CEPT T S 22-05 E-1989 Connected Line Identification Presentation Service《连接线路识别表示业务》.pdf

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1、CEPT T/S*22-05*E 89 2326434 0013b80 608 22-05 Page E 1 Recommendation T/S 22-05 (Edinburgh 1988) COKNECTED LISE IDENTIFICATION PRESENTATION SERVICE Recommendation proposed by Working Group T WG i I “Signalling. Protocols and Saitching“ (SPS Text of the Recommendation adopted bx the “Telecornmimicati

2、ors ComrnisJioii : “The European Conference of Post and Telecommunications Administrations. considering - the available service description on Connected Line Identification Presentation (COLP). (Stage 1 J in document - that in several CEPT member countries supplementary services will be offered whic

3、h imply that the calling party - that it is desirable to handle such calls in a standardised way. especially when these calls are crossing borders. recommends that the CEPT members recognise and use the follouing definitions. arrangements. and specifications for the Supplementary Service Connected L

4、ine Identification Presentation.“ TjSGT SF2(87)24. will be provided with the connected partys ISDN number. O 1. 2. 2.1. 2.2. 2.3. 2.4. GENERAL The supplementary service Connected Line Identification Presentation provides the ability to indicate the ISDN number of the connected line with possible add

5、itional address information to the calling party w/im the call is established. DESCRTPTION General Description This supplementary service is not a tiidling check hilt an ititiicrtion to the cdling siihscriher ?i the cuiiiiectcd line. In a full ISDN environment. the connected line identity must inclu

6、de all the information necessary to unambiguously identify the connected line: this information is generated or checked by the network. Moreover, the information on the connected line identity may include additional address information generated by the connected user and transparently transported by

7、 the netmork. The network is not responsible for the content of this additional information. The network delivers the connected line identity to the calling party regardless of the terminal capability to handle the information. Appcabiliy This supplementary service is applicable for all telecommunic

8、ation services. Terminology The controlling subscriber is the calling subscriber. Presentation Restriction Aspects of Connected Line Identification Connected Line Identification Restriction includes two options: i) Presentation Indicator stored in the public nehvork (local exchange) as a default val

9、ue for each user. The default value may be “presentation allowed“ or “presentation restricted“. This default value may be changed onlj by the network provider. ii) Presentation indicator included in the connect message received from the connected user. The first option is considered a minimum implem

10、entation. Edition of January 15, 1989 TIS 22-05 E Page 2 The second option gives the connected user a possibility on a per call basis to override the default Presentation Indicator value stored in the public network. This option may be available on subscription basis or be generally available. The s

11、ervice Connected Line Identification Restriction has impact on the service Connected Line Identifica- tion Presentation, and therefore. the rest of the description is common for the two services. This part is presented in the COLP-description. 3. DERIVATION OF A FUNCTIONAL MODEL The model used for i

12、llustrating the Connected Line Identification Services procedures is given below: USER A !SER B CALL CALL CALL CALL CALL CONTROL CTlNTROL CONTROL CONTROL CONTROL AGENT FUNCTIONS FUNCTIONS FUNCTIONS AGENT FUNCTIONS (CC) (CCI (CC) FUNCTIONS (KA) (CCA) 4. INFORMATION FLOW DIAGRAMS The original Connecte

13、d Line Identity will he delivered to the calling party by his local exchange and/or ISPBX when the call enters the active state if the Connected Line Identity is available and presentation allowed. If Connected Line Identity is not available in the originating local or transit exchange at call conne

14、ction time, the exchange may optionally request the Connected Line Identity from the destination local exchange. The specifications of functions for COLP include adaptions for private network applications (in a full privatc network environment) and mobile network applications. The Connected Line Ide

15、ntity is made up of a number of information units: - the subscribers national number (private network number in the case of a call within a private network) - international ISDN-number and possibly other indications only for international calls - partial number (optional) cNofc i, - optionally, suba

16、ddress information if explicitly provided by the connected party numbering plan identificator In addition to the Connected Line Identity the subscriber may be given the following information: - Presentation Indicator showing: (a) presentation allowed, or (b) presentation restricted, or (c) number no

17、t available due to interworking. dofe ii) - Screening Indicator showing: (a) user provided, verified and passed. or (b) network provided - type of address (Nute i,: For international calls the partial numhcr may be the intcrnutiiinul prefix und the country code. For national calls the partial number

18、 may bc thc trunk prefix und thc urca code. (Note ii): The technical solutions for the various intcrworking arrangements with dcdicatd networks have not bcw detailed in this document. Edition of January 15. 19x9 _ CEPT T/S*22-05*E 87 W 232b4L4 OOLLb82 480 W TIS 22-05 E Page 3 4.1. Information flows

19、for combined public and private configurations SETCP - U0 COhhECT LINE IDENTITI OR INDIC4TIOXS SETCP - rilrp. coni. OTE-E, - FE - LO COLI PRO DED COLI PRO DED REQ. Op71 PRO DED IN CASE OF A NATIONAL CA4LL. FE 3 IS NOT NEEDED. Edition of January 15. 1989 TIS 22-05 E Page 4 4.2. Information flows for

20、private nehvork configurations SETUP rep. conf. - I FE 3 - I- - Norc 1. * the number contains: - no information (should not be permitted for DDI-ISPBX in some network.;) - part of the subscribcr number extcnqion number. sclcction on u passive bus) subscriber number - niitional number indicators numb

21、ering plan identitication - - type of address presentation indicator Optional: subaddress Nole 2. j, the number contains: - national number if present: subaddress international number j, indicators can be: - presentation indicator (allowedirsstricted!net available due to interworking) - type of addr

22、ccs - numbering plan identification Note 3. * the number contains: - international number - if present: subaddress 3( indicators can be: - type of address screening indicator (network providcd!subscrihcr provided. verifid and pacsrrf) (tiption) no information eng. prcsrntatisn rcstriction) presentat

23、ion indicator (allawccl!restrictcdnot available duc to intcrwcirking) screening indicator (network providcdjsubscriber provided. verifid and passed) (option) numbering plan identification SETUP L _ CEPT T/S*ZE-OS*E 89 = 2326414 0011684 253 O TIS 22-05 E Page 5 Note 4. j, the number contains: - no in

24、formation (depending on indicators) - national number (for national calls) - international number (for international calls) - if present: subaddress * indicators can be: - presentation indicator (allowed restricted not available due to interworking) - screening indicator (network provided subscriber

25、 provided. verified and passed) (option) - type of address - numbering plan identification Note 5. - no information - part of the extensionnumber (e.g. selection on a passive bus) - extension number or private netviork number - optional: subaddress - type of address - numbering plan identification N

26、ote 6. * the number contains: - extension number or private network number - if present: subaddress * indicators can be: - presentation indicator (allowed restricted not available due to interworking) - screening indicator private network provided user provided. verified and passed) - type of addres

27、s - numbering plan identification the number contains: 5. SDL-DIAGRAMS FOR FLKCTIONAL ENTITIES The following functions have been specified : 5.1. FE !-05*E 89 m 232bliLLi 0011ib87 Tb;! m O /x SOL-diagram for FE3 . (part 1) t/ handi Ing “ Precontation mm be restricted due to nar,onal regulations gr p

28、recontation indicator SET Pi - I- RI. trunk prolix (if any) r-l cowtry codo - ADO 6.l fi _- N n Edition of January 15. 1989 CEPT T/S*22-05*E 9 2326414 0011b T9 O T/C 22-05 E Page 9 /Y SOL-diagram for (part 21 */ Ini t handling ADO internat. Keep SI and Pl as Drov ided ami lable I II I Edition of Jan

29、uary 15. 1989 TIS 22-05 E Page 10 Noto1 Lew SI o9 - /* SDL-dragram for FE2 a*/ ling of COL. id. Hole A cl , f -I- I h L /X Note A: No information about the COL Identity is sent to the calling party */ F Continuo handling /X Note B. will not be presented 1 I Edition OP January 15. 19RY 6. SCENARIO FL

30、XCTIONAL ENTITY FE 1 6.1. FE2 I FE 3 FE 4 FE 5 6.2. Call between NT2s Call between NT2-TE 6.3. KT2 LE ! (TR) LE I XT2 ST2 LE I TR) LE TE 6.4. 6.5. 7. O 8. CEPT T/S*22-05*E 89 2326414 OOLLb90 557 TIS 22-05 E FUNCTIONAL ENTITY ACTIONS Functional Entity Actions for FE 1 - Receive indications relating t

31、o the service from FE 3 Functional Entity Actions for FE 2 - Check if COLP subscription - Check if Connected Line Identity is provided - Request Connected Line Identity - Present the available information to the user Functional Entity Actions for FE 3 - Check if Connected Line Identity may be passed

32、 between the Administrations - At destination side: provide international significant number - At originating side: add international prefix Functional Entity Actions for FE 4 - Check if Connected Line Identity is provided from the user - Verify (and complete) Connected Line Identity - Set Presentat

33、ion Indicator and Screening Indicator - Set type of number Functional Entity Actions for FE 5 - Receive and forward terminating users service requests to FE 4 I International Cali I TE I LE I TR I LE I TE I National Private Network I TE I NT2 I - I NT2 1 TE I International Private Network I TE I NT2 I TRNT2 I NT2 I TE Nore. (TR) means that this Functional Entity is included in the case of international calls. LIST OF ABBREVIATIONS COLP: Connected Line Identification Presentation. SI: Screening Indicator. PI: Presentation Indicator. Edition of January 15. I989 Page 11