1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU x.77 Corrigendum 1 (03/2000) SERIES X: DATA NETWORKS AND OPEN SYSTEM COM M U N I CATI ON S Public data networks - Transmission, signalling and switching Interworking between PSPDNs via B-ISDN Corrigendum 1 IT
2、U-T Recommendation X.77 - Corrigendum 1 (Formerly CCITT Recommendation) ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS II PUBLIC DATA NETWORKS Services and facilities Interfaces Transmission, signalling and switching Network aspects Maintenance Administrative arrangement
3、s Model and notation Service definitions Connection-mode protocol specifications Connectionless-mode protocol specifications PICS proformas Protocol Identification Security Protocols Layer Managed Objects Conformance testing General Satellite data transmission systems IP-based networks MESSAGE HANDL
4、ING SYSTEMS DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS Networking Efficiency Quality of service Naming, Addressing and Registration Abstract Syntax Notation One (ASN. 1) Systems Management framework and architecture Management Communication Service and Protocol Structure of Management Information M
5、anagement functions and ODMA functions OPEN SYSTEMS INTERCONNECTION INTERWORKING BETWEEN NETWORKS OS1 MANAGEMENT SECURTTY OSI APPLICATIONS Commitment, Concurrency and Recovery Transaction processing Remote operations OPEN DISTRIBUTED PROCESSING X. 1 -X. 19 X.20-X.49 X.50-X.89 X.90-X. 149 x. 150-x. 1
6、79 X. 180-X. 199 X.200-X.209 X.210-X.219 X.220-X.229 X.230-X.239 X.240-X.259 X.260-X.269 X.270-X.279 X.280-X.289 X.290-X.299 X.300-X.349 X.350-X.369 x.370-x.399 X.400-X.499 X.500-X.599 X.600-X.629 X.630-X.639 X.640-X.649 X.650-X.679 X.680-X.699 X.700-X.709 X.710-X.719 X.720-X.729 x.730-x.799 X.800-X
7、849 X.850-X.859 X.860-X.879 X.880-X.899 X.900-X.999 For further details, please refer to the list oJITU-T Recommendations. ITU-T Recommendation X.77 Interworking between PSPDNs via B-ISDN CORRIGENDUM 1 Source Corrigendum 1 to ITU-T Recommendation X.77 was prepared by ITU-T Study Group7 (1 997-2000)
8、 and approved under the WTSC Resolution 1 procedure on 3 1 March 2000. FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is
9、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 Conference .(WTSC), which meets every four years, establishes the topics for study
10、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 information technology which fall within ITU-Ts purview, the necessary standards are prepared on a col
11、laborative 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. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or impl
12、ementation 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 proces
13、s. 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, implementors are cautioned that this may not represent the latest information and are therefore strongly
14、urged to consult the TSB patent database. o 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, including photocopying and microfilm, without permission in writing from ITU. ITU-T Recommendation X.77 Interwork
15、ing between PSPDNs via B-ISDN CORRIGENDUM 1 1) Clause 2 Replace the reference to ITU-T 1.363, as follows: ITU-T Recommendation 1.363.5 (1 996) - B-ISDN ATM adaptation layer AAL specification - Type 5 AA. Rationale: ITU-T 1.363 was separated for each AAL protocol in Study Group 13. Among them, 2) Sub
16、clause 11.1 Type 5 AAL is the only one relevant to ITU-T X.77. Replace the first sentence: Type 5 of the AAL functions applies (see Recommendation 1.362 and 1.363). with: Type 5 of the AAL functions applies (see ITU-T 1.363.5). Rationale: See clause 1. 3) Subclause 11.2 Replace the first sentence: S
17、ervice class C and Type 5 of the AAL functions applies (see Recommendations 1.362 and 1.363). Subclause 13.3.1 - Some other X.77-STE may perform either to decide to offer the call or reject the call. with: - Some other X.77-STE may perform additional procedures to decide to offer the call or reject
18、the call. nale: Clarification. Table B.1 Delete the row Q.2931 cause, Code 10. a) Rationale: No existing Recommendation defines this cause. b) Rationale: Alignment with ITU-T 4.2610. cl Rationale: In this table, 4.2931 cause, Code 93 appears twice with different explanations. 6.4.5/Q.293 1 defines C
19、ode 73 as “Unsupported combination of traffic parameters“, and Code 93 as “AAL parameters cannot be supported“. This corrects a typographical error. In the row Q.2931 cause, Code 51, change Code 51 to Code 37. In the row Q.2931 cause, Code 93, change Code 93 to Code 73. Series A Series B Series C Se
20、ries D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Y Series Z SERIES OF ITU-T RECOMMENDATIONS Organization of the work of ITU-T Means of expression: definitions, symb
21、ols, classification General telecommunication statistics General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia system
22、s Integrated services digital network Transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant TMN and network maintenance: international transmission systems, tele
23、phone circuits, telegraphy, facsimile and leased circuits Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission
24、 Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communications Global information infrastructure and Internet protocol aspects Languages and general software aspects for telecommunication systems
