1、EUROPEAN - 1 ELECOMMUNICATION STANDARD ETS 300 663-1 September 1996 Source: ETSI TC-SPS Reference: DE/SPS-05073-1 ICs: 33.080 Key words: B-ISDN, DSS2, supplementary service, CLIP Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Cal
2、ling Line Identification Presentation (CLIP) supplementary service; Part 1 : Protocol specification ITU-T Recommendation Q.2951, clause 3 (1995), modified ETSI European Telecommunications Standards Institute ETSI Secretariat Postal address: F-O6921 Sophia Antipolis CEDEX - FRANCE Office address: 650
3、 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE X.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariatQetsi.fr Tel.: +33 92 94 42 O0 - Fax: +33 93 65 47 16 Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the fore
4、going restriction extend to reproduction in all media. 0 European Telecommunications Standards Institute 1996. All rights reserved. ETSI ETS*300*bb3- I 9b m 3400855 0333386 648 m Page 2 ETS 300 663-1 : September 1996 Foreword This European Telecommunication Standard (ETS) has been produced by the Si
5、gnalling Protocols and Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI). This ETS is part 1 of a multi-part standard covering the Digital Subscriber Signalling System No. two (DSS2) protocol specification for the Broadband Integrated Services Digital
6、Network (B-ISDN) Calling Line Identification Presentation (CLIP) supplementary service, as described below: Part 1: “Protocol specification ITU-T Recommendation Q.2951, clause 3 (1995), modified“; Part 2: “Protocol Implementation Conformance Statement (PICS) proforma specification“; Part 3: “Test Su
7、ite Structure and Test Purposes (TSS Part 4: “Abstract Test Suite (ATS) and partial Protocol Implementation extra Information for Testing (PIXIT) proforma specification for the user“; Part 5: “TSS Part 6: “ATS and partial PIXIT proforma specification for the network. In accordance with CCITT Recomme
8、ndation 1.130, the following three level structure is used to describe the supplementary telecommunication services as provided by European public telecommunications operators under the pan-European B-ISDN: - Stage 1: is an overall service description, from the users standpoint; - Stage 2: identifie
9、s the functional capabilities and information flows needed to support the service described in stage 1 ; and - Stage 3: defines the signalling system protocols and switching functions needed to implement the service described in stage 1. This ETS details the stage 3 aspects (signalling system protoc
10、ois and switching functions) needed to support the Calling Line Identification Presentation (CLIP) supplementary service. The stage 1 and stage 2 aspects of the equivalent N-ISDN supplementary service are detailed in ETS 300 089 and ETS 300 O91 respectively, and these have been assumed as appropriat
11、e to be the foundation for the equivalent B-ISDN supplementary service specifications. Transposition dates Date of adoption of this ETS: Date of latest announcement of this ETC (doa): Date of latest publication of new National Standard or endorsement of this ETS (dop/e): Date of withdrawal of any co
12、nflicting National Standard (dow): 6 September 1996 31 December 1996 30 June 1997 30 June 1997 Endorsement notice The text of ITU-T Recommendation Q.2951, clause 3 (1995) was approved by ETSI as an ETS with agreed modifications as given below. NOTE: New or modified text is indicated using sidebars.
13、In addition, underlining and/or strike- out are used to highlight detailed modifications where necessary. Whilst every care has been taken in the preparation and publication of this document, errors in content, typographical or otherwise, may occur. If you have comments concerning its accuracy, plea
14、se write to “ETSI Editing and Committee Support Dept.“ at the address shown on the title page. ETSI ETS*300*bb3- II 96 3Ll00855 0133387 584 = Page 3 ETS 300 663-1 : September 1996 subclause 3.1 Replace subclause 3.1 by: 3.1 Scope This first part of ETS 300 663 specifies the stage three of the Callin
15、g Line Identification Presentation (CLIP) supplementary service for the pan-European Broadband Integrated Services Digital Network (B-ISDN) as provided by European public telecommunications operators at the TB reference point or coincident S, and TB reference point (as defined in ITU-T Recommendatio
16、n 1.413 i) by means of the Digital Subscriber Signalling System No. two (DSS2) protocol. Stage three identifies the protocol and procedures and switching functions needed to support a telecommunication service (see ITU-T Recommendation 1.130 2). In addition, this ETS specifies the protocol requireme
17、nts at the TB reference point where the service is provided to the user via a private B-ISDN. This ETS does not specify the additional protocol requirements where the service is provided to the user via a telecommunications network that is not a B-ISDN. The CLIP supplementary service provides the ca
18、lled party with the possibility of receiving identification of the calling party. The CLIP supplementary service is applicable to all telecommunication services. Further parts of this ETS specify the method of testing required to identify conformance to this ETS. This ETS is applicable to equipment,
19、 supporting the CLIP supplementary service, to be attached at either side of a TB reference point or-coincident SB and TB reference.point when used as an access to the public B-ISDN. subclause 3.2, first paragraph Replace the first paragraph of subclause 3.2 by: This ETS incorporates by dated and un
20、dated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this ETS only when incorporated
21、 in it by amendment or revision. For undated references the latest edition of the publication referred to applies. subclause 3.2 Insert the following references at the end of subclause 3.2: Pl CCITT Recommendation T.50 (1 988): “International Alphabet No. 5“. PI 91 ETS 300 443-1 : “Broadband Integra
22、ted Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user- network interface layer 3 specification for basic callhearer control; Part 1: Protocol specification ITU-T Recommendation Q.2931 (1 995), modified“. ETC 300 669-1 : “Broadband Integrated
23、 Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; Supplementary service interactions; Part 1 : Protocol specification“. ETSI ETSa300abb3- 3 7b = 3400855 0333388 430 Page 4 ETS 300 663-1 : September 1996 Throughout the text of ITU-T Recommendation Q.295
24、1, clause 3 I Recommendation Q.2951, clause 3 ITU-T Recommendation Q.2931 3 Replace references as shown in the following table. I Reference in ITU-T I Modified reference ITU-T Recommendation Q.2931 as modified by ETS 300 443-1 8 I I subclause 3.3, six last paragraphs address: The ISDN number of the
25、calling user, and a subaddress if provided by that user. international number: An ISDN number structured as specified in subclause 3.2 (in the paragraphs relating to international number) of ITU-T Recommendation E.164 4. national number; national significant number: An ISDN number structured as spec
26、ified in subclause 3.2 (in the paragraphs relating to national number) of ITU-T Recommendation E.164 4. subscriber number: An ISDN number structured as specified in subclause 3.2 (in the paragraphs relating to subscriber number) of ITU-T Recommendation E.164 4. default number: An ISDN number registe
27、red within the public ISDN following prior agreement between the calling user and the public ISDN. special arrangement: An agreement between a customer and a public network operator whereby customer supplied calling numbers are not screened by the public ISDN. subaddress: See ITU-T Recommendation E.
28、164 4, subclause 12.2. IA5 characters: See CCITT Recommendation T.50 7. Replace the definitions of “address“, “international number“, “national number; national significant number“, “subscriber number“, “default number“ and “special arrangement“ by the following revised definitions and add two new d
29、efinitions: subclause 3.5, first paragraph Replace the first paragraph by: The CLIP supplementary service is a supplementary service offered to the called user. It provides the calling users ISDN number, possibly with the calling users subaddress information to the called user. subclause 3.9.2.3.1,
30、fourth paragraph Replace the fourth paragraph “If presentation (.) options:“ and its two bullet items by: If the calling number is available, but presentation is not allowed according to the presentation indicator supplied together with the calling number, the network shall include the Calling numbe
31、r information element in the SETUP message sent to the called user. The presentation indicator in the Calling party number information element shall indicate “presentation restricted“. The type of number and the numbering plan identification shall be set to “unknown“ and the number digits field shal
32、l not be included. I ETSI ETS*300*bb3- II 96 = 3400855 0333389 357 H Page 5 ETS 300 663-1 : September 1996 subclause 3.9.2.3.1. last paragraph and note Replace the last paragraph “If presentation (.) called user“ and the following note by the two notes: NOTE 1: If the presentation indicator in the C
33、alling party number information element received by the user is set to “number not available due to interworking“ or “presentation restricted“, the remaining information in the Calling party number information element should be ignored by the user. NOTE 2: Depending on national regulations, some net
34、works may define categories of subscribers that have the ability to override the presentation restriction and have the calling partys ISDN number, and subaddress information (if any) presented (e.g. the police). The ability to override the presentation restriction and the protocol to support such a
35、service is a national matter. subclause 3.1 1 .I Replace the complete text of subclause 3.1 1.1 by: This subclause specifies the particular features to support access signalling interworking between B-ISDN and N-ISDN. The description of interworking assumes the communication scenario B as defined in
36、 annex A of ITU-T Recommendation 1.580 SI. Interworking N-ISDN - B-ISDN The DSSl Calling party number information element is mapped to the DSS2 Calling party number information element by the interworking function or terminal adaptor by inserting the second octet and changing the length indication f
37、rom one to two octets. The DSSl Calling party subaddress information element is mapped to the DSS2 Calling party subaddress information element by the interworking function or terminal adaptor by inserting the second octet and changing the length indication from one to two octets. NOTE: It is recomm
38、ended that the flag bit in octet 2 is set to “instruction field not significant“, .e. the normal error handling procedures as defined in ETS300443-1 a, subclause 5.6 apply. Interworking B-ISDN - N-ISDN The DSS2 Calling party number information element is mapped to the DSS1 Calling party number infor
39、mation element by the terminal adaptor or interworking function by removing its second octet and adjusting the length indication without causing other changes to the contents and by respecting the order of this information element in the DSSl message. The DSS2 Calling party subaddress information el
40、ement is mapped to the DSSl Calling party subaddress information element by the terminal adaptor or interworking function by removing its second octet and adjusting the length indication without causing other changes to the contents and by respecting the order of this information element in the DSSl
41、 message. ETSI ETS*300*bb3- L 96 D 3400855 0333390 079 m Page 6 ETS 300 663-1 : September 1996 subclause 3.1 1.2, third paragraph Replace the third paragraph by: On calls incoming from some non-ISDNs, the calling number may be delivered to the destination ISDN without an indication of calling line i
42、dentity restriction. In this case the network shall, depending on the indication received, either: - for “presentation allowed“, send the Calling party number information element according to the contents of subclause 3.9.2.3.1, second paragraph, and shall include the Calling patty subaddress inform
43、ation element if the calling party subaddress is available; or, for “presentation restricted“, send the Calling party number information element according to the contents of subclause 3.9.2.3.1 , fourth paragraph, and shall not include the Calling party subaddress information element. - subclause 3.
44、12 Replace subclause 3.12 and all of its subclauses by: The interaction of the CLIP supplementary service with other supplementary services shall be as specified in ETS 300 669-1 9. ETSI ETS*300*bb3- L 9b = 3400855 CIL33393 TO5 Page 7 ETS 300 663-1: September 1996 Default Complete Default number the
45、 number number SET SI=ll SET Sk01 SET SI=l 1 figure 3-VQ.2951 Replace figure 3-1/Q.2951 by: SET SI=00 Process clip user and is provided as part of the basic service. NOTE 2: This transition specifies additional processing to that described in ETS 300 443-1 4. originating-network(2) ( NULL ) O ype of
46、 numbe I SET 1 Ad * PI = O1 ; NPI = OOOO; and TON = OOO. NOTE 3: In this case: SI = 11: PI = 10: NPI = O000 and TON = OOO. Figure 3-2: Destination network side dynamic description ETSI ETS*300*663- I 96 M 3400855 0133393 888 Page 9 ETS 300 663-1 : September 1996 annex A Annex A has the status of a n
47、ormative annex. subclause A.2.1 Replace the complete text of subclause A.2.1 by: If the Calling party number information element delivered as a result of the procedures of subclause 3.9.2.1.1.3 has a screening indicator set to “user-provided, not screened“, and presentation is allowed according to t
48、he presentation indicator supplied together with the calling party number, then the network shall send a second Calling party number information element, immediately following the first Calling party number information element, containing the default number of the access of the calling user. This se
49、cond Calling party number information element shall be provided according to the procedures of subclause 3.9.2.3.1. In all other cases, only the first Calling party number information element is sent according to the procedures of subclause 3.9.2.3.1. clause A.4 Replace the complete text of clause A.4 by: I The procedures of subclause 3.9.2.1.1.2 and subclause 3.9.2.1.1.3 shall apply. appendix I Appendix I has the status of an informative annex. ETSI ETS*300*bb3- 1 96 3400855 0333394 714 E Page 10 ETS 300 663-1: September 1996 September 1995 June 1996 Septe
