ITU-T Q 1521-2000 Requirements on Underlying Networks and Signalling Protocols to Support UPT Series Q Switching and Signalling Intelligent Network《对支持UPT的下层网络和信令协议的需求》.pdf

1、INTERNATIONAL TELECOMMUN CATION UN ION ITU-T TELECOMMUNICATION STAN DARD IZATION SECTOR OF ITU SERIES Q: SWITCHING AND SIGNALLING Intelligent Network Q.1521 (06/2000) Requirements on underlying networks and signalling protocols to support UPT ITU-T Recommendation Q.1521 (Formerly CCITT Recommendatio

2、n) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R 1 SP

3、ECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 43 INTERFACE DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING CLAUSES APPLICABLE TO ITU-T STANDA

4、RD SYSTEMS INTERWORKING WITH SATELLITE MOBILE SYSTEMS _I - NET SIGNALLING REQUGMNTS AND PROTOCOLS FOR IMT-2000 BROADBAND ISDN Q. 1-4.3 Q .4-Q. 5 9 4.60-4.99 Q.lOCrQ.ll9 Q. 120-4.249 Q.25CrQ.309 4.310-4.399 Q.400-Q.499 Q.500-Q.599 4.600-4.699 4.700-4.799 Q.SOCrQ.849 Q.850-Q.999 Q.1000-Q.1099 Q.1 lOCr

5、Q.1199 Q.1200-Q.1699 - Q. 1700-Q. 1799 Q.2000-4.2999 I._ -.-I For further details, please refer to the list of ITU-TRecomrnendations ITU-T Recommendation 4.1521 Requirements on underlying networks and signalling protocols to support UPT Summary This Recommendation specifies some requirements on supp

6、orting networks and signalling protocols, for the support ofUPT Service Set 1, as defined within ITU-T F.851. Source ITU-T Recommendation 4.1521 was prepared by ITU-T Study Group 11 (1997-2000) and approved under the WTSC Resolution 1 procedure on 15 June 2000. Keywords UPT. FOREWORD The Internation

7、al 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 responsible for studying technical, operating and tariff questions and issuing Recommendations

8、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 groups which, in turn, produce Recommendations on these topics. The approval

9、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 collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration“

10、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 implementation of this Recommendation may involve the use of a claimed Intellectual Property Right.

11、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, ITU had not received notice of intellectua

12、l 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 2001 All rights reserved. No part of this public

13、ation 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. 1 CONTENTS Page Scope 1 2 3 3.1 3.2 4 5 6 6.1 6.2 6.3 7 7.1 7.2 7.3 8 8.1 8.2 9 9.1 9.2 References Definition of terms . Terms defi

14、ned in ITU-T F.851 2 . Terms defined in this Recommendation . 3.2.1 General terms 3.2.2 Specific terms Glossary of abbreviations . Description of UPT . General requirements General principles . Key network functionalities . Network transport of identities . Requirements on UPT networks . Scope of in

15、terworking 7.1 . 1 CS- 1 -based 7.1.2 CS-2-based Functional architecture for intenvorking 7.2.1 CS-1-based 7.2.2 CS-2-based Interworking - Requirements . 7.3.1 CS-1-based 7.3.2 Compatibility requirements between CS- I and CS-2 . 7.3.3 Scenario 1 7.3.4 Scenario 2 7.3.5 Scenario 3 7.3.6 Scenario 4 7.3

16、 -7 Future requirements . Requirements on the local exchanges . Originating local exchanges . Terminating local exchanges Requirements on the transit exchanges National exchanges . International switching exchanges 1 2 3 4 8 9 9 10 11 11 12 12 12 15 16 16 17 17 18 20 20 20 21 21 21 . 10 10.1 10.2 11

17、 11.1 12 12.1 12.2 13 13.1 13.2 13.3 Feature interactions UPT feature set . 1 O . 1.1 Essential UPT features 1 O . 1.2 Optional UPT features . 10.1.3 UPT Supplementary Services Feature interactions between UPT and PSTN/ISDN features Intenvorking . Requirements on IN . Transport of parameters require

18、d for UPT services . Requirements on network signalling UPT calls versus non-UPT calls . Transport of parameters required for UPT services . 12.2.1 Transport of UPT service indicators . Requirements on access signalling . Transport of parameters required for UPT services . Requirements on DSS 1 . Re

19、quirements for Information Flows . Page 21 21 21 22 24 27 31 31 32 32 33 33 34 34 35 36 ITU-T Recommendation 4.1521 Requirements on underlying networks and signalling protocols to support UPT 1 Scope UPT is a personal mobility telecommunications service wherein a subscriber/user can register at a te

20、rminal on any connected network and be provided with UPT service at that terminal location. This applies whether the terminal is fixed (wireline) or mobile (wireless), and independent of the type of network serving the terminal, e.g. PSTN, ISDN, PLMN. Further in this Recommendation, PLMN should be u

21、nderstood in a broad sense (including IMT-2000). This Recommendation is intended to provide the requirements on protocols, PSTN, ISDN, etc. to enable a correct end-to-end support of the UPT service. For the case where support of UPT service for a user spans several service providers or camers, it is

22、 assumed that appropriate business arrangements exist between the multiple providers to effect these requirements (either in a single political environment or not). This Recommendation specifies the requirements to be applied to underlying networks and protocols in order to have a good implementatio

23、n of UPT service. It mainly defines the points to be solved to ensure a good feature interaction between the services subscribed by the UPT user and those attached to the owner of the line where the UPT service is invoked. It addresses the UPT Service Set 1 features, and both CS-1 and CS-2, from a s

24、tage 2 perspective. 2 References 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 ar

25、e subject to revision; all 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. i ITU-T Recornmend

26、ation F.850 (1 993), Principles of Universal Personal Telecommunication (UPT). 2 ITU-T Recommendation F.85 1 (1 995), Universal Personal Telecommunication (UPT) - Service description (service set 1). 3 ITU-T Recommendation Q. 12 14 (1 995), Distributed functional plane for intelligent network cs-I.

27、4 ITU-T Recommendation Q. 12 18 (1 995), Interface Recommendation for intelligent network cs-I. 5 ITU-T Recommendation 4.71 (1993), ISDN circuit mode switched bearer services. 6 ITU-T Recommendation D.280 (1999, Principles for charging and billing, accounting and reimbursements for universal persona

28、l telecommunication. 7 ITU-T Recommendation F.853 (1998), Supplementary services in the Universal Personal Telecornmunication (UPT) environment. 81 ITU-T Recommendation E.164 (1997), The international public telecommunication num bering plan. 9 ITU-T Recommendation E.212 (1 998), The international i

29、dentlJication plan for mobile terminals and mobile users. 1 O 1 11 ITU-T Recommendation Q. 1224 (1 997), Distributed functional plane for intelligent network Capability Set 2. ITU-T Recommendation E. 168 (1 999), Application of E. 164 numberingplan for UPT. 3 Definition of terms 3.1 Terms defined in

30、 ITU-T F.851 2 The following terms are defined in ITU-T F.851 2: UPT (Universal Personal Telecommunication) UPT subscriber UPT user UPT service provider UPT number (UPTN) UPT access code (UPTAC) UPT service profile UPT service profile management Terminal address Network limitations Terms defined in

31、this Recommendation This Recommendation defines the following terms: 3.2.1 General terms 3.2.1.1 UPT capable network: A bearer network capable of processing UPT calls and procedures. This is a network equipped with the IN Functional Platform, the UPT Service Logic, and the UPT users data. The networ

32、k may or may not house the UPT users home network. 3.2.1.2 UPT assisting network: A bearer network capable of recognizing a UPT Access Code or a UPT Number (based on the E. 168 numbering plan) and requesting assistance of a UPT Capable Network (in CS-2 with the SCF-SCF interface). This is a network

33、equipped with the IN Functional Platform but not the complete UPT Service Logic. NOTE - In CS-3, some additional assistance could be used. 3.2.1.3 UPT supporting network: A bearer network capable of recognizing a UPT Access Code or a UPT Number (based on the E.168 numbering plan) and routing the cor

34、responding UPT call to a UPT or UPT-Assisting Network with which there is interworking and business agreement. This network is not equipped with the IN Functional Platform. However, it is capable of providing UPT specific information on call completion. 3.2.1.4 non-UPT supporting network: A bearer n

35、etwork that treats a UPT call as a regular voice call. This network treats the UPT Access Code or the UPT Number on call origination not as a UPT specific codehumber, but rather as an E. 164 number. 3.2.1.5 UPT environment: A UPT Environment consists of one or more bearer networks (PSTN, ISDN and PL

36、MN) as defined above. A minimum of one UPT Capable Network is required to be present in a UPT Environment. A UPT user can have access to his subscribed UPT service while roaming within a UPT Environment that includes the UPT users home network. A minimum of one UPT capable network is required in a U

37、PT Environment. 3.2.2 Specific terms 3.2.2.1 home network (HN): Home network with which the users UPT service provider is associated is described as the “home network“. The home network contains the database with the service profiles of the associated users. 3.2.2.2 originating network (ON): The “fi

38、rst“ network that is a UPT Network in the UPT call processing. If the network from which a user originates a UPT service request or outgoing UPT call is only UPT Supporting Network, the originating network will be the UPT Network to which this UPT Supporting Network will route the UPT call. 3.2.2.3

39、terminating network (TN): The called partys current network is the “terminating“ network. 3.2.2.4 home SDF: The “home SDF“ is the UPT service providers SDF in the home network, where the UPT users service profile is stored. It is designated SDFh. 3.2.2.5 originating SDF: The “originating SDF“ is the

40、 SDF of the UPT service provider associated with the originating network. It is designated SDFo. 3.2.2.6 SDFhA and SDFhB: Where it is necessary to distinguish between SDF of the A (calling) and B (called) UPT parties, the notations SDFhA and SDFhB are used. 4 Abbreviations This Recommendation uses t

41、he following abbreviations: API CCAF CCF CLI cs-I FE HLR IAM IF IMT-2000 IN ISDN ISUP LI OLE PBX PLMN PSTN PU1 SCF SCP Access Point Identity Call Control Agent Function Call Control Function Calling Line Identity Capability Set 1 Functional Entity Home Location Register Initial Address Message Infor

42、mation Flow International Mobile Telecommunications-2000 Intelligent Network Integrated Services Digital Network ISDN User Part Line Identity Originating Local Exchange Private Branch exchange Public Land Mobile Network Public Switched Telephone Network Personal User Identity Service Control Functio

43、n Service Control Point SDF SDFh SDFo SDP SMF SRF ss 1 SSF SSP TDP TLE UPT UPTAC UPTN VHE VLR Service Data Function Home Service Data Function Originating Service Data Function Service Data Point Service Management Function Specialized Resource Function Service Set 1 Service Switching Function Servi

44、ce Switching Point Trigger Detection Point (in BCSM) Terminating Local Exchange Universal Personal Telecommunication UPT Access Code UPT Number Virtual Home Environment Visited Location Register 5 Description of UPT UPT introduces the concept of UPT number. In fixed telecommunication networks, a use

45、r or subscriber is associated with the network access point of the terminal, the point of attachment of the terminal. In certain mobile telecommunication networks, a user or subscriber is associated with the specific terminal in use. In the UPT environment, the fixed association between terminal and

46、 user identification is removed. In order to offer users the capability of establishing and receiving calls on any terminal and at any location, the identification of UPT users is treated separately from the addressing of terminals and network access points. UPT user identification is achieved by us

47、e of a UPT number. The UPT user is therefore personally associated with his or her own UPT number, which is used as the basis for making and receiving calls. The UPT number is diallable on a global basis and routable from any fixed or mobile teminal, across multiple networks irrespective of geograph

48、ical location, limited only by the terminal and network capabilities and any restrictions imposed by the network operator. The UPT user may be assigned one or more UPT numbers. UPT also allows the UPT user to participate in a user-defined set of subscribed services, fi-om amongst which the user defi

49、nes personal requirements, to form a UPT service profile. 6 General requirements 6.1 General principles When a UPT user is invoking the service on a particular access, his service profile must apply there and replace the features attached to the subscription of the owner of the terminal. This requirement applies to any action of the UPT user as outgoing call, incoming call, registration or service profile management. This basic requirement implies: - the handling of a UPT call implies that the involved exchanges have the knowledge of the UPT characte