SIST ETS 300 173 E1:2005
(Main)Private Telecommunication Network (PTN); Specification, functional models and information flows; Identification supplementary services
Private Telecommunication Network (PTN); Specification, functional models and information flows; Identification supplementary services
Stages 1 & 2 for calling/connected line id pres/rest sup serv.
Zasebno telekomunikacijsko omrežje (PTN) – Specifikacija, funkcijski modeli in informacijski pretoki - Dopolnilna storitev: razpoznavanje
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Zasebno telekomunikacijsko omrežje (PTN) – Specifikacija, funkcijski modeli in informacijski pretoki - Dopolnilna storitev: razpoznavanjePrivate Telecommunication Network (PTN); Specification, functional models and information flows; Identification supplementary services33.040.35Telefonska omrežjaTelephone networksICS:Ta slovenski standard je istoveten z:ETS 300 173 Edition 1SIST ETS 300 173 E1:2005en01-maj-2005SIST ETS 300 173 E1:2005SLOVENSKI
STANDARD
EUROPEANETS 300 173TELECOMMUNICATIONDecember 1992STANDARDSource: ETSI- TC ECMAReference: ECMA-148ICS:33.080Key words:PTN, ISSD, ECMA-148Private Telecommunications NetworkSpecification, functional models and information flowsIdentification supplementary servicesETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEX.400: c=fr, a=atlas, p=etsi, s=secretariat - Internet: secretariat@etsi.frTel.: +33 92 94 42 00 - Fax: +33 93 65 47 16Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and theforegoing restriction extend to reproduction in all media.© European Telecommunications Standards Institute 1992. All rights reserved.SIST ETS 300 173 E1:2005
Page 2ETS 300 173: December 1992Whilst 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, please write to"ETSI Editing and Committee Support Dept." at the address shown on the title page.SIST ETS 300 173 E1:2005
Page 3ETS 300 173: December 1992ContentsForeword.71Scope and field of application.92Conformance.93References.94Definitions.104.1External definitions.104.2List of acronyms.105SS-CLIP Stage 1 - Service within a PTN.105.1Definition.115.2Description.115.2.1General Description.115.2.2Qualifications on Applicability to Telecommunication Services.115.3Procedures.115.3.1Provision/Withdrawal.115.3.2Normal Procedures.115.3.2.1Activation/Deactivation/Registration/Interrogation.115.3.2.2Invocation and Operation.115.3.3Exceptional Procedures.115.3.3.1Activation/Deactivation/Registration/Interrogation.115.3.3.2Invocation and Operation.125.3.4Alternative Procedures.125.3.4.1Activation/Deactivation/Registration/Interrogation.125.3.4.2Invocation and Operation.125.4Interaction with Other Supplementary Services.125.4.1Connected Line Identification Presentation.125.4.2Calling/Connected Line Identification Restriction.126SS-CLIP Stage 1 - Interworking considerations.126.1Incoming Calls.126.2Outgoing Calls.127SS-CLIP Stage 1 - Overall SDL.138SS-COLP Stage 1 - Service within a PTN.158.1Definition.158.2Description.158.2.1General Description.158.2.2Qualifications on Applicability to Telecommunication Services.158.3Procedures.158.3.1Provision/Withdrawal.158.3.2Normal Procedures.158.3.2.1Activation/Deactivation/Registration/Interrogation.158.3.2.2Invocation and Operation.158.3.3Exceptional Procedures.168.3.3.1Activation/Deactivation/Registration/Interrogation.168.3.3.2Invocation and Operation.168.3.4Alternative Procedures.168.3.4.1Activation/Deactivation/Registration/Interrogation.168.3.4.2Invocation and Operation.16SIST ETS 300 173 E1:2005
Page 4ETS 300 173: December 19928.4Interaction with Other Supplementary Services.168.4.1Calling Line Identification Presentation.168.4.2Calling/Connected Line Identification Restriction.169SS-COLP Stage 1 - Interworking considerations.169.1Outgoing Calls.169.2Incoming Calls.1710SS-COLP Stage 1 - Overall SDL.1711SS-CLIR Stage 1 - Service within a PTN.1911.1Definition.1911.2Description.1911.2.1General Description.1911.2.2Qualifications on Applicability to Telecommunication Services.1911.3Procedures.1911.3.1Provision/Withdrawal.1911.3.2Normal Procedures.1911.3.2.1Activation, Deactivation, Registration and Interrogation.1911.3.2.2Invocation and Operation.1911.3.3Exceptional Procedures.2011.3.3.1Activation/Deactivation/Registration/Interrogation.2011.3.3.2Invocation and Operation.2011.3.4Alternative Procedures.2011.3.4.1Activation/Deactivation/Registration/Interrogation.2011.3.4.2Invocation and Operation.2011.4Interaction with Other Supplementary Services.2011.4.1Calling Line Identification Presentation.2011.4.2Connected Line Identification Presentation.2012SS-CLIR Stage 1 - Interworking considerations.2012.1Incoming Calls.2012.2Outgoing Calls.2113SS-CLIR Stage 1 - Overall SDL.2114SS-CLIP Stage 2 - Functional model.2214.1Functional Model Description.2214.2Description of Functional Entities.2214.2.1CGLI Presentation Functional Entity, FE1.2214.2.2CGLI Reception Functional Entity, FE2.2214.3Relationship of Functional Model to Basic Call Functional Model.2215SS-CLIP Stage 2 - Information flows.2215.1Information Flows across Relationship rx.2215.1.1CGLI (Calling Line Identification).2315.1.1.1Meaning of CGLI.2315.1.1.2Information Content of CGLI.2315.2Relationship of Information Flows to Basic Call Information Flows.2315.3Example of Information Flow Sequences.2315.3.1Normal Operation of SS-CLIP.2416SS-CLIP Stage 2 - Functional entity actions.2416.1Functional entity actions of FE1.2416.2Functional entity actions of FE2.2417SS-CLIP Stage 2 - Functional entity behaviour.2418SS-CLIP Stage 2 - Allocation of Functional Entities to Physical Locations.26SIST ETS 300 173 E1:2005
Page 5ETS 300 173: December 199219SS-CLIP Stage 2 - Interworking considerations.2620SS-COLP Stage 2 - Functional model.2620.1Functional Model Description.2620.2Description of Functional Entities.2720.2.1COLI Presentation Functional Entity, FE1.2720.2.2COLI Reception Functional Entity, FE2.2720.3Relationship of Functional Model to Basic Call Functional Model.2721SS-COLP Stage 2 - Information flows.2721.1Information Flows across Relationship rx.2721.1.1COLI (Connected Line Identification).2721.1.1.1Meaning of COLI.2721.1.1.2Information Content of COLI.2721.2Relationship of Information Flows to Basic Call Information Flows.2821.3Example of Information Flow Sequences.2821.3.1Normal Operation of SS-COLP.2822SS-COLP Stage 2 - Functional entity actions.2922.1Functional entity actions of FE1.2922.2Functional entity actions of FE2.2923SS-COLP Stage 2 - Functional entity behaviour.2924SS-COLP Stage 2 - Allocation of Functional Entities to Physical Locations.3125SS-COLP Stage 2 - Interworking considerations.3126SS-CLIR Stage 2 - Functional model.3126.1Functional Model Description.3126.2Description of Functional Entities.3226.2.1Restriction Request Functional Entity, FE1.3226.2.2Restriction Control Functional Entity, FE2.3226.3Relationship of Functional Model to Basic Call Functional Model.3227SS-CLIR Stage 2 - Information flows.3227.1Information Flows across Relationship rx.3327.1.1RESTRICT.3327.1.1.1Meaning of RESTRICT.3327.1.1.2Information Content of RESTRICT.3327.2Relationship of Information Flows to Basic Call Information Flows.3327.3Example of Information Flow Sequences.3327.3.1Normal Operation of SS-CLIR.3328SS-CLIR Stage 2 - Functional entity actions.3428.1Functional entity actions of FE1.3428.2Functional entity actions of FE2.3429SS-CLIR Stage 2 - Functional entity behaviour.3430SS-CLIR Stage 2 - Allocation of Functional Entities to Physical Locations.3631SS-CLIR Stage 2 - Interworking Considerations.36Annex A (Informative):Relationship to corresponding standards for the public ISDN.37History.38SIST ETS 300 173 E1:2005
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Page 7ETS 300 173: December 1992ForewordThis European Telecommunication Standard (ETS) has been produced by the European ComputerManufacturers Association (ECMA) on behalf of its members and those of the EuropeanTelecommunications Standards Institute (ETSI).This ETS is one of a series of standards defining services and signalling protocols applicable to PrivateTelecommunication Networks (PTN) incorporating one or more interconnected nodes. The series uses theISDN concepts as developed by CCITT and is also within the framework of standards ETSs open systemsinterconnection as defined by ISO.This particular ETS specifies the Calling Line Identification Presentation, Connected Line IdentificationPresentation and Calling/Connected Line Identification Restriction supplementary services.The services specified are compatible with the equivalent services specified for public ISDNs. CCITTspecifications of these services are to be found in CCITT Recommendation I.251 (parts C, D, E and F)(Stage 1) and CCITT Recommendation Q.81 (Stage 2). ETSI specifications of these services are to befound in ETSs 300 089, 300 090, 300 091, 300 094, 300 095 and 300 096. Annex A describes therelationship between this ETS and the corresponding ETSs for the public ISDN.This ETS was produced by ECMA using the ECMA guidelines for the production of ETSs and using theECMA stylesheet. In order to avoid undue delays in the publication of this ETS it has been agreed that thisETS will not be converted to the ETSI stylesheet.SIST ETS 300 173 E1:2005
Page 8ETS 300 173: December 1992Blank PageSIST ETS 300 173 E1:2005
Page 9ETS 300 173: December 19921Scope and field of applicationThis European Telecommunication Standard (ETS) specifies the following Identification SupplementaryServices: Calling Line Identification Presentation (SS-CLIP), Connected Line Identification Presentation(SS-COLP) and Calling/Connected Line Identification Restriction (SS-CLIR), which are applicable tovarious basic services supported by Private Telecommunication Network (PTN). Basic services arespecified in ETS 300 171.Service specifications are produced in three Stages, according to the method described in ENV 41005.This standard contains the Stage 1 and Stage 2 specifications of the Identification SupplementaryServices. The Stage 1 specifications (clauses 5 to 13) specify the supplementary services as seen byusers of PTNs. The Stage 2 specifications (clauses 14 to 28) identify the functional entities involved in thesupplementary services and the information flows between them.2ConformanceDefinition of signalling protocol at stage 3 is guided and constrained by the Stage 1 and Stage 2specifications . A Stage 3 standard shall be in conformance with this standard if the signalling protocolsand equipment behaviour specified in the Stage 3 standard are capable of being used in a PTN whichsupports the supplementary services specified in this standard.A Stage 3 standard for SS-CLIP shall be in conformance with this standard if it is adequate for the supportof those aspects of the normative clauses for Stage 1 and Stage 2 of SS-CLIP which are relevant to theinterface or equipment to which the Stage 3 standard applies. The normative clauses for Stage 1 andStage 2 of SS-CLIP are 5, 6, 14, 15, 16, 18.1 and 18.3. Clauses 7, 17, 18.2 and 19 are informative.A Stage 3 standard for SS-COLP shall be in conformance with this standard if it is adequate for thesupport of those aspects of the normative clauses for Stage 1 and Stage 2 of SS-COLP which arerelevant to the interface or equipment to which the Stage 3 standard applies. The normative clauses forStage 1 and Stage 2 of SS-COLP are 8, 9, 20, 21, 22, 24.1 and 24.3. Clauses 10, 23, 24.2 and 25 areinformative.A Stage 3 standard for SS-CLIR shall be in conformance with this standard if it is adequate for the supportof those aspects of the normative clauses for Stage 1 and Stage 2 of SS-CLIR which are relevant to theinterface or equipment to which the Stage 3 standard applies. The normative clauses for Stage 1 andStage 2 of SS-CLIR are 11, 12, 26, 27, 28, 30.1 and 30.3. Clauses 13, 29, 30.2 and 31 are informative.3ReferencesENV 41005 (1990)Method for the Specification of Basic and Supplementary Services ofPrivate Telecommunication Networks.ETS 300 171Private Telecommunication Network (PTN); Specification, functional Modeland information flows, Control aspects of circuit mode basic services.ENV 41007-1 (1991)Definition of Terms in private telecommunication networks, Part 1:Definition of general terms.CCITT Recommendation I.112Vocabulary of Terms for ISDNs.ETS 300 189Private Telecommunication Network (PTN); Addressing.SIST ETS 300 173 E1:2005
Page 10ETS 300 173: December 19924DefinitionsFor the purpose of this standard, the following definitions shall apply:4.1External definitionsThis standard uses the following terms defined in other documents:Basic ServiceCCITT Recommendation 1.210ConnectionENV 41007-1PrivateENV 41007-1Private Telecommunication Network ExchangeENV 41007-1PublicENV 41007-1Public ISDNENV 41007-1PTN NumberETS 300 189ServiceCCITT Recommendation 1.112Supplementary ServiceCCITT Recommendation 1.210Signalling Telecommunications NetworkENV 41007-1Terminal, Terminal EquipmentENV 41007-1UserETS 300 1714.2List of acronymsCCCall Control (functional entity)CCACall Control Agent (functional entity)CGLICalling Line Identification (functional entity)CNConnected NumberCOLIConnected Line Identification (functional entity)CSConnected SubaddressFEFunctional EntityISDNIntegrated Services Digital NetworkONOriginating NumberOSOriginating SubaddressPTNPrivate Telecommunication NetworkPTNXPrivate Telecommunication Network ExchangeRIRestriction IndicatorSS-CLIPSupplementary Service Calling Line Identification PresentationSS-CLIRSupplementary Service Calling/Connected Line Identification RestrictionSS-COLPSupplementary Service Connected Line Identification PresentationTETerminal Equipment5SS-CLIP Stage 1 - Service within a PTNA Stage 3 standard for SS-CLIP shall be capable of supporting the service specified in this clause,including the various interactions with other supplementary services.SIST ETS 300 173 E1:2005
Page 11ETS 300 173: December 19925.1DefinitionCalling Line Identification Presentation (SS-CLIP) is a supplementary service which is offered to the calledparty and which provides the calling party's PTN number, and possibly a subaddress, to the called party.5.2Description5.2.1General DescriptionThe PTN provides the called party with the number of the calling party whenever an incoming call ispresented. The number provided should be sufficient to enable the called party to return the call.The calling party number may be accompanied by a subaddress.5.2.2Qualifications on Applicability to Telecommunication ServicesThis supplementary service is applicable to all basic telecommunication services.5.3Procedures5.3.1Provision/WithdrawalSS-CLIP shall be generally available. There is no need for service profile control.Some PTN users may have a service profile which permits the override of calling line identificationrestriction.5.3.2Normal Procedures5.3.2.1Activation/Deactivation/Registration/InterrogationSS-CLIP shall be permanently activated. No information needs to be registered with the PTN for thissupplementary service, and therefore interrogation is not applicable.5.3.2.2Invocation and OperationThe PTN provides the called party with the calling party number at the same time as indicating an incomingcall.The number presented is accompanied by indications of the numbering plan and type of number, andshould be sufficient to unambiguously identify the calling party.Where the number presented has been wholly or partially provided by the calling party, it is marked "userprovided, verified and passed". Otherwise it is marked "network-provided".If the calling party has also provided a calling party subaddress, it is delivered to the called party alongwith the calling party number.5.3.3Exceptional Procedures5.3.3.1Activation/Deactivation/Registration/InterrogationNot applicable.SIST ETS 300 173 E1:2005
Page 12ETS 300 173: December 19925.3.3.2Invocation and OperationThere are two exceptions when the calling party number is not presented to the called party:-when calling line identification restriction has been invoked (see definition of Calling/Connected LineIdentification Restriction), and-when the calling party number is not available, e.g., due to interworking with the analogue telephonenetwork (PSTN).In such cases the called party receives an indication of the situation.5.3.4Alternative Procedures5.3.4.1Activation/Deactivation/Registration/InterrogationNot applicable.5.3.4.2Invocation and OperationIn some cases where calling line identification restriction has been invoked, there may be certaincategories of called party that have the service profile to override this restriction and have the calling partynumber presented, e.g., emergency stations, PTN operators. In these circumstances, presentationincludes an indication that restriction has been invoked.5.4Interaction with Other Supplementary ServicesInteractions with other supplementary services for which PTN standards were available at the time ofpublication of this standard are described below.5.4.1Connected Line Identification PresentationNo interactions.5.4.2Calling/Connected Line Identification RestrictionThe calling party number is not presented if calling line identification restriction has been invoked at thecalling party, unless the called party has the service profile to override this restriction.6SS-CLIP Stage 1 - Interworking considerationsA Stage 3 standard for SS-CLIP shall be adequate for supporting the interworking considerations specifiedin this clause.6.1Incoming CallsOn calls incoming from another network, the calling party number, and subaddress if available, areobtained from the other network. In some circumstances the number may be marked "user provided,notscreened".Where no number is provided by the other network, the called PTN user is given an indication "numberunavailable due to interworking" or "presentation restricted", as appropriate.6.2Outgoing CallsThis PTN supplementary service does not apply to outgoing calls.NOTE 1:The possible provision of the calling party number and/or subaddress to anothernetwork is part of the basic call, see ETS 300 171.SIST ETS 300 173 E1:2005
Page 13ETS 300 173: December 19927SS-CLIP Stage 1 - Overall SDLFigure 1 contains the dynamic description in SDL format. The SDL process represents the behaviour of thenetwork in providing SS-CLIP. The relationship of this process to the basic call process is indicated in theannotations.Output signals to the right represent primitives to the called PTN user. Input signals from the left representinternal stimuli.SIST ETS 300 173 E1:2005
Page 14ETS 300 173: December 1992IDLECOLP requiredInclude connected lineidentification restrictionindicator in COLP_indicationto calling PTN userpresentationof connected numberrestrictedCallingPTN user hasoverride serviceprofileInclude connected partynumber, if available,and indicators in COLP_indication to calling userInclude connected partysubadress, if available,in COLP_indication tocalling userCOLP_indicationIDLENYYNdo not include connected party number in COLP_indication to calling userCOLP is invoked at thesame time as the basic callSETUP_confirmation is sentto the calling PTN userFigure 1 - SS-CLIP Overall SDLSIST ETS 300 173 E1:2005
Page 15ETS 300 173: December 19928SS-COLP Stage 1 - Service within a PTNA Stage 3 standard for SS-COLP shall be capable of supporting the service specified in this clause,including the various interactions with other supplementary services.8.1DefinitionConnected Line Identification Presentation (SS-COLP) is a supplementary service which is offered to thecalling party and which provides the called (connected) party's PTN number, and possibly a subaddress, tothe calling party.8.2Description8.2.1General DescriptionThe PTN provides the calling party with the number of the called party when the called party connects tothe incoming call (connected party identification). The number provided should be sufficient to enable thecalling party to repeat the call.NOTE 2:The number provided is the number of the connected party. Interactions with certainsupplementary services may cause the connected party number to differ from thecalled party number requested by the calling party.The connected party number may be accompanied by a subaddress.8.2.2Qualifications on Applicability to Telecommunication ServicesThis supplementary service is applicable to all basic telecommunication services.8.3Procedures8.3.1Provision/WithdrawalSS-COLP shall be generally available. There is no need for service profile control.Some PTN users may have a service profile which permits the override of connected line identificationrestriction.8.3.2Normal Procedures8.3.2.1Activation/Deactivation/Registration/InterrogationSS-COLP shall be permanently activated. No information needs to be registered with the PTN for thissupplementary service, and therefore interrogation is not applicable.8.3.2.2Invocation and OperationThe calling party, when notified that call establishment is complete, is presented with the connected partynumber.The number presented is accompanied by indications of the numbering plan and type of number, andshould be sufficient to unambiguously identify the connected party.Where the number presented has been wholly or partially provided by the connected party, it is marked"user provided, verified and passed". Otherwise it is marked "network-provided".If the connected party has provided a connected party subaddress, it is delivered to the calling party alongwith the connected party number.SIST ETS 300 173 E1:2005
Page 16ETS 300 173: December 19928.3.3Exceptional Procedures8.3.3.1Activation/Deactivation/Registration/InterrogationNot applicable.8.3.3.2Invocation and OperationThere are two exceptions when the connected party number is not presented to the calling party:-when connected line identification restriction has been invoked (see definition of Calling/ConnectedLine Identification Restriction), and-when the connected party number is not available, e.g., due to interworking with the analoguetelephone network (PSTN).In such cases the calling party receives an indication of the situation.8.3.4Alternative Procedures8.3.4.1Activation/Deactivation/Registration/InterrogationNot applicable.8.3.4.2Invocation and OperationIn some cases where connected line identification restriction has been invoked, there may be certaincategories of calling party that have the service profile to override this restriction and have the connectedparty number presented, e.g., emergency stations, PTN operators. In these circumstances, presentationincludes an indication that restriction has been invoked.8.4Interaction with Other Supplementary ServicesInteractions with other supplementary services for which PTN standards were available at the time ofpublication of this standard are described below.8.4.1Calling Line Identification PresentationNo interactions.8.4.2Calling/Connected Line Identification RestrictionThe connected party number is not presented if connected line identification restriction has been invoked atthe connected party unless the calling party has the service profile to override this restriction.9SS-COLP Stage 1 - Interworking considerationsA Stage 3 standard for SS-COLP shall be adequate for supporting the interworking considerationsspecified in this clause.9.1Outgoing CallsOn calls outgoing to another network, the connected party number, and subaddress if available, areobtained from the other network. In some circumstances the number may be marked "user-provided,unscreened".Where no number is provided by the other network, the calling PTN user is given an indication "numberunavailable due to interworking" or "presentation restricted", as appropriate.SIST ETS 300 173 E1:2005
Page 17ETS 300 173: December 19929.2Incoming CallsThis PTN supplementary service does not apply to incoming calls.NOTE 3The possible provision of the connected party number and/or subaddress to anothernetwork is part of the basic call, see ETS 300 171.10SS-COLP Stage 1 - Overall SDLFigure 2 contains the dynamic description in SDL format. The SDL process represents the behaviour of thenetwork in providing SS-COLP. The relationship of this process to the basic call process is indicated in theannotations.Output signals to the left represent primitives to the calling PTN user. Input signals from the right representinternal stimuli.SIST ETS 300 173 E1:2005
Page 18ETS 300 173: December 1992IDLECOLP requiredInclude connected lineidentification restrictionindicator in COLP_indicationto calling PTN userpresentationof connected numberrestrictedCallingPTN user hasoverride serviceprofileInclude connected partynumber, if available,and indicators in COLP_indication to calling userInclude connected partysubadress, if available,in COLP_indication tocalling userCOLP_indicationIDLENYYNdo not include connected party number in COLP_indication to calling userCOLP is invoked at thesame time as the basic callSETUP_confirmation is sentto the calling PTN userFigure 2 - SS-COLP Overall SDLSIST ETS 300 173 E1:2005
Page 19ETS 300 173: December 199211SS-CLIR Stage 1 - Service within a PTNA Stage 3 standard for SS-CLIR shall be capable of supporting the service specified in this clause,including the various interactions with other supplementary services.11.1DefinitionCalling/connected Line Identification Restriction (SS-CLIR) is a supplementary service offered to a party torestrict presentation of that party's PTN number to another party.11.2Description11.2.1General DescriptionWhen SS-CLIR applies to a party, the party's number is not normally presented to any other party.11.2.2Qualifications on Applicability to Telecommunication ServicesThis supplementary service is applicable to all basic services.11.3Procedures11.3.1Provision/WithdrawalSS-CLIR is provided on a service profile basis. A PTN may provide one or more of several service profileoptions. The options apply separately to each PTN number. Service profile options are summarised intable 1.Table 1 - Service Profile OptionsService Profile Option ValuesSS-CLIR mode permanent (invoked for all calls) temporary (specified by user per call)Default (only for presentation restrictedtemporary mode) presentation not restricted11.3.2Normal Procedures11.3.2.1Activation, Deactivation, Registration and InterrogationThe service is activated on provision and deactivated on withdrawal. This supplementary service requiresno registration, and admits no interrogation.11.3.2.2Invocation and OperationIf permanent mode is provided, restriction is invoked automatically for all calls originating or terminating atthe PTN user concerned. If temporary mode with default "presentation restricted" is provided, restriction isinvoked automatically for all calls originating or terminating at the PTN user concerned, unless requestedotherwise by the PTN user at call establishment time. If temporary mode with default "presentation notrestricted" is provided, restriction is not invoked for any call originating or terminating at the PTN userconcerned, unless requested otherwise by the PTN user at call establishment time.To override the default for an outgoing call when temporary mode is provided, the calling party makes arequest for restriction or no restriction at the same time as requesting call establishment. To override thedefault for an incoming call when temporary mode is provided, the called party makes a request forrestriction or no restriction at the same time as responding to the incoming call indication.SIST ETS 300 173 E1:2005
Page 20ETS 300 173: December 1992If restriction is invoked for an outgoing call, the calling party number is marked by the network as"presentation restricted". This prevents presentation to the called party (unless the called party has anoverride service profile).If restriction is invoked for an incoming call, the connected party number is marked by the network as"presentation restricted". This prevents presentation to the calling party (unless the calling party has anoverride service profile).11.3.3Exceptional Procedures11.3.3.1Activation/Deactivation/Registration/InterrogationNot applicable.11.3.3.2Invocation and OperationA request from the PTN user for the override of a default is ignored if the PTN user is not provided withtemporary mode.11.3.4Alternative Procedures11.3.4.1Activation/Deactivation/Registration/InterrogationNo alternative procedures.11.3.4.2Invocation and OperationNo alternative procedures.11.4Interaction with Other Supplementary ServicesInteractions with other supplementary services for which PTN standards were available at the time ofpublication of this standard are described below.11.4.1Calling Line Identification PresentationThe invocation of restriction by or on behalf of the calling party will prevent the calling party number beingpresented to the called party.The only occasion when restriction can be overridden is when the called PTN user has an override serviceprofile. Provision of this service profile is a PTN option.11.4.2Connected Line Identification PresentationThe invocation of restriction by or on behalf of the called party will prevent the connected party numberbeing presented to the calling party.The only occasion when restriction can be overridden is when the calling PTN user has an override serviceprofile. Provision of this service profile is a PTN option.12SS-CLIR Stage 1 - Interworking considerationsA Stage 3 standard for SS-CLIR shall be adequate for supporting the interworking considerations specifiedin this clause.12.1Incoming CallsThis PTN supplementary service does not apply to the calling party of an incoming call. The other networkmay provide the equivalent service, in which case the PTN may receive an indication that presentation ofthe calling party number is restricted. In such a situation the other network may or may not supply theSIST ETS 300 173 E1:2005
Page 21ETS 300 173: December 1992calling party number to the PTN. If not provided, even a called PTN user with an override service profile willbe given only an indication that presentation is restricted.If the called (connected) party has invoked restriction, the connected party number is marked as"presentation restricted". This indication is passed on to the other network.12.2Outgoing CallsThis PTN supplementary service does not apply to the connected party of an outgoing call. The publicISDN may provide the equivalent service, in which case the PTN may receive an indication thatpresentation of the connected party number is restricted. In such a situation the other network may or maynot supply the connected party number to the PTN. If not provided, even a calling PTN user with anoverride service profile will be given only an indication that presentation is restricted.If the calling party has invoked restriction, the calling party number is marked as "presentation restricted".This indication is passed on to the other network.13SS-CLIR Stage 1 - Overall SDLFigure 3 contains the dynamic description in SDL format. The SDL process represents the behaviour of thenetwork in providing SS-CLIR.Input signals from the left represent primitives from the served PTN user, input signals from the rightrepresent internal stimuli.IDLECLIR_requestrestriction onCLIR_requestrestriction offget restriction
defaulttemporarymode providedreceived in conjunctionwtih basic callSETUP_request orSETUP_response temporarymode providedreceived in conjunctionwtih basic callSETUP_request orSETUP_response generated when noexplicit request forCLIR is received inconjunction withbasic callPTNuser hasrestriction service profiletemporarymode provideddefaultrestriction onrestriction onfor this callrestriction offfor this callIDLENNNNNYYYYYFigure 3 - SS-CLIR Overall SDLSIST ETS 300 173 E1:2005
Page 22ETS 300 173: December 199214SS-CLIP Stage 2 - Functional model14.1Functional Model DescriptionThe functional model comprises the FEs "CGLI Presentation" (FE1) and "CGLI Reception" (FE2). Arelationship, rx, exists between FE1 and FE2. See figure 4.
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Called PartyCalled PartyFigure 5 - Relationship between models for SS-CLIP and Basic Call15SS-CLIP Stage 2 - Information flowsA Stage 3 standard for SS-CLIP shall be capable of supporting the information flows specified in thisclause.15.1Information Flows across Relationship rxThe following information flows are required across relationship rx.SIST ETS 300 173 E1:2005
Page 23ETS 300 173: December 199215.1.1CGLI (Calling Line Identification)15.1.1.1Meaning of CGLICGLI is an unacknowledged information flow which conveys calling line identification information from FE1(CGLI Presentation) to FE2 (CGLI Reception).15.1.1.2Information Content of CGLITable 2 lists the service elements within the CGLI information flow. The column headed "Request"indicates which of these service elements are mandatory (M) and which are optional (O) in a CGLIrequest/indication information flow. Because the information flow is unconfirmed, there is noresponse/confirmation information flow.Table 2 - Content of CGLIService ElementRequestOriginating Number (ON)MOriginating Subaddress (OS)OService element ON is always included in the CGLI request/indication information flow at rx. As a minimumit contains one of the following presentation indicators:-presentation of number not restricted;-presentation of number restricted;-originating number not available owing to interworking.In addition ON contains the calling party number if it is available and if presentation is not restricted (or ifpresentation is restricted and the called party has an override service profile). The calling party number, ifpresent, is accompanied by the numbering plan identifier, the type of number, and one of the followingscreening indicators:-network provided;-user provided, verified and passed;-user provided, not screened (only occurs in certain interworking situations).Service element OS is included in the CGLI request/indication information flow at rx only if the originationsubaddress is available.15.2Relationship of Information Flows to Basic Call Information FlowsThe CGLI request/indication information flow is sent across rx at the same time as the basic callinformation flow SETUP request/indication is sent across basic call relationship r1 (d
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