1、 INTERNATIONAL TELECOMMUNICATION UNION ITU-T M.1380TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (02/2000) SERIES M: TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS International data transmission systems Bringing-into-
2、service of international leased circuits that are supported by international data transmission systems ITU-T Recommendation M.1380 (Formerly CCITT Recommendation) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T M-SERIES RECOMMENDA
3、TIONS TMN AND NETWORK MAINTENANCE: INTERNATIONAL TRANSMISSION SYSTEMS, TELEPHONE CIRCUITS, TELEGRAPHY, FACSIMILE AND LEASED CIRCUITS Introduction and general principles of maintenance and maintenance organization M.10M.299 International transmission systems M.300M.559 International telephone circuit
4、s M.560M.759 Common channel signalling systems M.760M.799 International telegraph systems and phototelegraph transmission M.800M.899 International leased group and supergroup links M.900M.999 International leased circuits M.1000M.1099 Mobile telecommunication systems and services M.1100M.1199 Intern
5、ational public telephone network M.1200M.1299 International data transmission systems M.1300M.1399 Designations and information exchange M.1400M.1999 International transport network M.2000M.2999 Telecommunications management network M.3000M.3599 Integrated services digital networks M.3600M.3999 Comm
6、on channel signalling systems M.4000M.4999 For further details, please refer to the list of ITU-T Recommendations. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T M.1380 (02/2000) i ITU-T Recommendation M.1380 Bringing-into-servic
7、e of international leased circuits that are supported by international data transmission systems Summary This ITU-T Recommendation is only applicable to international leased circuits that are supported by a data transmission system. The requirements described in this ITU-T Recommendation should ensu
8、re that an international leased circuit meets performance limits and is fully tested prior to introduction into service. The Bringing-Into-Service tests described in this ITU-T Recommendation should ideally include periods of normal industrial activity to be representative of typical network conditi
9、ons. This ITU-T Recommendation has been developed to be consistent with ITU-T Recommendation M.1370 that describes the Bringing-Into-Service of international data transmission systems. ITU-T Recommendation M.1385 covers maintenance issues for international leased circuits that are supported by a dat
10、a transmission system maintained in accordance with ITU-T Recommendation M.1375. This ITU-T Recommendation addresses the Bringing-Into-Service requirements of leased circuits with a PDH digital presentation at Customers premises. Another ITU-T Recommendation is being developed for Bringing-Into-Serv
11、ice and Maintenance procedures for SDH leased circuits. For leased circuits with an analogue presentation, the Bringing-Into-Service procedures given in ITU-T Recommendation M.1050 apply, with performance achievement in accordance with ITU-T Recommendations M.1020, M.1025 or M.1040 as appropriate. S
12、ource ITU-T Recommendation M.1380 was revised by ITU-T Study Group 4 (1997-2000) and approved under the WTSC Resolution 1 procedure on 4 February 2000. Keywords Bringing-Into-Service, exchange of Information, in-service monitoring, international data transmission system, international leased circuit
13、, testing of performance objectives. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Servicesii ITU-T M.1380 (02/2000) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommuni
14、cations. 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 Telecommunica
15、tion Standardization Conference (WTSC), 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 WTSC Resolution 1. In some areas of
16、 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 operatin
17、g agency. 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 Prop
18、erty 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, protected by patents, which may be required to implement this Recommendation. However, im
19、plementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. Ge3 ITU 2001 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, includin
20、g photocopying and microfilm, without permission in writing from the ITU. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T M.1380 (02/2000) iii CONTENTS Page 1 Scope. 1 2 References. 1 3 Terms and definitions . 3 4 Abbreviations 4
21、5 Performance limits and objectives 4 6 Preliminary exchange of information . 4 7 Bringing-Into-Service procedures. 5 7.1 National circuit portions . 5 7.2 International circuit portions. 5 7.2.1 Bringing-Into-Service using an alternative international link . 6 7.3 End-to-end test 6 7.3.1 Alternativ
22、e end-to-end test 6 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesCOPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T M.1380 (02/2000) 1 ITU-T Recommendation M.1380 Bri
23、nging-into-service of international leased circuits that are supported by international data transmission systems 1 Scope This ITU-T Recommendation describes the Bringing-Into-Service (BIS) procedures1for an international leased circuit that is supported by a data transmission system. The circuit wi
24、ll have a digital presentation, normally in the PDH domain, at the Customers premises, but in some cases may be terminated in the SDH domain. This case of mixed PDH/SDH leased circuit needs further study. The provisions of this ITU-T Recommendation should be considered in conjunction with those of I
25、TU-T Recommendation M.1370 19 for international data transmission systems. This ITU-T Recommendation does not cover the BIS requirements of leased circuits with an analogue presentation at the Customers premises. Such leased circuits are described in ITU-T Recommendation M.1050 16. 2 References The
26、following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; all users of t
27、his Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. 1 ITU-T Recommendation G.701 (1993), Vocabulary of digi
28、tal transmission and multiplexing, and Pulse Code Modulation (PCM) terms. 2 ITU-T Recommendation G.703 (1998), Physical/electrical characteristics of hierarchical digital interfaces. 3 CCITT Recommendation G.802 (1988), Interworking between networks based on different digital hierarchies and speech
29、encoding laws. 4 ITU-T Recommendation G.823 (2000), The control of jitter and wander within digital networks which are based on the 2048 kbit/s hierarchy. 5 ITU-T Recommendation G.824 (2000), The control of jitter and wander within digital networks which are based on the 1544 kbit/s hierarchy. 6 ITU
30、-T Recommendation G.825 (2000), The control of jitter and wander within digital networks which are based on the synchronous digital hierarchy (SDH). 7 ITU-T Recommendation M.60 (1993), Maintenance terminology and definitions. 8 CCITT Recommendation M.80 (1988), Control stations. 9 CCITT Recommendati
31、on M.90 (1988), Sub-control stations. 10 CCITT Recommendation M.1012 (1988), Circuit control stations for leased and special circuits. _ 1The BIS procedures include the setting up of the leased circuit, the exchange of information, the setting of performance limits and the testing against those perf
32、ormance limits. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services2 ITU-T M.1380 (02/2000) 11 CCITT Recommendation M.1013 (1988), Sub-control station for leased and special circuits. 12 ITU-T Recommendation M.1020 (1993), Characteristics
33、of special quality international leased circuits with special bandwidth conditioning. 13 ITU-T Recommendation M.1025 (1993), Characteristics of special quality international leased circuits with basic bandwidth conditioning. 14 CCITT Recommendation M.1040 (1988), Characteristics of ordinary quality
34、international leased circuits. 15 ITU-T Recommendation M.1045 (1996), Preliminary exchange of information for the provision of international leased circuits and international data transmission systems. 16 ITU-T Recommendation M.1050 (1993), Lining up an international point-to-point leased circuit. 1
35、7 ITU-T Recommendation M.1300 (1997), Maintenance of international data transmission systems operating in the range 2.4 kbit/s to 140 Mbit/s. 18 ITU-T Recommendation M.1340 (1996), Performance objectives, allocations and limits for international data transmission links and systems. 19 ITU-T Recommen
36、dation M.1370 (1998), Bringing-into-service of international data transmission systems. 20 ITU-T Recommendation M.1375 (1998), Maintenance of international data transmission systems. 21 ITU-T Recommendation M.1385 (2000), Maintenance of international leased circuits that are supported by internation
37、al data transmission systems. 22 ITU-T Recommendation M.1400 (1997), Designations for international networks. 23 CCITT Recommendation M.1510 (1992), Exchange of contact point information for the maintenance of international services and the international network. 24 ITU-T Recommendation M.1530 (1999
38、), Network maintenance information. 25 ITU-T Recommendation M.1535 (1996), Principles for maintenance information to be exchanged at customer contact point (MICC). 26 ITU-T Recommendation M.1537 (1997), Definition of maintenance information to be exchanged at customer contact point (MICC). 27 ITU-T
39、Recommendation M.1539 (1999), Management of the grade of network maintenance services at the maintenance service customer contact point (MSCC). 28 ITU-T Recommendation M.1540 (1994), Exchange of information for planned outages of transmission systems. 29 CCITT Recommendation M.1560 (1992), Escalatio
40、n procedure for international leased circuits. 30 ITU-T Recommendation M.3208.1 (1997), TMN management services for dedicated and reconfigurable circuits network: leased circuit services. 31 ITU-T Recommendation V.10 (1993), Electrical characteristics for unbalanced double-current interchange circui
41、ts operating at data signalling rates nominally up to 100 kbit/s (also numbered as X.26). COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T M.1380 (02/2000) 3 32 ITU-T Recommendation V.11 (1996), Electrical characteristics for balan
42、ced double-current interchange circuits operating at data signalling rates up to 10 Mbit/s (also published as X.27). 33 ITU-T Recommendation V.12 (1995), Electrical characteristics for balanced double-current interchange circuits for interfaces with data signalling rates up to 52 Mbit/s. 34 ITU-T Re
43、commendation V.24 (2000), List of definitions for interchange circuits between data terminal equipment (DTE) and data circuit-terminating equipment (DCE). 35 ITU-T Recommendation V.28 (1993), Electrical characteristics for unbalanced double-current interchange circuits. 36 ITU-T Recommendation V.38
44、(1996), A 48/56/64 kbit/s data circuit-terminating equipment standardized for use on digital point-to-point leased circuits. 37 ITU-T Recommendation V.110 (2000), Support by an ISDN of data terminal equipments with V-series type interfaces. 38 ITU-T Recommendation V.120 (1996), Support by an ISDN of
45、 data terminal equipment with V-series type interfaces with provision for statistical multiplexing. 39 ITU-T Recommendation V.300 (1999), A 128 (144) kbit/s data circuit-terminating equipment standardized for use on digital point-to-point leased circuits. 40 CCITT Recommendation X.21 (1992), Interfa
46、ce between Data Terminal Equipment and Data Circuit-terminating Equipment for synchronous operation on public data networks. 41 CCITT Recommendation X.24 (1988), List of definitions for interchange circuits between Data Terminal Equipment (DTE) and Data Circuit-terminating Equipment (DCE) on public
47、data networks. 3 Terms and definitions ITU-T Recommendation M.1300 17 provides general descriptions of international data transmission systems relevant to this ITU-T Recommendation. Terminology and definitions relating to this ITU-T Recommendation are provided in ITU-T Recommendations G.701 1 and M.
48、60 7. For the purposes of this ITU-T Recommendation, the following definitions of an international digital leased circuit and Service Level Agreement (SLA)/Contract apply: 3.1 An international digital leased circuit: Is the digital path between two Network Terminating Equipments (NTEs). The digital
49、leased circuit may be bidirectional or unidirectional and its end points are at the boundaries between the Network Operator/Service Provider and the Customer. The NTEs may be owned by the Network Operator/Service Provider or owned by the Customer. 3.2 An SLA/Contract: Is a set of appropriate procedures and targets formally or informally agreed between Network Operators/Service Providers or between Network Operators/Service Providers and Customers, in order to achiev
