1、. - STD-ITU-T RECMN Q=?OB-ENGL L999 486259L 06640LL 290 INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.708 (03199) SERIES Q: SWITCHING AND SIGNALLING Specifications of Signalling System No. 7 - Message transfer part (MTP) Assignment procedures for inter
2、national signalling point codes ITU-T Recommendation Q.708 (Previously CCITT Recommendation) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesSTD-ITU-T RECMN Q-308-ENGL 1999 U 48b2591i Obb40L2 127 ITU-T Q-SER I ES RECOMMENDATIONS SWITCHI
3、NG AND SIGNALLING ;IGNALLING IN THE INTERNATIONAL MANUAL SERVICE Q.1-Q.3 NTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING Q .4-Q. 59 UNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN Q .60-Q . 99 :LAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS Q.100-Q.119 3PECIFICATIONS OF SIGNALLING SYSTEMS No.
4、 4 AND No. 5 Q. 1 20-Q .249 SPECIFICATIONS OF SIGNALLING SYSTEM No. 6 Q.250-Q.309 SPECIFICATIONS OF SIGNALLING SYSTEM Rl Q .310-Q.399 3PECIFICATIONS OF SIGNALLING SYSTEM R2 Q.400-Q.499 IIGITAL EXCHANGES Q.500-Q.599 NTERWORKING OF SIGNALLING SYSTEMS Q.600-Q ,699 3PECIFICATIONS OF SIGNALLING SYSTEM No
5、. 7 Q.700-Q.849 General Q.700 Message transfer part (MTP) Q.701-Q.709 Signalling connection control part (SCCP) Telephone user pari (TUP) ISDN supplementary services Data user part Signalling System No. 7 management ISDN user part Transaction capabilities application part Test specification Q3 inter
6、face DIGITAL SUBSCRIBER SIGNALLING SYSTEM No. 1 PUBLIC LAND MOBILE NETWORK INTERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND ISDN Q.711-Q.719 Q.720-Q.729 Q .730-Q .739 Q.740-Q.749 Q.750-Q.759 Q.760-Q.769 Q.770-Q.779 Q.780-Q.799 Q.800-Q.849 Q.850-Q.999 Q. 1000-Q. 109! Q. I 1 OO
7、-Q. 1 19! Q. 1200-Q.199! Q.2000-Q.299 For further details, please refer to ITU-T List of Recommendations. COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services- STD-ITU-T RECMN Q-708-ENGL 1997 M 4862573 O664033 Ob3 H ITU-T RECOMMENDATION Q.7
8、08 ASSIGNMENT PROCEDURES FOR INTERNATIONAL SIGNALLING POINT CODES Summary This Recommendation describes the format of the code used to identi international signalling points in the international Signalling System No. 7 network which is identified by the Network Indicator NI=OO. This Recommendation,
9、additionally, includes principles and procedures for the assignment of Signalling AreaNetwork Codes and International Signalling Point Codes. Source ITU-T Recommendation 4.708 was revised by ITU-T Study Group 11 (1997-2000) and was approved under the WTSC Resolution No, 1 procedure on the 15th of Ma
10、rch 1999. Recommendation 4.708 (03199) i COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesSTDOITU-T RECMN Q-708-ENGL 1999 W 4862591 0664014 TTT M FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agen
11、cy 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 standardizing telecommunications on a wo
12、rldwide 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
13、 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 term recognized operating agency (ROA) includes any individu
14、al, company, 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). INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the pra
15、ctice 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 d
16、evelopment 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 ar
17、e therefore strongly urged to consult the TSB patent database. O ITU 1999 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 the ITU. 11 Recomme
18、ndation Q.708 (03/99) - COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesCONTENTS 1 Scope 2 References 3 Definitions 4 Abbreviations . 5 Format ofthe ISPC . 6 General principles . 7 Assignment procedures 8 Criteria for the assignment of
19、a SANC 9 1 O 1 1 12 Criteria for the assignment of an ISPC . Responsibilities of the Director of the TSB . Responsibilities of the Administration . Signalling point operator responsibilities . 13 Annex A . Notification of Assignment or Withdrawal of International Signalling Point Expansion ofthe ISP
20、C resource . Codes (ISPC) for Signalling System No . 7 Annex B . Proposed form to be used in accordance with provisions of subclause 9.7 Annex C . Assignment evolution Page 1 1 1 1 2 4 5 5 6 6 8 10 11 . Recommendation Q.708 (03/99) 111 COPYRIGHT International Telecommunications Union/ITU Telecommuni
21、cationsLicensed by Information Handling ServicesSTD-ITU-T RECMN Q.708-ENGL 1799 4862571 06b4036 872 Introduction The worldwide signalling network has two functionally independent levels: the international level and the national level. This provides for a clear division of responsibility for signalli
22、ng network management and allows identification plans of signalling points in the international network and the different national networks to be independent of one another. Within the international Signalling System No. 7 network a signalling point is identified by an International Signalling Point
23、 Code (ISPC). The use of an ISPC within a signalling message and the technical aspects of the signalling network are described in Recommendations of the Q.7xx series. iV Recommendation 4.708 (03/99) - COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Hand
24、ling ServicesRecommendation Q.708 ASSIGNMENT PROCEDURES FOR INTERNATIONAL SIGNALLING POINT CODES (revised in 1999) 1 Scope This Recommendation describes the format of an ISPC in the international Signalling System No. 7 network identified by the Network Indicator NI=OO. Additionally, it provides pri
25、nciples and procedures for the assignment of both Signalling Aremetwork Code (SANCs) and ISPCs. 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, th
26、e editions indicated were valid. All Recommendations and other references are 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 curr
27、ently valid ITU-T Recommendations is regularly published. 11 ITU-T Recommendation 4.700 (1993), Introduction to CCITT Signalling System No. 7. 3 Definitions This Recommendation defines the following terms: 3.1 signalling point: A node in a signalling network that originates and receives signalling m
28、essages, or transfers signalling messages from one signalling link to another, or both. 3.2 signalling relation: An association between two signalling points that allows interexchange of Signalling System No. 7 messages. 3.3 signalling point code: A code used to identifj a signalling point and proce
29、ssed within the Message Transfer Part (MTP) of each signalling point and within users of the MTP. 3.4 international signalling point code (ISPC): A signalling point code with a unique 14-bit format used at the international level for signalling message routing and identification of signalling points
30、 involved. The ISPC is used in signalling messages containing the Network Indicator NI=OO. 4 Abbreviations This Recommendation uses the following abbreviations: GMSC Gateway Mobile Switching Centre ISC International Switching Centre ISPC International Signalling Point Code ITU International Telecomm
31、unication Union ITU-T LR Location Register MTP Message Transfer Part International Telecommunication Union - Telecommunication Standardization Sector Recommendation 4.708 (03199) 1 - COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesSTD-I
32、TU-T RECMN Qm708-ENGL 1999 3 bits LA 8 bits LA 3 bits 4 Signalling point 4 Signalling area network code (SANC) identification r7 NI Network Indicator NMC Network Management Centre OMC Operation and Maintenance Centre SANC Signalling Aremetwork Code SCCP Signalling Connection Control Part SCP Service
33、 Control Point SEP Signalling End Point SP Signalling Point SSP Service Switching Point STP Signalling Transfer Point TSB Telecommunication Standardization Bureau 5 Format of the ISPC 5.1 The format of the 14-bit binary code used for the identification of international signalling points is illustrat
34、ed in Figure 1. The binary code is represented by three (3) decimal numbers: the first indicating the three (3) most significant bits (NML), with a range of O to 7; the second indicating the following eight (8) bits (K-D), with a range of O00 to 255; and the third consisting of the three (3) least s
35、ignificant bits (CBA), with a range of O to 7. The combination of the fields containing bits NML and bits K-D is regarded as the SANC. The three (3) bits (CBA) identifj a specific signalling point which when combined with the SANC forms the 14-bit ISPC (e.g. 2-068-1). IN M LIK J I H G F E DIC B Al I
36、 International signalling point code (ISPC) T1110513O-99 Figure 1lQ.708 - Format of the International Signalling Point Code (ISPC) 5.2 used individually in any way by the protocol or signalling functions. The fields within the format of the ISPC have only an administrative use and are not to be 6 Ge
37、neral principles 6.1 The SANCISPC resource should be managed in such a manner as to ensure adequate capacity to meet the demand for the resource. The need for conservation of the resource is not a reason in itself to deny an application for the assignment of the resource. 6.2 SANCDSPC resources shou
38、ld be efficiently utilized and managed (e.g. only a single ISPC is to be assigned to a signalling point). 6.3 SANChSPC resources are to be assigned with fairness and equity. 6.4 Assignment confers use of the SANC and ISPC resource but does not imply ownership by the Member State and signalling point
39、 operator, respectively. 2 Recommendation 4.708 (03/99) COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling ServicesSTDOITU-T RECMN .708-ENGL 1999 = 48b2591i Obb4019 581 6.5 Signalling point codes for the national level and the international level
40、are assigned separately. The assignment of a point code in a national network does not automatically entitle the code holder to an ISPC. 7 Assignment procedures 7.1 SANCs shall be assigned by the Director of the TSB to a Member State1.2, Country (or geographical area). 7.2 A single SANC is to be ini
41、tially assigned to a new Member State. The SANC is combined with eight signalling point identifications to create eight ISPCs. 7.3 An ISPC(s) is to be assigned, as required, to signalling point operators by each Member States designated Administrator3 in accordance with the rules and procedures of t
42、he Member State and this Recommendation. ISPC assignments will be on an individual ISPC basis and not on a SANC basis. The Administrator will noti the Director of the TSB of the assignment. 7.4 The SANC ranges beginning with O and 1 (identified by bits NML in Figure 1) are reserved for future use. 7
43、.5 Assignment of a SANC(s) to a Member State will be made from spare SANCs within the same range from which SANCs have been currently assigned to that Member State. If there are no available spares within this range, the TSB will assign a SANC(s) from available spare(s) in another range. 7.6 A signa
44、lling point4 is assigned only one ISPC. 7.7 An ISPC(s) may be assigned by the Administrator for test purposes. However, this assignment should not be considered a permanent one and may be subject to reassignment as necessary. 7.8 An ISPC derived from a SANC assigned to a Member State is expected to
45、be used within the territory of that Member State. 7.9 In exceptional cases, an ISPC derived from a SAW assigned to one Member State may be used in another Member State with the agreement of the Administrations of both Member States (see 9.7). 7.10 ISPCs are not transferable between signalling point
46、 operators. ISPCs may not be sold, licensed or traded by the signalling point operators. ISPCs may not be transferred, except in the case of a merger, acquisition, divestiture, or joint venture. The Administrator(s) shall be notified of any such transfer by the signalling point operators. * The term
47、s “Member State“, “Country“ (or geographical area), andor “Administration“ shall be considered to have the same meaning for purposes of this Recommendation. For purposes of this Recommendation, Intergovernmental Organizations Operating Satellite Systems may be assigned SANCs. The term “Administrator
48、“ is to be used hereafter to indicate a Member States/Administrations designated Administrator for the purpose of requesting SANCs or assigning ISPCs. A signalling point being a part of more than one signalling network, e.g. when serving as an international gateway, should be assigned a signalling p
49、oint in each signalling network. Recommendation Q.708 (03/99) 3 COPYRIGHT International Telecommunications Union/ITU TelecommunicationsLicensed by Information Handling Services8 8.1 the TSB. 8.2 the TSB notification (see 1 1.2) of the current assignment of ISPCs by that Administration. 8.3 SANCs previously assigned to the Administration concerneds. Criteria for the assignment of a SANC A request for a SANC(s) is to be made by the Administration in writing to the Director of In order to request an additional SANC(s) an Administration must provide the D
