ITU-T Q 2769 1-2000 Support of Number Portability Information Across B-ISUP Series Q Switching and Signalling Broadband ISDN - B-ISDN Application Protocols for the Network Signalli.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU Q.2769.1 (06/2 O 00) SERIES Q: SWITCHING AND SIGNALLING Broadband ISDN - B-ISDN application protocols for the network signalling Support of number portability information across B-ISUP ITU-T Recommendation Q.

2、2769.1 (Formerly CCITT Recommendation) ITU-T Q-SERIES RECOMMENDATIONS SWITCHING AND SIGNALLING I SIGNALLING IN THE INTERNATIONAL MANUAL SERVICE FUNCTIONS AND INFORMATION FLOWS FOR SERVICES IN THE ISDN CLAUSES APPLICABLE TO ITU-T STANDARD SYSTEMS SPECIFICATIONS OF SIGNALLING SYSTEMS No. 4 AND No. 5 S

3、PECIFICATIONS OF SIGNALLING SYSTEM No. 6 SPECIFICATIONS OF SIGNALLING SYSTEM RI SPECIFICATIONS 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 INT

4、ERWORKING WITH SATELLITE MOBILE SYSTEMS INTELLIGENT NETWORK BROADBAND ISDN INTERNATIONAL AUTOMATIC AND SEMI-AUTOMATIC WORKING SIGNALLING REQUIREMENTS AND PROTOCOLS FOR IMT-2000 General aspects Signalling ATM adaptation layer (SAAL) Signalling network protocols Common aspects of B-ISDN application pr

5、otocols for access signalling and network signalling and intenvorking B-ISDN application protocols for the network signalling B-ISDN application protocols for access signalling Q. 1-4.3 Q.4-Q.59 4.60-4.99 Q. 1 00-Q. 1 1 9 Q. 120-4.249 Q.250-Q.309 4.310-4.399 4.400-4.499 Q.500-Q.599 4.600-4.699 4.700

6、-4.799 4.800-4.849 Q.850-Q.999 Q.lOOCrQ.1099 Q. 1 100-Q. 1 199 Q. 1200-4.1699 Q. 1700-4.1799 Q.2000-4.2999 4.2000-4.2099 4.2100-4.2199 4.2200-4.2299 4.2600-4.2699 Q.270O-Q.2899 4.2900-4.2999 For ftlrther details, please refer to the list of ITU-T Recommendations ITU-T Recommendation Q.2769.1 Support

7、 of number portability information across B-ISUP Summary This Recommendation provides support for transport of number portability related information across B-ISUP as a transit network. Source ITU-T Recommendation 4.2769.1 was prepared by ITU-T Study Group 11 (1997-2000) and approved under the WTSC

8、Resolution 1 procedure on 15 June 2000. FOREWORD The International 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 techni

9、cal, operating and tariff questions and issuing Recommendations 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,

10、 in turn, produce Recommendations on these topics. The approval 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 IE

11、C. NOTE In this Recommendation, the expression “Administration“ 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 Recommendatio

12、n may involve the use of a claimed Intellectual Property Right. 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

13、 this Recommendation, 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 therefore strongly urged to consult the TSB patent

14、database. O ITU 2001 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 fi-om ITU. I 1 2 3 4 5 5.1 5.2 6 7 7.1 7.2 7.3 7.4 7.5. 7.6 8 8.1 8.2 8.3 CON

15、TENTS Scope References Definitions Abbreviations . B-ISUP messages and parameters Messages . Parameters 5.2.1 Formats and coding . Application process procedures Application service elements and pnmitives Primitives between SACF and application process 7.1.1 Set-up requesthdication primitive 7.1.2 S

16、ubsequent-Directory-Number requesthndication primitive . Outgoing Messages Incoming Messages Primitives between CC ASE and SACF . 7.4.1 Call-Set-up requesthndication primitive . 7.4.2 Call - Subsequent - Directory-Number requesthndication primitive Outgoing CC ASE Incoming CC ASE . Instruction indic

17、ators and interworking Interworking with DSS2 . Interworking with nodes not supporting this feature Interworking with narrow-band ISUP 8.3.1 Mapping of initial address message 8.3.2 Mapping of the subsequent directory number message (national use) . Appendix I . Setting of instruction indicators . P

18、age 1 1 2 2 2 2 3 3 7 7 7 7 7 8 8 9 9 9 9 9 10 10 10 10 10 11 11 ITU-T Recommendation Q.2769.1 Support of number portability information across B-ISUP 1 Scope This Recommendation provides support for transport of number portability related information across B-ISUP as a transit network for the follo

19、wing scenarios: - separate directory number addressing method; - concatenated addressing method; and - separate network routing number addressing method. This Recommendation contains the additional message and parameter coding and interworking mapping tables for the support of transport of number po

20、rtability related information. NOTE - In B-ISUP the same addressing methods as in N-ISUP shall be used. 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 publica

21、tion, the 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

22、the currently valid ITU-T Recommendations is regularly published. ITU-T 4.2761 (1999), Functional description of the B-ISDN User Part of Signalling System No. 7. ITU-T 4.2762 (1 999), General Functions of messages and signals of the B-ISDN User Part (B-ISUP) of Signalling System No. 7. ITU-T Q.2763

23、(1999), Signalling System No. 7 B-ISDN User Part (B-ISUP) - Formats and codes. ITU-T Q.2764 (1999), Signalling System No. 7 B-ISDN User Part (B-ISUP) - Basic call procedures. ITU-T Q.2660 (1999), Interworking between signalling system No. 7 broadband ISDN User Part (B-ISUP) and narrow-band ISDN User

24、 Part (N-ISUP). ITU-T Q.761 (1 999), Signalling System No. 7 - ISDN User Part functional description. ITU-T 4.762 (1999), Signalling System No. 7 -ISDN User Part general function of messages and signals. ITU-T Q.763 (1 999), Signalling System No. 7 - ISDN User Part formats and codes. ITU-T Q.764 (1

25、999), Signalling System No. 7 - ISDN user part signalling procedures. ITU-T Q.769.1 (1999), Signalling System No. 7 - ISDN user part enhancements for the support of the number portability. 3 Definitions This Recommendation defines the following terms: 3.1 subsequent directory number message (SDM) (n

26、ational use): A message that may be sent in the forward direction following an Initial Address Message, to convey additional called party number information, when the called party number in the Initial Address Message was contained in the Called directory number parameter. 3.2 called directory numbe

27、r (national use): Information to indicate the directory number. The directory number is a number in the national numbering scheme that is allocated to a customer for a telephony service. 3.3 network routing number (national use): Information to indicate the network routing number. The network routin

28、g number is a number used by the network to route a call. 3.4 number portability forward information (network option): Information sent in the forward direction concerning treatment of number portability. Destination signalling identifier Subsequent number 4 Abbreviations This Recommendation uses th

29、e following abbreviations: B-ISDN B-ISUP DSS2 IAM Initial Address Message ISUP ITU-T SDM Subsequent Directory Number Message Broadband Integrated Services Digital Network Broadband Integrated Services Digital Network User Part Digital Subscriber Signalling System No. 2 Integrated Services Digital Ne

30、twork User Part International Telecommunication Union - Telecommunication Standardization Sector 7.481Q.2764 9 7. SSIQ .2764 7-15 5 B-ISUP messages and parameters 5.1 Messages The Subsequent Directory Number Message (SDM) is required to support number portability. The message name code allocated to

31、the SDM is O100 O01 1. Table 1 shows the parameters defined in the SDM. Table UQ.2769.1- Message type: Subsequent directory number (national use) Parameter Length (octets) Reference (clause) 5.2 Parameters Additional parameters and modifications to existing parameters, as described in this clause, a

32、re required to support number portability. 5.2.1 Formats and coding t Filler (if necessary) nth address signal 5.2.1.1 The format of the Called directory number parameter field is shown in Figure 1. The parameter name code allocated to the Called directory number parameter is O1 1 1 1101 Called dire

33、ctory number (national use) n 8 7 6 5 4 3 2 1 Octets Nature of address indicator I Figure 114.2769.1 - Called directory number parameter field The following codes are used in the subfields of the Called directory number parameter field: a) Odd/even indicator O 1 even number of address signals odd nu

34、mber of address signals b) Nature of address indicator O000000 spare O000001 subscriber number (national use) O000010 unknown (national use) O00001 1 O0001 O0 reserved O000101 network-specific number (national use) O0001 1 O reserved O0001 11 reserved O001 O00 reserved 0001001 national (significant)

35、 number (national use) to spare 11011 11 11 10000 reserved for national use 1111110 to 1 1111111 spare Internal network number indicator (INN ind.) O reserved 1 c) routing to internal network number not allowed d) Numbering plan indicator O00 reserved O0 1 ISDN (Telephony) numbering plan (ITU-T E. 1

36、64) O10 spare o1 1 reserved for national use 1 O0 reserved for national use 101 reserved for national use 110 reserved for national use 111 reserved e) Address signal O000 digit O O001 digit 1 O010 digit 2 O01 1 digit 3 O100 digit 4 0101 digit 5 o1 10 digit 6 o111 digit 7 1 O00 digit 8 1001 digit 9

37、1010 spare 1011 reserved 1100 reserved 1101 spare 1110 spare 1111 ST The most significant address signal is sent first. Subsequent address signals are sent in successive 4-bit fields. f) Filler In case of an odd number of address signals, the filler code O000 is inserted after the last address signa

38、l. Odd/ 1 Numbering plan indicator Even Nature of address 2nd address signal 1 st address signai 5.2.1.2 The format of the Network routing number parameter field is shown in Figure 2. The parameter name code allocated to the Network routing number parameter is 1000 0100. Network routing number (nati

39、onal use) 1 2 Filler (if necessary) nth address signal n The following codes are used in the subfields of the Network routing number parameter field: a) Odd/even indicator O 1 even number of address signals odd number of address signals Numbering plan indicator O00 spare O0 1 O10 spare o1 1 spare 1

40、O0 spare 1 o1 spare 110 reserved for national use 111 reserved for national use Nature of address indicator O000 spare 0001 O01 o o spare 1010 “4 reserved for national use 1111 Address signal O000 digit O O001 digit 1 O010 digit 2 O01 1 digit 3 O100 digit 4 O101 digit 5 O110 digit 6 o111 digit 7 1 O

41、00 digit 8 1001 digit 9 1010 spare 101 1 spare 1100 spare 1101 spare 1110 spare 1111 spare Filler In case of an odd number of address signals, the filler code O000 is inserted after the last address signal. ISDN (Telephony) numbering plan (ITU-T E. 164) network routing number in national (significan

42、t) number format (national use) network routing number in network specific number format (national use) 5.2.1.3 The format of the Number portability forward information parameter field is shown in Figure 3. The parameter name code allocated to the Number portability forward information parameter is

43、1000 1101. Number portability forward information (network option) 8 7 6 5 4 3 2 1 Octet ext. 1 1 Number portability status ind. Spare Figure 3/Q.2769.1 - Number portability forward information parameter field The following codes are used in the subfields of the Number portability forward informatio

44、n parameter field: a) Extension indicator O 1 last octet information continues through the next octet (e.g. octet 1 to la) b) Number portability status indicator O000 no indication O001 O010 O01 1 O: spare number portability query not done for the called number number portability query done for the

45、called number, non-ported called subscriber number portability query done for the called number, ported called subscriber 1111 5.2.1.4 Called party number The contents of the Called party number parameter as defined in ITU-T 4.2763 is modified with four additional codepoints as shown below: Nature o

46、f address indicator O000000 spare O000001 subscriber number (national use) O00001 O unknown (national use) 000001 1 national (significant) number O0001 O0 international number O000 1 O1 O0001 10 O0001 1 1 O001 O00 network-specific number (national use) network routing number in national (significant

47、) number format (national use) network routing number in network-specific number format (national use) reserved for network routing number concatenated with Called Directory Number (national use) 0001001 spare 1101111 11 10000 reserved for national use 1111110 1111111 spare Set-up requesthndication

48、Called directory number Network routing number Number portability forward information 6 Application process procedures No additional procedures are required to support transport of number portability related information. Procedures defined in ITU-T Q.2764 are applicable. B-ISDN N-ISDN O O O O O O 7

49、The following clause identifies impacts on the B-ISUP application service elements, the SACF and the primitives exchanged between ASES and SACF as shown in ITU-T 4.2764. It should therefore be read in conjunction with ITU-T 4.2764. Application service elements and primitives Message Compatibility Information Subseauent number 7.1 7.1.1 Set-up requesthdication primitive Table 2 shows additional parameters for the Set-up requesthndication primitive. Primitives between SACF and application process O O O O Table 2/Q.2769.1 - Parameters for Set-up requesthdication primitive 7.1.2 Subse