ITU-T SERIES Q SUPP 3-1998 Number Portability - Scope and Capability Set 1 Architecture - Series Q Switching and Signalling (Study Group 11 50 pp)《号码可携带性 - 范围和能力集1体系结构-Q系列 交换和信令 研究.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Series Q Supplement 3 (05/98) SERIES Q: SWITCHING AND SIGNALLING Number portability - Scope and capability set I architecture ITU-T Q-series Recommendations - Supplement 3 (Previously CCITT Recommendations) I

2、TU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 SPECIFICATIONS OF SIGNALLING SYSTEM N

3、o. 6 SPECIFICATIONS OF SIGNALLING SYSTEM R1 SPECIFICATIONS OF SIGNALLING SYSTEM R2 DIGITAL EXCHANGES INTERWORKING OF SIGNALLING SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEM No. 7 DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGE

4、NT NETWORK BROADBAND ISDN CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.1-(2.3 Q .4-Q. 59 Q.60-Q.99 Q. 100-Q.119 Q.120-Q.249 Q.250-Q.309 Q.310-(2.399 Q.400-Q.499 Q.500-Q.599 Q.600-Q.699 Q. 700-Q . 849 Q. 850-Q . 999 Q.1000-Q.1099 Q.11 OO-Q.1199 Q.1200-Q. 1999 Q.2000-Q.2999 Forjrther details, please

5、 refer to ITU-T List of Recommendations. 48b259L ObbL292 58T SUPPLEMENT 3 TO ITU Q-SERIES RECOMMENDATIONS NUMBER PORTABILITY - SCOPE AND CAPABILITY SET 1 ARCHITECTURE Summary This Supplement describes number portability in terms of high-level service definitions and terminology and presents a set of

6、 high-level network architectures and generic routing methods for NP. These architectures and routing methods are not to be considered exhaustive; they just illustrate some of the options. Other alternatives do exist and may be covered by fture capability sets. Source Supplement 3 to ITU-T Q-series

7、Recommendations was prepared by ITU-T Study Group 11 (1997-2000) and was approved under the WTSC Resolution No. 5 procedure on the 15th of May 1998. Q series - Supplement 3 (05/98) 1 48b25L ObbL293 416 E FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in

8、 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 standardizing telecommunications on a worldwi

9、de 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 Members of the ITU-T is covered by t

10、he procedure laid down in WTSC Resolution No. 1. In some areas of information technology which fali within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation the term recognized operating agency (ROA) includes any individual, c

11、ompany, corporation or governmental organization that operates a public correspondence service. The terms Administration, ROA and public correspondence are defined in the Constitution of the ITU (Geneva, 1992). I INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practi

12、ce or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. 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 deve

13、lopment 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 required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are t

14、herefore strongly urged to consult the TSB patent database. O ITU 1998 Ail 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 the ITU. II Q series -

15、 Supplement 3 (05/98) 4862593 0663294 352 I CONTENTS Page 1 Scope 1 2 Normative references . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . i 3 Definitions . . . . .

16、 . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . . . . , . . . . . . . . . . . . . . . . . . . 2 3.1 Entities . , 2 3.5 Numbers . 3 3.6 Networks . 3 3.7 Exchanges . 4 3.8 Other

17、 definitions . . . .,. . . . . . . . . . 4 4 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 5 Objectives . . . .

18、. . . . . . . . . . . 5 6 Classification of Number Portability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.1 Location Portability 7 7 6.2 Service Portability 8 6.3 Service Provider Portability . . . . .

19、 . . 8 6.4 Concatenation of types of Number Portability . 8 9 6.5 Number Portability domains . . . . . . . . . . . 7 7.1 Generic assumptions for Number Portability . . . . . . . . . . . , . . . . . 7.2 How is Number Portability generically performed 10 Implications of Number Portability . . . . . .

20、. . . . . . 10 10 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . , . . . . . . . . . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.3 11 8 High-level network models f

21、or Service Provider Portability of Geographic Numbers . . . . . . . . . . . . . . 8.1 Background information . 8.2 General introduction to described models 8.3 Call re-routing initiatedperformed by Donor Network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22、. 8.3.1 Call re-routed from Donor Network by use of onward routing principles Call re-routing initiatedperformed by Transit Network prior to Donor Network . 8.4.1 Re-routing initiated by “All call query one-step“ principles . Call re-routing performed by Originating Network . . . . . . . . . , . 8.5

23、.1 Re-routing initiated by “All call query one-step principles . . . . . . . . . Call re-routing to Recipient performed by a two-step number translation principle 8.6.1 General description . 8.6.2 Onward routing by Donor combined with query by Recipient Network 8.4 8.5 8.6 13 13 13 15 15 18 18 20 20

24、 23 23 23 . Q series - Supplement 3 (0998) 111 = 48b2591 Obb1295 299 W 8.7 9 9.1 9.2 9.3 10 10.1 10.2 10.3 10.4 , 10.5 10.6 10.7 I iv 8.6.3 8.6.4 Recipient Network . 8.6.5 Interaction with supplementary services . 8.6.6 Interaction with IN-based services 8.6.7 Interaction with carrier selection . 8.

25、6.8 Interaction with statistical counters . 8.6.9 Required Forward information transfer between Networks 8.6.1 O Required backward information transfer between networks . 8.6.1 1 Call re-routing performed by using “All call query all involved networks“ “All call query“ by Transit Network combined wi

26、th query by Recipient Network . “All call query“ by Originating Network combined with query by NP routing loop detection issues . principles 8.7.1 General description . Interaction with supplementary services . Interaction with IN-based services Interaction with carrier selection . Interaction with

27、statistical counters . Required forward information transfer between networks 8.7.2 8.7.3 8.7.4 8.7.5 8.7.6 8.7.7 8.7.8 Required backward information transfer between networks . NP routing loop detection issues . Network architecture for non-circuit-related signalling support for ported Geographic N

28、umbers Background information . Addressing requirements for routing of non-circuit-related messages . Network architecture models 9.3.1 Non-circuit-related message re-routing by the Donor NetworkExchange . 9.3.2 Non-circuit-related message re-routing by the Originating 9.3.3 Non-circuit-related mess

29、age re-routing at the SPR . NetworkExchange Generic Distributed Functional Entity Model for Number Portability General information Call Control Function (CCF) Call Control Portability Function (CCPF) Number Portability Control Function (NPCF) . Number Portability Data Function (NPDF) . Number Portab

30、ility Management Function (NPMF) . Master Number Portability Management Function (M-NPMF) Q series . Supplement 3 (05198) Page 26 27 29 29 30 30 30 30 30 30 30 33 33 33 33 33 33 33 33 33 34 34 34 35 36 37 37 39 39 39 39 39 40 W 48b259L ObbL2b 325 1 1 Service Provider Portability for Non-Geographic N

31、umbers (NGNP) 12 Concatenation of Service Provider Portability for Non-Geographic Numbers (NGNP) and Geographic Numbers (GNP) . 13 14 Routing and addressing of calls towards portable numbers . Routing and addressing for calls fiom portable numbers . Annex A . IN support for Service Provider Portabil

32、ity of Geographic Numbers . IN trigger conditions, circuit-related signalling to Geographic Numbers A . 1 A.2 General information A.2.1 General information IN trigger conditions. non-circuit-related signalling to Geographic Numbers . A.3 Page 40 40 40 40 41 41 42 42 42 Supplement 3 to Q-series Recom

33、mendations NUMBER PORTABILITY - SCOPE AND CAPABILITY SET 1 ARCHITECTURE (Geneva, 1998) 1 Scope This Supplement describes Number Portability in terms of high-level service definitions and terminology and presents a set of high-level network architectures and generic routing methods for NP. These arch

34、itectures and routing methods are not to be considered exhaustive; they just illustrate some of the options. Other alternatives do exist and may be covered by future capability sets. To support the routing methods identified, enhancements to signalling protocols are required (initially, not all the

35、architectures and routing methods will be supported by the signalling protocols). These signalling enhancements will be phased in NP capability sets. The following are included in this Supplement: a) number portability terminology; b) c) classification of number portability; d) generic assumptions;

36、e) f) g) h) i) NP architectures both for routing of ordinary calls (circuit-related signalling) and for routing of non- circuit-related supplementary services (e.g. CCBS) are included. Only Service Provider Portability (SPP) of Geographic Numbers is considered in detail; however, some text is includ

37、ed on SPP of Non-Geographic Numbers, although this type of NP is still under study. objectives for the study of number portability; a set of network architectures to support number portability; the exchange of NP-related information between networks per architecture; routing issues with relation to

38、NP and the described architecture; generic Information flows for the described architectures; address types on routing towards portedportable numbers. 2 Normative references 11 ITU-T Recommendation E. 164 (1 997), The international public telecommunication The normative references for supplementary

39、services are covered in the Q.73 and Q.76 series of Recommendations. numbering plan. Q series - Supplement 3 (05/98) 1 3 Definitions 3.1 Entities 3.1.1 network operator: An entity that operates a network in order to route calls. 3.1.2 service provider: An entity that offers services to users involvi

40、ng the use of network resources, The “Service Provider“ is understood in this Supplement in a generic way and may have different status according to the service provided. For example, “Service Provider“ refers to a local loop operator in the case of Geographic Numbers, or to a mobile operator in the

41、 case of Mobile Numbers, or to a service operatorreseller in the case of Service Numbers. 3.2 service provider portability: The ability of an end user to retain the same E.164 international public telecommunication number when changing from one service provider to another. 3.2.1 donor service provid

42、er: The Service Provider from whom the number was initially ported. 3.2.2 recipient service provider: The Service Provider to whom the number is ported. 3.2.3 service provider portability for geographic numbers: The ability of an end user to retain the same geographic E. 164 international public tel

43、ecommunication number when changing from one service provider to another without changing their location, and without changing the nature of the service offered. The service provider portability for geographic numbers is also known as Geographic Number Portability (GNP), also known as Local Number P

44、ortability (LNP). 3.2.4 service provider portability for Non-Geographic Numbers (NGNP): The ability of an end user to retain the same non-geographic E. 164 international public telecommunications number when changing from one service provider to another without changing the nature of the service off

45、ered. 3.2.5 service provider portability for mobile numbers: The ability of an end user to retain the same mobile E. 164 international public telecommunications number when changing from one service provider to another without changing the nature of the service offered. 3.3 location portability: The

46、 ability of an end user to retain the same E. 164 international public telecommunication number when moving from one location to another. Four variants of Location Portability can be seen to exist: 1) within exchange area; 2) within numbering area; 3) within charge area; 4) anywhere. 3.4 telecommuni

47、cation number when changing from one type of service to another. service portability: The ability of an end user to retain the same E. 164 international public 2 Q series - Supplement 3 (0998) 3.5 Numbers Non-Geographic Number examples Table 1 - Classification of directory number as geographic and n

48、on-geographic numbers Directory number Geographic Number examples Mobile number Other geographic number Mobile number Service number Other non-geographic number 3.5.1 Directory Number (DN): A number in the national numbering scheme that is allocated to a customer for a telephony service. Allocation

49、of the Directory Number is made directly by the NPA to the customer, or indirectly when blocks of numbers are managed by Service Providers. The Directory Number is the number that is dialled by the users to reach the customer (potentially with prefix and/or with sufflx). 3.5.2 end users number: The E.164 number used by the calling party to establish a call to the end user. This number is also used for presentation services like Calling Line Identification Presentation (CLIP) and Connected Line Identification Presentation (COLP). NOTE - The End Users Numb