ITU-T E 177-1996 B-ISDN Routing - Series E Telephone Network and ISDN Operation Numbering Routing and Mobile Services - International Operation - International Routing Plan《宽带综合业务数.pdf
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1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU E.177 SERIES E: TELEPHONE NETWORK AND ISDN Operation, numbering, routing and mobile services - International operation - International routing plan (1 0/96) B-ISDN routing ITU-T Recommendation E.177 (Previous
2、ly CClTT Recommendation) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T E-SERIES RECOMMENDATIONS TELEPHONE NETWORK AND SDN OPERATION, NUMBERING, ROUTING AND MOBILE SERVICES INTERNATIONAL OPERATION Definitions E.100-E.229 E. 1 OO-
3、E. 103 General provisions concerning Administrations E. 104-E. 1 19 General provisions concerning users E. 120-E. 139 Operation of international telephone services E. 140-E. 159 Tones in national signalling systems Maritime mobile service and public land mobile service E. 180-E. 199 E.200-E.229 OPER
4、ATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN E.230-E.299 THE INTERNATlONAL TELEPHONE SERVICE Charging in the international telephone service E.230-E.249 Procedures for remuneration of Administrations for facilities made available E.250-E.259 Measuring and recording call durations for ac
5、counting purposes Establishment and exchange of international accounts E.260-E.269 E.270-E.299 UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON- E.300-E.329 TELEPHONY APPLICATIONS General E.300-E.319 Phototelegraphy E.320-E.329 ISDN PROVISIONS CONCERNING USERS E.330-E.399 QUALINOF SERVICE,
6、 NETWORK MANAGEMENT AND TRAFFIC ENGINEERING NETWORK MANAGEMENT E.400-E.489 TRAFFIC ENGINEERING E.490-E.799 QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, E.800-E.899 OBJECTIVES AND DEPENDABILITY PLANNING For further details, please refer to ITU-T List of Recommendations. COPYRIGHT Internat
7、ional Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesITU-T RECOMMENDATION E.177 B-ISDN ROUTING Summary This Recommendation provides routing principles in B-ISDN, in particular, guidance on the incorporation of service requirements into the network routing pro
8、cess. Source ITU-T Recommendation E. 177 was prepared by ITU-T Study Group 2 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 8th of October 1996. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services STD.ITU-T R
9、ECMN EmL77-ENGL 1996 m 48b2593 Ob2bL20 3bb B FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The ITU-T is responsible for studyi
10、ng technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Grou
11、ps which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). In some areas of information technology which fall within ITU-Ts purview, the nec
12、essary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. O ITU 1997 All rights reserved. No part of this publica
13、tion may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. 11 Recommendation E.177 (10/96) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information H
14、andling ServicesCONTENTS Page 1 Introduction 2 3 Scope References and related Recommendations . 4 Definitions Abbreviations . B-ISDN routing principles . Network structure . 8 Routing process 8.1 General 8.2 User-network interface . 8.3 Originating local VC switch . 8.4 Transit VC switches (national
15、 and international) . 8.5 OAM nodes 9 9.1 9.2 9.3 9.4 9.5 9.6 9.7 9.8 9.9 9.10 9.1 1 9.12 10 Information analysis . Calling party . Incoming route Called number Broadband bearer capability . ATM traffic descriptor ATM cell rate (encoded as ATM cell rate as SS No . 7 B-ISUP) . End-to-end transit dela
16、y Maximum end-to-end transit delay . Propagation delay counter Transit network selection Network management conditions . Time, event and state conditions Network capability . 11 Signalling capability . 12 History Recommendation E.177 (10196) 1 1 2 2 2 3 9 9 9 9 10 11 11 11 11 11 11 11 11 11 12 12 .
17、111 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesCOPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesRecommendation E.177 B-ISDN ROUTING (Geneva, 1996) 1 Introduction This R
18、ecommendation provides routing principles in B-ISDN, in particular, guidance on the incorporation of service requirements into the network routing process. Contents of this Recommendation will be extended in order to satisfy operational needs which will arise according to the evolution of networkhig
19、nalling capabilities. 2 Scope The scope of this Recommendation is the routing of B-ISDN user information transport network supported by Signalling Capability Set 1 (SCS-1). Service capabilities supported in this Recommendation are as follows: - routing principles for on-demand Virtual Channel Connec
20、tion directed by signalling procedures to provide Broadband Connection Oriented Bearer service are specified. Routing principles for Broadband Connectionless Bearer Service are out of scope of this Recommendation; - Virtual Path Connections to accommodate the Virtual Channel Connection are predefine
21、d, - one and only one connection is established per call in a point-to-point configuration; - intenvorking with N-ISDN circuit mode service is considered; and - no QOS indicationhegotiation is performed between user and network. i.e. semi-permanent connection; Check marks on Table 1 show the service
22、 capabilities supported in this Recommendation. TABLE 1E. 177 Service capabilities supported in this Recommendation Configuration Broadcast Point-to-multipoint JPoint-to-point Number of connections Asymmetric JSymmetric Bandwidth c all connection per call per call Multiple connections per JOne and o
23、nly one Bearer service Indication of QOS JNo indication QOS class ISDN Frame mode Packet mode /Circuit mode Interworking with N- BCLB-D BCOB-B, C JBCOB-A BCOB Broadband Connection Oriented Bearer service BCLB Broadband Connectionless Bearer service I Routing principles for Virtual Path Connection is
24、 out of the scope of this Recommendation. The following separation of concerns between transport function and OAM function should be taken into consideration: Recommendation E.177 (10/96) 1 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Servic
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