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.824 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Corrigendum 1 (08/2015) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital networks Synchronization, quality and availability targets The con
2、trol of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy Corrigendum 1 Recommendation ITU-T G.824 (2000) Corrigendum 1 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.
3、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 SATELLITE LINKS AND
4、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 General aspects G.800G.809 Design objectives for digital ne
5、tworks G.810G.819 Synchronization, quality and 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
6、DIGITAL SECTIONS AND DIGITAL LINE SYSTEM G.900G.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
7、G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.824 (2000)/Cor.1 (08/2015) i Recommendation ITU-T G.824 The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy Corrigendum 1 Summary Corrigendum 1 to Recom
8、mendation ITU-T G.824 (2000) corrects Table 1. History Edition Recommendation Approval Study Group Unique ID* 1.0 ITU-T G.824 1984-10-19 11.1002/1000/4511 2.0 ITU-T G.824 1988-11-25 11.1002/1000/1002 3.0 ITU-T G.824 1993-03-12 XVIII 11.1002/1000/1003 4.0 ITU-T G.824 2000-03-10 13 11.1002/1000/4963 4
9、.1 ITU-T G.824 (2000) Cor. 1 2015-08-13 15 11.1002/1000/12560 _ * 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.824 (2000)/
10、Cor.1 (08/2015) 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 resp
11、onsible 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
12、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-Ts purview, the necessary standards are prepared on a collaborat
13、ive 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 ma
14、ndatory 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.
15、 The 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 ta
16、kes 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 not received notice of intellectual prop
17、erty, 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 2015 All rights reserved
18、. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.824 (2000)/Cor.1 (08/2015) 1 Recommendation ITU-T G.824 The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy Corrigendu
19、m 1 1) Clause 5.1, Jitter limits Correct Table 1 as indicated by the tracked changes. Table 1 Maximum permissible jitter at traffic interfaces Digital rate (kbit/s) Measurement filter bandwidth 3 dB frequencies (Hz) Peak-to-peak amplitude (UIpp) 1 544 10 to 40 k 5.0 8 k to 40 k 0.1 6 312 10 to 60 k
20、5.0 3 k to 60 k 0.1 (Note 1) 32 064 10 to 400 k 5.0 8 k to 400 k 0.1 (Note 1) 44 736 10 to 400 k 5.0 30 k to 400 k 0.1 97 728 10 to 1000 k 5.0 240 k to 1000 k 0.1 NOTE 1 This value requires further study. NOTE 2 1544 kbit/s 1 UI = 647 ns 6312 kbit/s 1 UI = 158 ns 32 064 kbit/s 1 UI = 31.1 ns 44 736
21、kbit/s 1 UI = 22.3 ns 97 728 kbit/s 1 UI = 10.2 ns. Printed in Switzerland Geneva, 2015 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 No
22、n-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 S
23、eries K Protection against interference Series L Environment and ICTs, climate change, 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
24、: international sound programme and television transmission circuits 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 Seri
25、es 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
