1、STD*ITU-T RECMN 1.313-ENGL 1797 I 48b2591 0645118 bL7 I INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU SERIES I: INTEGRATED SERVICES DIGITAL NETWORK Overall network aspects and functions - Network functional principles 1.31 3 (09/97) B-ISDN network requir
2、ements ITU-T Recommendation 1.31 3 (Previously CCITT Recommendation) STD-ITU-T RECMN I9313-ENGL 1777 M 48b259L Ob45LL9 553 ITU-T I-SERIES RECOMMENDATIONS INTEGRATED SERVICES DIGITAL NETWORK GENERAL STRUCTURE Terminology Description of ISDNs General modelling methods Telecommunication network and ser
3、vice attributes General description of asynchronous transfer mode SERVICE CAPABILITIES Scope General aspects of services in ISDN Common aspects of services in the ISDN Bearer services supported by an ISDN Teleservices supported by an ISDN Supplementary services in ISDN I. 100-1.199 I. 1 10-1.1 19 I.
4、 120-1.129 I. 130-1.139 I. 140-1.149 1.150-1.199 1.200-1.299 1.200-1.209 1.2 10-1.2 19 1.220-1.229 1.230-1.239 1.240-1.249 1.250-1.299 OVERALL NETWORK ASPECTS AND FUP ZTIOP 5 1.300-1.399 Reference models Numbering, addressing and routing Connection types Performance objectives Protocol layer require
5、ments General network requirements and functions ISDN USER-NETWORK INTERFACES Application of I-series Recommendations to ISDN user-network interfaces Layer 1 Recommendations Layer 2 Recommendations Layer 3 Recommendations Multiplexing, rate adaption and support of existing interfaces Aspects of ISDN
6、 affecting terminal requirements INTERNETWORK INTERFACES MAINTENANCE PRINCIPLES B-ISDN EQUIPMENT ASPECTS ATM equipment Management of ATM equipment 1.320-1.329 1.330-1.339 1.340-1.349 1.350-1.359 1.360-1.369 1.370-1.399 1.400-1.499 I .420-1.429 1,430-1.439 1.440-1.449 1.4504.459 1.460-1.469 1.470-1.4
7、99 1.500-1.599 1.600-1.699 1.700-1.799 1.730-1.749 1.750-1.799 For further details, please refir to ITU-T List of Recommendations. STD-ITU-T RECMN 1-313-ENGL 1777 D 48b2571 Ob1i5120 275 ITU-T RECOMMENDATION 1.313 B-ISDN NETWORK REQUIREMENTS Summary This Recommendation presents the B-ISDN network arc
8、hitecture needed to support broadband services and service features. The B-ISDN communication configurations and the B-ISDN addressing necessary to support the broadband services are also included in this Recommendation. Source ITU-T Recommendation 1.3 13 was prepared by ITU-T Study Group 13 (1 997-
9、2000) and was approved under the WTSC Resolution No. 1 procedure on the 19th of September 1997. Recommendation 1.313 (09/97) i STD*ITU-T RECMN I.313-ENGL 1777 48b257L Ob1i512L LO1 W FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecomm
10、uni- cations. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. The 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
11、Telecommunication Standardization Conference (WTSC), which meets every four years, establishes the topics for study by the ITU-T Study Groups 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 do
12、wn in WTSC Resolution No. 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and EC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunicat
13、ion administration and a recognized operating agency. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, va
14、lidity or applicability of claimed Intellectual Property Rights, whether asserted by IT members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be
15、 required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1998 Ali rights reserved. No part of this publication may be reproduced or utilized in any for
16、m or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. ii Recommendation 1.313 (09197) CONTENTS 1 Scope 2 Normative references . 3 Terms and definitions . 3.1 Definitions 3.2 Abbreviations 4 B-ISDN communication configurations .
17、 4.1 Point-to-point communication configuration Unidirectional point-to-multipoint communication configuration 4.3 Multipoint-to-point communication configuration . 4.4 Multipoint-to-multipoint communication configurations . Bidirectional point-to-multipoint communication configuration 6 B-ISDN numb
18、ering and addressing . . 4.2 4.5 5 Network control requirements 6.1 Public B-ISDN networks 6.2 mivate networks . 6.3 Interworking requirements between the public and private B-ISDN . 7 B-ISDN management functions . 7.1 Configuration management . 7.3 Performance management . 7.4 Accounting management
19、 7.5 Security management Annex A - B-ISDN service requirements template A.l B-ISDN service . A.2 Service description . A.3 Communication configuration(s) A.4 Connection type(s) B-ISDN network capability requirements Specific B-ISDN signalling requirements Appendix I - Examples of communication confi
20、gurations . 7.2 Fault management . AS A.6 A.7 Interworking . I . 1 1.2 1.3 Example of multipoint-to-point communication configurations . Example of multipoint-to-multipoint communication configurations Example of bidirectional point-to-multipoint communication configuration . Appendix II - B-ISDN se
21、rvice requirements template for database backup/alignment 11.1 B-ISDN service name . II.2 Service description 11.3 Communication configurations . 11.5 B-ISDN network capability requirements . _. . 11.6 Specific B-ISDN signalling requirements 11.7 Interworking 11.4 Connection type(s) . Recommendation
22、 1.313 (09/97) Page 1 1 1 1 1 2 2 2 4 5 6 6 7 7 8 9 10 10 11 12 12 12 13 13 13 14 14 14 14 14 14 14 16 18 20 20 20 22 22 22 23 24 . 111 STD*ITU-T RECMN 1.313-ENGL 1997 = 48b2591 Ob45123 T84 W Appendix III . B-ISDN service requirements template for video on demand B-ISDN service name . 111.2 Service
23、description 111.3 Communication configuration(s) 111.4 Connection type(s) . 111.5 B-ISDN network capability requirements . LII.6 Specific B-ISDN signalling requirements III.7 Interworking III . 1 Appendix IV . B-ISDN service requirements template for CDH services . IV.l B-ISDN service name . IV.2 Se
24、rvice description IV.3 Communication configuration(s) IV.4 Connection type(s) . IV.5 B-ISDN network capabilities IV.6 Specific B-ISDN signalling requirements . IV.7 interworking . Appendix V - Use of NSAP address formats for private ATM network addressing V.l NSAP structures . V.2 ATM address format
25、s . V.3 ATM address structures Page 24 24 24 24 24 25 26 27 27 27 27 28 28 28 30 30 30 30 31 32 iv Recommendation 1.313 (09/97) STD-ITU-T RECMN 1-313-ENGL 1777 M LIBb257L Obq512i 910 Recommendation 1.313 B-ISDN NETWORK REQUIREMENTS (Geneva, 1997) 1 Scope This Recommendation specifies the Broadband I
26、SDN Network requirements in support of B-ISDN services and service features. This Recommendation provides an overview of B-ISDN architecture, including communication configurations, network control requirements, numbering and addressing issues for both public and private networks. 2 Normative refere
27、nces The 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
28、users of this 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. - - - - - ITU-T Recornmendation E. 164 (19971
29、 The international public telecommunication numberingplan. ITU-T Recommendation E.191 (1996), B-ISDN numbering and addressing. ITU-T Recommendation 1.31 1 (1996), E-ISDN general network aspects. ITU-T Recommendation 1.610 (1993, B-ISDN operation and maintenance princeles and functions. ITU-T Recomm
30、endation X.213 (19951, Information technology - Open Systems Interconnection - Network service de$nition. 3 Terms and definitions This Recommendation defines the following terms. 3.1 Definitions 3.1.1 callkonnection establishment. look ahead: Describes a procedure used to determine connection and te
31、rmination compatibility prior to any 3.1.2 call. leaf Part of the connection between a branching point and the party which is added to a point-to-multipoint 3.1.3 root: Initiator of the call. 3.1.4 3.1.5 data volume: The traffic generated by a party. service feature: Is a reusable part of one or mor
32、e service capabilities forming all or part of a service. 3.2 Abbreviations This Recommendation uses the following abbreviations. AAL ATM Adaptation Layer AESA ATM End System Address B-ISDN CDH Cooperative Document Handling Broadband Integrated Services Digital Network Recommendation 1.313 (09/97) 1
33、CDV CLR CTD CPCS DCC DNI DSP ICD ID1 IN MID MMD NSAP PDU PM QOS SDH TMN UNI UPC vc VCI VP VPI STD-ITU-T RECMN 1.313-ENGL 1997 48b2571 Ob45125 857 Cell Delay Variation Cell Loss Ratio Cell Transfer Delay Common Part Convergence Sublayer Data Country Code Destination Network Identifier Domain Specific
34、 Pari International Code Designator Initial Domain Identifier Intelligent Network Message Identifier Multimedia Document Network Service Access Point Protocol Data Unit Performance Management Quality of Service Synchronous Digital Hierarchy Telecommunications Management Network User Network Interfac
35、e Usage Parameter Control Virtual Channel Virtual Channel Identifier Virtual Path Virtual Path Identifier 4 B-ISDN communication configurations Communication configuration specifies who talks to whom (users point of view) and does not say how the U-plane information is supported in terms of connecti
36、ons. Given communication configurations may be supported by means of more than one possible connection configuration. This is illustrated in Appendix I. 4.1 Point-to-point communication configuration 4.1.1 A point-to-point connection may provide unidirectional or bidirectional symmetric and asymmetr
37、ic communications between parties “A“ and “B“. See Figure 1. This connection can be established, modified, or released by Party “A“, “B“ requests. Third party (C or D) may also request the action. Type 1 - Point-to-point connection 4.2 Unidirectional point-to-multipoint communication configuration 4
38、2.1 A Type 2 connection provides unidirectional communications from the “root“ party “A“ to “leaf parties “BI and “C“. See Figure 2. This connection may be established, modified, or released in one of the following ways: . - - Type 2 - Point-to-multipoint (Multicast) connection the root party “A“ m
39、ay request the action; or either leaf (“B“ or “C“) may request the action and individually define the full configurations; 2 Recommendation 1.313 (0997) STD-ITU-T RECMN I.3L3-ENGL 1997 m 4862573 ObLI512b 793 = - each leaf (“B“ or “C“) may individually request to be added to (or deleted from) the con
40、figuration independent of the other leaves (e.g. in case of public multicast); an external entity (“D“) may request the action. - Network + Connection -_- Physical Access Figure 1D.313 - Bidirectional point-to-point connection The initiator of the call may be able to specify which called parties mus
41、t be mandatory and which are optional before the execution of the call. NOTE - Type 2 connections may be used to support multicast and/or broadcast services. A multicast connection is a unidirectional multipoint connection from a single endpoint to a specified number of specified distribution endpoi
42、nts. In a multicast connection, the “leaf“ parties are specified before the connection is established, or by subsequent operations. The “root“ party at the connection will always be aware of all the “leaf“ parties of the connection. A broadcast connection is a unidirectional multipoint connection fr
43、om a root (source) to a number of leaves (sink) which are not always known to the root. In order to establish a point-to-multipoint connection, a Replication Function (see 4.2.1.1). “R“ in the network is required Leaf Network A B Leaf Ti 308330-961602 R Replication Function Figure 2/1.313 - Unidirec
44、tional point-to-multipoint Recommendation 1.313 (09/97) 3 STD-ITU-T RECMN 1-313-ENGL 1777 48b257L Obi5L27 b2T E D 4.2.1.1 Replication Function A Replication Function point in the ATM network is a point in a Type 2 connection where U-plane data received from one incoming data flow is replicated on tw
45、o or more outgoing data flows. A replication is possible in the ATM layer, within the AAL or in higher layers. The initial signalling requirements support ATM layer replication point. In this case replication may occur in any node (ATM switch) of the network in order to provide multiple routes. The
46、ATM layer Replication Function is based on the VPI: VCI fields in the ATM cell header. At the replication point each cell arriving is copied onto two or more outgoing ATM cell streams and within each cell stream onto one or more ATM virtual paths or virtual channels. NOTE - ATM cell payload content
47、is not altered by the copying process. C 4.3 Multipoint-to-point communication configuration 4.3.1 A multipoint-to-point connection provides unidirectional communications from the “leaf“ parties “B“ and “C“ to the “root“ party “A“. The bandwidth transmitted by the leaf parties may be different. In s
48、ome cases, multipoint-to-point may be provided using Type 1 connections (see Figure 1.1-2). In certain cases when processing is performed in the merging point, the bandwidth received by the “root“ party may be different from the sum of the transmitters bandwidth. This connection may be established,
49、modified, and released in one of the following ways: - - - Type 3 - Multipoint-to-point connection the root “A“ may request the action; either leaf (“B“ or “C“) may request the action and individually define the full configuration; each leaf (“B“ or “C“) may individually request to be added to (or deleted from) the configuration independent of other leaves; an external entity (“D“) may request the action. - The initiator of the call may be able to specify which called parties must be mandatory and which are optional before the execution of the call. Nore that “M“ denotes a Me
