ITU-T Y 1369 1 AMD 2-2018 Precision time protocol telecom profile for phase time synchronization with full timing support from the network Amendment 2 (Study Group 15).pdf
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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.8275.1/Y.1369.1 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Amendment 2 (03/2018) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Packet over Transport aspects Synchronization, quality and avail
2、ability targets SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS, NEXT-GENERATION NETWORKS, INTERNET OF THINGS AND SMART CITIES Internet protocol aspects Transport Precision time protocol telecom profile for phase/time synchronization with full timing support from the network A
3、mendment 2 Recommendation ITU-T G.8275.1/Y.1369.1 (2016) Amendment 2 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 ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.2
4、00G.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 COORDINATION OF RADIOTELEPHONY AND LINE T
5、ELEPHONY 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.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRA
6、NSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 PACKET OVER TRANSPORT ASPECTS G.8000G.8999 Ethernet over Transport aspects G.8000G.8099 MPLS over Transport aspects G.8100G.8199 Synchronization, quality and availability targets G.8200G.8299 Service Manage
7、ment G.8600G.8699 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.8275.1/Y.1369.1 (2016)/Amd.2 (03/2018) i Recommendation ITU-T G.8275.1/Y.1369.1 Precision time protocol telecom profile for phase/time synchronization with full timing
8、support from the network Amendment 2 Summary Recommendation ITU-T G.8275.1/Y.1369.1 contains the ITU-T precision time protocol (PTP) profile for phase and time distribution with full timing support from the network. It provides the necessary details to utilize IEEE 1588 in a manner consistent with t
9、he architecture described in Recommendation ITU-T G.8275/Y.1369. Amendment 2 provides the following updates: - Changes Annex C to reference Annex B of ITU-T G.8275 - Corrects some settings in Tables V.2 and V.3 - Clarifies the requirements on the T-TSC when it is embedded in the end application - Ad
10、ds an example to Appendix XII. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.8275.1/Y.1369.1 2014-07-22 15 11.1002/1000/12197 1.1 ITU-T G.8275.1/Y.1369.1 (2014) Cor. 1 2015-01-13 15 11.1002/1000/12397 2.0 ITU-T G.8275.1/Y.1369.1 2016-06-22 15 11.1002/1000/12815 2.1 ITU-T
11、 G.8275.1/Y.1369.1 (2016) Amd. 1 2017-08-29 15 11.1002/1000/13329 2.2 ITU-T G.8275.1/Y.1369.1 (2016) Amd. 2 2018-03-16 15 11.1002/1000/13553 Keywords Full timing support, IEEE 1588, phase and time synchronization, PTP, telecom profile. * To access the Recommendation, type the URL http:/handle.itu.in
12、t/ 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.8275.1/Y.1369.1 (2016)/Amd.2 (03/2018) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in
13、 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 st
14、andardizing 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
15、 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 basis with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to
16、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 ac
17、hieved 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. INTELLECTU
18、AL 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 no position concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether
19、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, protected by patents, which may be required to implement this Recommendation. However, implementers are cautio
20、ned 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 2018 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of IT
21、U. Rec. ITU-T G.8275.1/Y.1369.1 (2016)/Amd.2 (03/2018) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Recommendation . 2 4 Abbreviations and acronyms 2 5 Conventions 3 6 Use of PTP for phase/time distribution 3 6.1 High
22、-level design requirements 4 6.2 PTP modes and options 4 6.3 Protection aspects and Alternate BMCA 8 6.4 Phase/time traceability information 14 7 ITU-T PTP profile for phase/time distribution with full timing support from the network . 16 8 Security aspects 17 Annex A ITU-T PTP profile for phase/tim
23、e distribution with full timing support from the network . 18 A.1 Profile identification . 18 A.2 PTP attribute values 18 A.3 PTP options 23 A.4 Best master clock algorithm options 24 A.5 Path delay measurement option (delay request/delay response) 24 A.6 Clock identity format 24 A.7 Configuration m
24、anagement options . 24 A.8 Security aspects 24 A.9 Other optional features of IEEE 1588 24 A.10 PTP common header flags 24 Annex B Options to establish the PTP topology with the Alternate BMCA 26 Annex C Inclusion of an external phase/time input interface in a T-BC 27 Annex D Path trace (optional) 2
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