in [ITU-T G.709]: – completely standardized OTUk (OTUk). – connection monitoring end point (CMEP) – functionally standardized OTUk (OTUkV) – ODUk path (ODUkP) – ODUk TCM (ODUkT) – optical channel (OCh) – optical data unit (ODU) – optical payload unit (OPU) – optical transport unit (OTU) – optical transport network (OTN) 4 Rec. ITU-T G.798 (2012)/Amd.3 (01/2017)