1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.967.1 (06198) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital sections and digital line system - Digital section and digital transmission system
2、s for customer access to ISDN V-interfaces at the service node (SN): VB5.1 reference point specification ITU-T Recommendation G.967.1 (Previously CCIlT Recommendation) STD-ITU-T RECMN G.Sb7.L-ENGL 1778 48b2571 Ob54110 337 = ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTE
3、MS AND NETWORKS - , For further details, please refer to ITU-T List of Recommendations. Digital sections at hierarchical bit rates based on a bit rate of 2048 h,its Digital line transmission systems on cable at non-hierarchical bit rates Digital line systems provided by FDM transmission bearers Digi
4、tal line systems Digital section and digital transmission systems for customer access to ISDN Optical fibre submarine cable systems Optical line systems for local and access networks Access networks NTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS NTERNA TIONA L A NA LOGUE CARRIER SYSTEM ;ENERAL CHAR
5、ACTERISTICS COMMON TO ALL ANALOGUE CARRIER- TRAN SM ISS1 ON SYSTEMS NDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES 3ENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE NITH METALLIC LINES SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION 200R
6、DINATION OF RADIOTELEPHONY AND LINE TELEPHONY TESTING EQUIPMENTS TRANSMISSION MEDIA CHARACTERISTICS General Symmetric cable pairs Land coaxial cable pairs Submarine cables Optical fibre cables Characteristics of optical components and sub-systems DIGITAL TRANSMISSION SYSTEMS TERMINAL EQUI PMENTS DIG
7、ITAL NETWORKS DIGITAL SECTIONS AND DIGITAL LINE SYSTEM General Parameters for optical fibre cable systems G. 1 OO-G. 1 99 G.200-G.299 G. 300-G. 399 G.400-G.449 G .450-G .499 G .600-G. 609 G.610-G.619 G.620-G.629 G.630-G.649 G .650-G ,659 G .660-G . 699 G. 700-G. 799 G.800-G.899 G. 900-G. 999 G. 900-
8、G. 909 G.910-G.919 G. 920-G. 929 G ,930-G ,939 G.940-G.949 G.950-G ,959 G.960-G.969 G.970-G.979 G ,980-G .989 G. 990-G. 999 ITU-T RECOMMENDATION G.967.1 V-INTERFACES AT THE SERVICE NODE (SN): VB5.1 REFERENCE POINT SPECIFICATION Summary This Recommendation specifies the physical, procedural and proto
9、col requirements for interfaces at the VB5.1 reference point between an Access Network (AN) and a Service Node (SN) with flexible (provisioned) Virtual Path Link (VPL) allocation and flexible (provisioned) Virtual Channel Link (VCL) allocation (controlled by the Q3 interfaces) at the VB5.1 reference
10、 point. , Source ITU-T Recommendation G.967.1 was prepared by ITU-T Study Group 13 (1997-2000) and was approved under the WTSC Resolution No. 1 procedure on the Ist of June 1998. Keywords VB5 reference points, Access Network, Service Node. FOREWORD ITU (International Telecommunication Union) is the
11、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 studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardi
12、zing 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 Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the
13、Members of the ITU-T is covered by the procedure laid down 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 IEC. NOTE In this Recommendation, the expression “Administration“
14、is used for conciseness to indicate both a telecommunication 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 Rig
15、ht. The 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 process. As of the date of approval of this Recommendation, the ITU had not received notice of
16、 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 urged to consult the TSB patent database. O ITU 1998 All rights reserved. No part of
17、 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 the ITU. Recommendation G.967.1 (06/98) 11 1 2 3 3.1 3.2 4 4.1 4.2 4.3 4.4 5 5.1 5.2 5.3 5.4 5.5 6 6.1 6.2 STD-ITU-T RECMN G
18、*7b7-L-ENGL 1998 LiAb2571 Ob54113 04b D CONTENTS Scope References Definitions. symbols and abbreviations . Definitions Abbreviations . Field of application . Applications of the VB5.1 interface . 4.1.1 Transport network . Integration of narrow-band customer access types . Support of other non-B-ISDN
19、 access types Support of various service node types Introduction to the VB5.1 reference point concept General VB5.1 design principles General reference model for the VB5.1 reference point . User port function characteristics General characteristics of individual functional groups . 5.3.1 5.3.2 ATM c
20、onnection function characteristics . 5.3.3 Service port function characteristics . Functional modelling Modelling of user port function 5.4.1 5.4.2 Modelling of service port function 5.4.3 Modelling of ATM connection function . AN view and SN view of physical and logical ports 5.5.1 View from access
21、 network 5.5.2 View from service node Procedural interface requirements Introduction Physical layer requirements 6.2.1 General 6.2.2 Basic characteristics of the VB5.1 interface . 6.2.3 VB5.1 interface options . 6.2.4 Interface requirements . Page 1 2 4 4 4 8 8 10 11 12 13 15 15 16 18 18 19 19 19 19
22、 20 20 21 22 23 23 23 24 24 24 26 26 . Recommendation G.967.1 (06/98) 111 6.3 6.4 6.5 6.6 7 7.1 7.2 7.3 7.4 7.5 7.6 8 8.1 8.2 I ATM layer requirements 6.3.1 Cell header format and encoding and pre-assigned cell headers for use by the ATM layer . 6.3.2 Cell Loss Priority (CLP) . 6.3.3 VPC carrying RT
23、MC protocol VCC . 6.3.4 OAM Higher layer interface requirements . 6.4.1 User plane 6.4.2 Control plane . 6.4.3 Management plane 6.4.4 Establishment of VP and VC links/connections . 6.4.5 ATM Adaptation Layer for the RTMC function . Meta-signalling . Interface management application Broadband access
24、network connection types . Introduction to connections/connection elements Multipoint requirements Broadband access network connection element identifiers 7.3.1 Connection element identifiers in user-to-network signalling messages 7.3.2 Connection element identifiers in RTMC messages . Broadband acc
25、ess network connection type matrix . B-ISDN type broadband access network connections Type A broadband access network connections Type B broadband access network connections 7.5.1 7.5.2 Non-B-ISDN type broadband access network connections (type D) . 7.6.1 Type D-VP broadband access network connectio
26、n . 7.6.2 Type D-VC broadband access network connection 7.6.3 Application example of non-B-ISDN type broadband access network connections for the support of narrow-band access types . Non-B-ISDN access . General considerations . ATM-based accesses 8.2.1 General approach . 8.2.2 User plane 8.2.3 Cont
27、rol plane . 8.2.4 Management plane Page 27 27 27 27 27 28 28 28 28 28 29 30 30 30 30 31 31 31 31 32 34 34 38 38 39 39 39 40 40 40 40 41 41 42 iv Recommendation G.967.1 (06/98) 8.3 Non-ATM-based accesses 8.3.1 General approach . 8.3.2 Analogue and 64 kbit/s based narrow-band accesses as supported by
28、V5 interfaces . 8.3.3 Other non-ATM-based non-B-ISDN accesses 9 Transfer and layer management functions 9.1 General functional architecture 9.2 Functional architecture of transfer and layer management functions . 9.3 Transfer fiinctions required for individual broadband AN connection types . 9.4 Fun
29、ctions associated with the physical user port . 9.5 Functions associated with the logical user port 9.5.1 ATM virtual path sublayer functions at the LUP 9.5.2 ATM virtual channel sublayer functions on top of the LUP . Functions associated with the adaptation of non-3-ISDN access types . 9.6.1 Functi
30、ons for the support of narrow-band accesses as supported by V5 interfaces . 9.6.2 Functions for the support of other non-B-ISDN access types . 9.6 9.7 Connection functions 9.8 Functions associated with the physical service port . 9.9 Functions associated with the logical service port . 9.9.1 ATM vir
31、tual path sublayer functions at the LSP . 9.9.2 ATM virtual channel sublayer functions on top of the LSP . 1 O Provisioning principles and requirements 10.1 General . 10.2 Principles 11 Requirements for real-time coordination between AN and SN 1 1.1 Principles and requirements for real-time manageme
32、nt coordination (RTMC) . 1 1.1.1 General principles for RTMC . 1 1.1.2 RTMC requirements related to administrative actions . 1 1.1.3 RTMC requirements related to the occurrence of fault conditions . 1 1.1.4 Verification of LSP ID 1 1.1.5 Interface reset procedure . 1 1.1.6 VPCI consistency check 11.
33、1.7 Activatioddeactivation of B-ISDN accesses under control of the SN . 1 1.1.8 1 1.1.9 Procedural RTMC requirements . Summary of RTMC functions . Page 42 42 44 45 45 45 47 48 49 50 50 51 52 52 52 52 53 54 54 54 56 56 56 57 58 58 58 61 62 62 62 62 62 63 Recommendation G.967.1, (0698) V 12 12.1 12.2
34、13 13.1 13.2 13.3 14 14.1 14.2 Performance design objectives . Performance design objectives for transfer functions Performance design objectives for RTMC functions . VB5.1 system architecture. structure and procedures Introduction VB5.1 system architecture 13.2.1 System diagrams . 13.2.2 Block diag
35、rams RTMC procedures 13.3.1 13.3.2 13.3.3 VPCI consistency check procedure . 13.3.4 RTMC housekeeping procedures Message format and codes Message and information elements encoding principles 14.1 . 1 Encoding principles for messages . 14.1.2 14.1.3 Order of transmission 14.1.4 Coding of extension in
36、dicator bit 14.1.5 Coding of integers . 14.1.6 Coding of spare bits . 14.1.7 Compatibility instruction indicators RTMC protocol messages and information elements 14.2.1 RTMC protocol messages for VB5 . 14.2.2 General principles for the RTMC procedures . Coordination of resource status change procedu
37、res Encoding principles for information elements RTMC function specific information elements . Annex A . SDL process diagrams . Annex B . UPC and NPC function location . B . 1 Introduction B.2 Location of the UPC function . B.2.1 Location of the UPC(VP) function B.2.2 Location of the UPC(VC) functio
38、n . ; . B.3 Location of the NPC function . B.3.1 Location of the NPC(VP) function B.3.2 Location of the NPC(VC) function . Page 64 64 64 64 64 65 65 81 93 93 97 111 114 120 120 120 124 125 125 126 126 126 127 128 135 141 141 141 142 142 142 142 143 143 vi Recommendation G.967.1 (06198) Annex C . Pri
39、mitive interface between VB5.1 protocol FSMs and environment C . 1 Introduction C.2 General definition of the primitive interface C.3 Primitive interface for the RTMC function C.3.1 General description for primitives . C.3.2 Description of primitive attributes C.3.3 C.3.4 C.3.5 Mapping between primi
40、tives and messages Creatioddeletion of VPC related entities across the primitive interface Exceptional procedures at the primitive interface . Appendix I . Value-added features of VB5 interfaces applicable to other VBx interfaces Appendix II . Application of the protection facility of SDH on the VB5
41、.1 interface . Appendix III . Examples of physical interface options for the VB5.1 interface Appendix IV . Non-ATM-based non-B-ISDN accesses . IV . 1 General . IV.2 Examples of non-ATM-based non-B-ISDN accesses IV.2.1 LAN Accesses . IV.2.2 Accesses for TV distribution services . IV.2.3 Access for as
42、ymmetric services/multimedia (e.g. video on demand) . Appendix V . RTMC messages and information elements in ASN . 1 notation Appendix VI . MEE primitives for the RTMC function in ASN . 1 notation Appendix VI1 . Bibliography Page 143 143 143 145 145 148 150 152 156 165 167 169 170 170 170 170 170 17
43、0 171 177 181 Recommendation G.967.1 (06/98) vii Introduction The VB5 reference point concept, based on Recommendations G.902 3 and 1.414 18, was split into two variants. The first, based on the ATM cross-connect with provisioned connectivity, called the VB5.1 reference point, is described in this R
44、ecommendation. The other, which further enables on-demand connectivity within the AN, is called the VB5.2 reference point which will be specified in a fture ITU-T Recommendation. Relationship between the VB5.1 and VB5.2 reference point concepts The VB5.2 reference point extends the capabilities at t
45、he VB5.1 reference point to include on-demand connectivity in the AN under the control of SN. In addition to the major difference given above, the major correspondence between the VB5.1 and VB5.2 reference point can be described as: - both VB5 reference points support B-ISDN as well as narrow-band a
46、nd other non-B-ISDN customer access types; both VB5 reference points support ATM multiplexingcross-connection in the AN at the VP andor VC level. It is anticipated that the Real-Time Management Coordination (RTMC) protocol for the VB5.1 reference point will be a subset of the RTMC protocol for the V
47、B5.2 reference point. - Recommendation 6.967.1 (06/98) . VI11 STD-ITU-T RECMN G-Sb7-1-ENGL 1778 D qb257L Ob5LiLL9 5b4 m Recommendation G.967.1 V-INTERFACES AT THE SERVICE NODE (SN): VB5.1 REFERENCE POINT SPECIFICATION (Geneva, 1998) 1 Scope This Recommendation specifies the physical, procedural and
48、protocol requirements for interfaces at the VB5.1 reference point between an Access Network (AN) and a Service Node (SN) with flexible (provisioned) Virtual Path Link (VPL) allocation and flexible (provisioned) Virtual Channel Link (VCL) allocation (controlled by the Q3 interfaces) at the VB5.1 refe
49、rence point. The following B-ISDN customer access types with the general User-Network Interface (UNI) characteristics defined in Recommendation 1.432.1 191 are supported: a) B-ISDN accesses with a UNI at 155 520 kbits and 622 080 kbits according to Recommendation 1.432.2 20, Le.: 1) SDH-based; 2) cell-based. b) B-ISDN accesses with a PDH-based UNI at 1544 kbits and 2048 kbits according to Recommendation 1.432.3 21. c) B-ISDN accesses with a UNI at 51 840 kbit/s according to Recommendation 1.432.4 22 and at 25 600 kbits according to Recommendation
