ETSI EN 300 392-11-1 V1.2.1 (2004-01)
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 1: Call Identification (CI)
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 1: Call Identification (CI)
REN/TETRA-03096
Prizemni snopovni radio (TETRA) – Govor in podatki (V+D) – 11. del: Dopolnilne storitve stopnje 2 – 1. poddel: Identifikacija klica (CI)
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Prizemni snopovni radio (TETRA) – Govor in podatki (V+D) – 11. del: Dopolnilne storitve stopnje 2 – 1. poddel: Identifikacija klica (CI)Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 11: Supplementary services stage 2; Sub-part 1: Call Identification (CI)33.070.10Prizemni snopovni radio (TETRA)Terrestrial Trunked Radio (TETRA)ICS:Ta slovenski standard je istoveten z:EN 300 392-11-1 Version 1.2.1SIST EN 300 392-11-1 V1.2.1:2006en01-april-2006SIST EN 300 392-11-1 V1.2.1:2006SLOVENSKI
STANDARD
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 2
Reference REN/TETRA-03096 Keywords radio, TETRA, V+D ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE
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ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 3
Contents Intellectual Property Rights.6 Foreword.6 1 Scope.8 2 References.8 3 Definitions and abbreviations.9 3.1 Definitions.9 3.2 Abbreviations.10 4 Supplementary Service Calling Line Identification Presentation (SS-CLIP) stage 2 specification.10 4.1 Functional model.10 4.1.1 Functional model description.10 4.1.2 Description of functional entities.11 4.1.2.1 Served User CGLI Reception, FE1.11 4.1.2.2 Served User current SwMI, CGLI Presentation, FE21.11 4.1.2.3 Group Controlling SwMI, FE22.12 4.1.3 Relationship of functional model to individual call functional model.12 4.1.4 Relationship of functional model to group call functional model.13 4.2 Information flows.13 4.2.1 Definition of information flows.13 4.2.1.1 CGLI (CallinG Line Identification).14 4.2.2 Relationship of information flows to basic call information flows.14 4.2.3 Examples of information flow sequences.15 4.2.3.1 Normal operation of SS-CLIP.15 4.3 Functional entity actions.16 4.3.1 Functional entity actions of FE21.16 4.3.2 Functional entity actions of FE1.16 4.3.3 Functional entity actions of FE22.16 4.4 Allocation of functional entities to physical equipment.16 4.5 Interworking considerations.17 5 Supplementary Service Connected Line Identification Presentation (SS-COLP) stage 2 specification.17 5.1 Functional model.17 5.1.1 Functional model description.17 5.1.2 Description of functional entities.18 5.1.2.1 Served User, Calling User COLI Reception, FE1.18 5.1.2.2 Served User Current SwMI, COLI Presentation, FE21.18 5.1.2.3 Group Controlling SwMI, FE22.18 5.1.3 Relationship of functional model to basic individual call functional model.19 5.1.4 Relationship of functional model to basic group call functional model.20 5.2 Information flows.20 5.2.1 Definition of information flows.20 5.2.1.1 COLI (Connected Line Identification).21 5.2.2 Relationship of information flows to basic call information flows.21 5.2.3 Examples of information flow sequences.22 5.2.3.1 Normal operation SS-COLP in case of individual call.22 5.2.4 Normal operation SS-COLP in case of group call.23 5.2.5 Functional entity actions.23 5.2.5.1 Functional entity actions of FE1.23 5.2.5.2 Functional entity actions of FE21.23 5.2.5.3 Functional entity actions of FE22.23 5.3 Allocation of functional entities to physical equipment.24 5.4 Interworking considerations.24 6 Supplementary Service Calling Line Identification Restriction stage 2 specification.24 6.1 Functional model.24 SIST EN 300 392-11-1 V1.2.1:2006
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6.1.1 Functional model descriptions.24 6.1.1.1 Functional model description for SS-CLIR in case of Individual Call.25 6.1.1.2 Functional model description for SS-CLIR in case of Group Call.25 6.1.2 Description of functional entities.26 6.1.2.1 Restriction Request, FE1.26 6.1.2.2 Restriction Control, Group Controlling SwMI, FE22.26 6.1.3 Relationship of functional model to basic individual call SS-CLIR functional model.27 6.1.3.1 Relationship of functional model to basic group call SS-CLIR functional model.28 6.2 Information flows.28 6.2.1 Definition of information flows.28 6.2.1.1 RESTRICT.28 6.2.2 Relationship of information flows to basic call information flows.29 6.2.3 Examples of information flow sequences.29 6.2.3.1 Normal operation of SS-CLIR in case of individual call.30 6.2.3.2 Normal operation of SS-CLIR in case of Group Call.31 6.3 Functional entity actions.31 6.3.1 SS-CLIR Individual call.31 6.3.1.1 Functional entity actions of FE1.31 6.3.1.2 Functional entity actions of FE21.31 6.3.1.3 Functional entity actions of FE25.32 6.3.2 SS-CLIR Group call.32 6.3.2.1 Functional entity actions of FE1.32 6.3.2.2 Functional entity actions of FE21.32 6.3.2.3 Functional entity actions of FE22.32 6.4 Allocation of functional entities to physical equipment.32 6.5 Interworking considerations.32 7 Supplementary Service Connected Line Restriction stage 2 specification.33 7.1 Functional model.33 7.1.1 Functional model descriptions.33 7.1.1.1 Functional model description for SS-COLR in case of individual call.33 7.1.1.2 Functional model of SS-COLR in case of group call.34 7.1.2 Description of functional entities.35 7.1.2.1 Functional entities in case of SS-COLR individual call.35 7.1.2.1.1 Restriction Request, FE1.35 7.1.2.1.2 Restriction Control, FE21.35 7.1.2.2 Relationship of functional model to basic individual call COLR functional model.35 7.1.2.3 Functional entities in case of SS-COLR group call.36 7.1.2.3.1 Served User, FE1.36 7.1.2.3.2 Group controlling SwMI, FE22.36 7.1.2.3.3 Calling User, Affected user SwMI FE25.36 7.1.2.3.4 Calling User MS FE5.36 7.1.2.4 Relationship of functional model to basic group call COLR functional model.37 7.2 Information flows.37 7.2.1 Definition of information flows.37 7.2.1.1 RESTRICT.37 7.2.2 Relationship of information flows to basic call information flows.38 7.2.3 Examples of information flow sequences.38 7.2.3.1 Normal operation of SS-COLR in case of individual call.39 7.2.3.2 Normal operation of SS-COLR in case of Group Call.39 7.3 Functional entity actions.40 7.3.1 SS-COLR individual call.40 7.3.1.1 Functional entity actions of FE1.40 7.3.1.2 Functional entity actions of FE21.41 7.3.1.3 Functional entity actions of FE25.41 7.3.2 SS-COLR group call.41 7.3.2.1 Functional entity actions of FE1.41 7.3.2.2 Functional entity actions of FE22.41 7.3.2.3 Functional entity actions of FE25.41 7.3.2.4 Functional entity action of FE5.41 7.4 Allocation of functional entities to physical equipment.42 SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 5
Annex A (informative): Bibliography.43 History.44
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Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This European Standard (Telecommunications series) has been produced by ETSI Project Terrestrial Trunked Radio (TETRA). The present document had been published as ETS 300 392-11-1. During the maintenance it was converted into an EN. The present document is part 11, sub-part 1 of a multi-part deliverable covering the Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D), as identified below: EN 300 392-1: "General network design"; EN 300 392-2: "Air Interface (AI)"; EN 300 392-3: "Interworking at the Inter-System Interface (ISI)"; ETS 300 392-4: "Gateways basic operation"; EN 300 392-5: "Peripheral Equipment Interface (PEI)"; EN 300 392-7: "Security"; EN 300 392-9: "General requirements for supplementary services"; EN 300 392-10: "Supplementary services stage 1"; EN 300 392-11: "Supplementary services stage 2"; EN 300 392-11-1: "Call Identification (CI)"; ETS 300 392-11-2: "Call Report (CR)"; ETS 300 392-11-3: "Talking Party Identification (TPI)"; EN 300 392-11-4: "Call Forwarding (CF)"; ETS 300 392-11-5: "List Search Call (LSC)"; EN 300 392-11-6: "Call Authorized by Dispatcher (CAD)"; ETS 300 392-11-7: "Short Number Addressing (SNA)"; EN 300 392-11-8: "Area Selection (AS)"; ETS 300 392-11-9: "Access Priority (AP)"; EN 300 392-11-10: "Priority Call (PC)"; ETS 300 392-11-11: "Call Waiting (CW)"; EN 300 392-11-12: "Call Hold (HOLD)"; SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 7
ETS 300 392-11-13: "Call Completion to Busy Subscriber (CCBS)"; EN 300 392-11-14: "Late Entry (LE)"; ETS 300 392-11-16: "Pre-emptive Priority Call (PPC)"; EN 300 392-11-17: "Include Call (IC)"; EN 300 392-11-18: "Barring of Outgoing Calls (BOC)"; EN 300 392-11-19: "Barring of Incoming Calls (BIC)"; ETS 300 392-11-20: "Discreet Listening (DL)"; EN 300 392-11-21: "Ambience Listening (AL)"; ETS 300 392-11-22: "Dynamic Group Number Assignment (DGNA)"; ETS 300 392-11-23: "Call Completion on No Reply (CCNR)"; ETS 300 392-11-24: "Call Retention (CRT)"; EN 300 392-12: "Supplementary services stage 3"; ETS 300 392-13: "SDL model of the Air Interface (AI)"; ETS 300 392-14: "Protocol Implementation Conformance Statement (PICS) proforma specification". TS 100 392-15: "TETRA frequency bands, duplex spacing and channel numbering"; TS 100 392-16: "Network Performance Metrics"; TS 100 392-17: "TETRA V+D and DMO Release 1.1 specifications".
National transposition dates Date of adoption of this EN: 19 December 2003 Date of latest announcement of this EN (doa): 31 March 2004 Date of latest publication of new National Standard or endorsement of this EN (dop/e):
30 September 2004 Date of withdrawal of any conflicting National Standard (dow): 30 September 2004
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 8
1 Scope The present document specifies the stage 2 description of the Supplementary Services CLIP, CLIR and COLP all part of Call Identification for the Terrestrial Trunked Radio (TETRA). The term "Line" is used in the present document by extension to the air interface and to keep those supplementary service names at the Air Interface in TETRA Radio based network. Calling Line Identification Presentation (SS-CLIP) is a supplementary service which is offered to the connected user and which provides either the calling user's identity (ITSI for TETRA) in case of individual call or the calling user identity (GTSI is presented as part of the normal group call set-up) in case of group call. COnnected Line Identification Presentation (SS-COLP) is a supplementary service which is offered to the calling user and which provides the connected user's identity (connected ITSI for individual call, connected GTSI for a group call). Calling/Connected Line Identification Restriction (SS-CLIR) is a supplementary service offered to a user to restrict presentation of that user's ITSI to another user. The generic term SS-CLIR covers in fact two different supplementary services: SS-CLIR (Calling Line Identity Restriction) and SS-COLR (COnnected Line identity Restriction). Contrary to ECMA-148 [9] and in line with public ISDN, the two services have been split in the present document to improve its readability. Man-Machine Interface and charging principles are outside the present document. Supplementary service specifications are produced in three stage according to the method defined in ITU-T Recommendation I.130 [1]. The stage 2 description identifies the functional capabilities and the information flows needed to support the supplementary service as specified in its stage 1 description (see EN 300 392-10-1 [7]). The stage 2 description is followed by the stage 3 description (see EN 300 392-12-1 [8], which specifies the protocols at the air interface and at the various Inter-System Interfaces (ISI) to support the service. The present document is applicable to MS and SwMIs involved in the operation of those supplementary services. Specifications of interworking gateways to non-TETRA networks (mainly PSTN and ISDN) are outside the scope of the present document. The stage 2 descriptions for the SS-CLIP, SS-CLIR and SS-COLP are derived from ECMA-148 [9] taken as normative reference for the corresponding supplementary services for Private Integrated Services Networks (PISNs). NOTE: The stage 2 description is followed by the stage 3 description, which specifies the encoding rules for the information flows and process behaviour for the different entities in SwMI and MS. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication and/or edition number or version number) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at http://docbox.etsi.org/Reference. [1] ITU-T Recommendation I.130: "Method for the characterization of telecommunication services supported by an ISDN and network capabilities of an ISDN". [2] ETSI EN 300 171: "Private Integrated Services Network (PISN); Service description, functional capabilities and information flows; Circuit-mode 64 kbit/s bearer services [ISO/IEC 11574 (2000) modified]". SIST EN 300 392-11-1 V1.2.1:2006
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[3] ETSI EN 300 392-1: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 1: General network design". [4] ETSI EN 300 392-3-2: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 2: Additional Network Feature Individual Call (ANF-ISIIC)". [5] ETSI EN 300 392-3-3: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 3: Interworking at the Inter-System Interface (ISI); Sub-part 3: Additional Network Feature Group Call (ANF-ISIGC)". [6] ETSI EN 300 392-9: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 9: General requirements for supplementary services". [7] ETSI EN 300 392-10-1: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 10: Supplementary services stage 1; Sub-part 1: Call Identification (CI)". [8] ETSI EN 300 392-12-1: "Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D);
Part 12: Supplementary services stage 3; Sub-part 1: Call Identification (CI)". [9] Standard ECMA-148: "Private Integrated Services Network (PISN) - Specification, Functional Model and Information Flows - Identification Supplementary Services (ISSD), 3rd edition". 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply: affected user: user the identity of which is either presented (SS-COLP), received (SS-CLIP), restricted of presentation (SS-CLIR) or restricted of reception (SS-COLR) calling user identity: see EN 300 392-1 [3], clause 7.2 where ITSI and SSI are defined NOTE: When the connected user and the calling user belongs to the same home SwMI, and according to clause 8.4.1 of EN 300 392-9 [6], this identity can be given using only the SSI part of the ITSI. In all other cases, the identity will be the full ITSI. In the case of a group call, the calling user identity is the individual calling user ITSI setting up the group call. connected user: user that answers a call NOTE: The connected user is not necessarily the called user, different from ECMA-148 [9]. connected user identity: identity of the connected user for identification purposes NOTE 1: See EN 300 392-1 [3], clause 7.2 where ITSI and SSI are defined. NOTE 2: When the connected user and the calling user belongs to the same home SwMI, and according to clause 8.4.1 of EN 300 392-9 [6], this identity can be given using only the SSI part of the ITSI. In all other cases, the identity will be the full ITSI. In the case of a group call, the connected user identity is not defined presentation indicator: presentation indicator provides instructions on whether or not the provided calling line identity is allowed to be presented or not (restricted), or indicates that the number is not available screening indicator: screening indicator provides information on the source and the quality of the provided information SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 10 served user(s): Served user in the case of SS-CLIP is the connected user for an individual call and the connected users for a group call; the served user in the case of SS-COLP is the calling user NOTE: In the ECMA terminology, SS-CLIR includes the CLIR restriction of CLIP and the COLR restriction of COLP; in the present document SS-CLIR and SS-COLR are used preferably to a generic SS-CLIR term; thus in the case of SS-CLIR as applicable to the present document, the served user is the calling user and in the case of SS-COLR, the served user is the connected user 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: CC Basic service call control functional entity CCA Basic service call control functional entity agent NOTE: CC and CCA are applied as defined in EN 300 171 [2]. CGLI CallinG Line Identification (ECMA) CLI Calling Line Identification CLIP Calling Line Identification Presentation CLIR Calling Line Identification Restriction COLI COnnected Line Identification COLP COnnected Line Presentation COLR COnnected Line Restriction FE Functional Entity GTSI Group TETRA Subscriber Identity ISI Inter System Interface ITSI Individual TETRA Subscriber Identity PI Presentation Indicator req request SDL Specification and Description Language SS Supplementary Service SSI Short Subscriber Identity SwMI Switching and Management Infrastructure TETRA Terrestrial Trunked Radio 4 Supplementary Service Calling Line Identification Presentation (SS-CLIP) stage 2 specification 4.1 Functional model The functional model for TETRA SS-CLIP is different from the functional model for ECMA-148 [9] in particular with the addition of group call. Moreover, the TETRA terminology is used and the present document is in line with EN 300 392-9 [6]. 4.1.1 Functional model description The functional model shall comprise the following functional entities: • FE1 Served User CGLI (CallinG Line Identification) Reception Functional Entity; • FE21 Served User current SwMI CGLI Presentation Functional Entity; • FE22 Group Controlling SwMI Functional Entity. SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 11 The following functional relationships shall exist between these FEs: • ra between FE1 and FE21; • rb between FE21 and FE22; • rc between FE22 and FE21; • rd between FE21 and FE1. Figure 1 shows these FEs and relationships in the case of individual call while figure 2 shows these FEs and relationships in the case of group call. FE1raFE21 Figure 1: Functional model for SS-CLIP in the case of Individual Call FE22FE1FE21rarbFE21FE1rcrd Figure 2: Functional model for SS-CLIP in the case of Group Call According to stage 1 description in EN 300 392-10-1 [7], activation/deactivation of SS-CLIP is done by provision at subscription time; as a result, there is no activation/deactivation, no interrogation and/or no definition procedure; there shall be no authorized user for that SS-CLIP. 4.1.2 Description of functional entities 4.1.2.1 Served User CGLI Reception, FE1 This functional entity receives the information related to the calling user identity and delivers it either to the served/connected user in the case of an individual call or to the served/connected users in the case of a group call. 4.1.2.2 Served User current SwMI, CGLI Presentation, FE21 When an individual call is being set-up, FE21 shall determine if SS-CLIP is activated, and if so, the applicable presentation parameters (i.e. whether SS-CLIR has been invoked or not for that call). If yes, FE21 shall then invoke SS-CLIP and shall report to served user FE1 the calling user identity. In the case of interworking, the presentation of an indicator "number not available due to interworking" shall be possible. SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 12 4.1.2.3 Group Controlling SwMI, FE22 SwMI FE22, the group controlling SwMI, shall determine if SS-CLIP is activated with or without restrictions and if so shall present to all connected users in the group call the identity of the calling user (ITSI). The calling user ITSI shall be provided to the connected user(s). NOTE: The Group GTSI is always presented in a group call set-up whether or not SS-CLIP is activated or not; thus only the ITSI of the group calling user needs to be presented in the case where SS-CLIP is active. 4.1.3 Relationship of functional model to individual call functional model FE21 shall be collocated with the terminating CC in the case of individual calls. FE1 shall be collocated with each terminating CCA. Figure 3 shows an example of the relationship between the model for SS-CLIP and the model for the basic call in the case of an individual call. FE21CCCCr2FE1CCACCAr1r3Basic CallSS-CLIPCallingUserConnectedUserra Figure 3: Example relationship between models for SS-CLIP and individual call SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 13 4.1.4 Relationship of functional model to group call functional model FE21 shall be collocated either with each terminating CC for a group call. FE1 shall be collocated with each terminating CCA. Figure 4 shows an example of the relationship between the model for SS-CLIP and the model for the basic call in the case of a group call. FE22FE1CCACCCCr1r2CCCCAr2r3BasicCallSS-CLIPCalling userConnected userFE21rarbFE21FE1rcrd NOTE: FE22 and FE21 may be collocated.
Figure 4: Relationship between models for SS-CLIP and group call 4.2 Information flows 4.2.1 Definition of information flows In the tables listing the information elements in information flows, the column headed "Request" indicates which of these information elements are mandatory (M) and which are optional (O) in a request/indication information flow, and the column headed "Confirm" indicates which of these information elements are mandatory (M) and which are optional (O) in a response/confirmation information flow. SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 14 4.2.1.1 CGLI (CallinG Line Identification) CGLI is an unconfirmed information flow across ra which conveys calling line identification information either from FE21 to FE1 or from FE22 to FE1. Table 1 lists the information elements within the CGLI indication information flow. Table 1: Content of CGLI Information element Indication Presentation Indicator M Calling user ITSI C (see note 1) External Subscriber Number C
(see notes 1, 2 and 3) Screening Indicator O (see note 4) NOTE 1: Conditional upon restriction or not. NOTE 2: May be present only in the case of interworking. NOTE 3: May be accompanied by indicators (type of number, numbering) in the case of interworking, not to be presented to the MS. NOTE 4: In the case of interworking incoming calls, only one screening indicator (number not available due to interworking) needs be provided to the MS.
CGLI indication shall always be included in the information flow at ra (regardless of the invocation or not of SS-CLIR). As a minimum, the CGLI shall contain one of the following presentation indicators: - presentation of identity not restricted; - presentation of identity restricted; - calling user identity not available owing to interworking. NOTE 1: The case of SS-CLIR override is an implementation option excepted when the override is required for the proper operation of supplementary services such as SS-CAD or SS-DL. NOTE 2: In the cases where SS-CLIR is invoked and is overridden, it is recommended to inform the user who has invoked SS-CLIR that his invocation has been overridden. In addition CGLI shall contain either the calling user identity (ITSI of individual user in case of TETRA call) or the calling interworking gateway ITSI and the external subscriber number (in case of interworking) if it is available and if presentation is not restricted (or if presentation is restricted and the connected user has an override capability). In the case of interworking, the calling user identity, if present, shall be accompanied down to the terminating SwMI FE21 by the numbering plan identifier, the type of identity, and one of the following screening indicators: - user provided, verified and passed; - user provided, not screened (only occurs in certain interworking situations); - network provided. NOTE 3: The case of user provided CGLI is excluded in TETRA. 4.2.2 Relationship of information flows to basic call information flows The CGLI request/indication information flow shall be sent across ra at the same time as the basic call information flow SETUP request/indication is sent across basic call relationship r1 (terminating CC to terminating CCA). NOTE: The information content of CGLI is gained from information received in the basic call information flow SETUP request/indication received from basic call relationship r2, i.e. from the CC prior to the terminating CC. This information ultimately comes from the originating CC. SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 15 4.2.3 Examples of information flow sequences EN 300 392-12-1 [8], on SS-CLIP stage 3 description, specifies the signalling procedures in support of the information flow sequences specified in the following clauses. In addition, it specifies signalling procedures to cover other sequences arising from service specific error situations, interactions with basic call, interactions with other supplementary services, different topologies etc. In the figures, SS-CLIP information flows are represented by solid arrows and basic call information flows are represented by broken arrows. An ellipse embracing two information flows indicates that the two information flows occur together. Within a column representing an SS-CLIP functional entity, the numbers refer to functional entity actions listed in clause 4.3. 4.2.3.1 Normal operation of SS-CLIP Figure 5 shows the information flow sequence for normal operation of SS-CLIP in the case of Individual Call. Figure 6 shows the information flow sequence for normal operation of SS-CLIP in the case of Group Call. Affected OriginatingTerminatingServedUserSwMISwMIUserraFE21FE1CCACCCCr3CCAU-SETUPISI-SETUPD_SETUP ncc_setup_req with CGLInote 2 note 3211101CGLICGLIinform NOTE 1: Original ECMA-148 [9] figure where FE1 is replaced by FE21 and FE2 by FE1, where rx becomes ra 101 becomes 211 and 201 becomes 101. NOTE 2: Basic call SETUP contains the CLIP information so that no additional flow is required at the MS. NOTE 3: The only additional information flow in the ISI-SETUP is the transport of the type of number, numbering plan and screening indicator which are not received by the MS.
Figure 5: Information flow sequence normal operation of SS-CLIP in the case of individual call SIST EN 300 392-11-1 V1.2.1:2006
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 16 Served UserServed userGroupServed UserASwMIHome SwMIBrarbrdFE1FE21FE22FE1r1r2r3CCACCCCCCA D_SETUPISI-SETUPD-SETUP211 CGLI221101CGLI 222CGLI 101CGLI CGLINote 2Note 1informinformNote 3 NOTE 1: Several served users in the group obtain the CLIP from the calling user FE5, one of them served user B is assumed to be local (for this user FE21 and FE22 are collocated). NOTE 2: This figure is shown with the assumption that the group controlling SwMI is the CLIP controlling SwMI; FE21 is assumed to be collocated with FE22 on one side and separated on the other side. NOTE 3: The calling user is not represented on this figure; this figure applies to the case where only
SS-CLIP is invoked, no SS-CLIR, no override.
Figure 6: Information flow sequence normal operation of SS-CLIP in the case of Group Call 4.3 Functional entity actions The following FE actions shall occur at the points indicated in figures 5 and 6. 4.3.1 Functional entity actions of FE21 211 Receive calling user identity for transmission to FE1, taking into account any restriction on presentation of the identity and the connected user's authority to override such restriction. If the calling user identity is either not available or restricted, indicate this to FE1. 4.3.2 Functional entity actions of FE1 101 Pass any calling user identity received from FE21 to the served user. 4.3.3 Functional entity actions of FE22 221 Receive the group call set up from the calling user and indicate either locally or remotely to all users in the group the call set up with the identification of the calling user CGLI and the associated presentation indicators. 4.4 Allocation of functional entities to physical equipment The allocations of FEs to physical equipment shown in table 2 shall apply. Table 2: Scenarios for the allocation of FEs to physical equipment FE22 FE21 FE1 Group Controlling SwMI Terminating SwMI Connected User MS
ETSI ETSI EN 300 392-11-1 V1.2.1 (2004-01) 17 4.5 Interworking considerations All FEs for SS-CLIP are always located within SwMIs and MS attached to SwMIs. When SS-CLIP is invoked on behalf of a basic call terminated in another network, the basic call delivers to the served user's SwMI calling line identification information obtained from the other network. In the case of a public ISDN, the CC in the gateway SwMI uses the public ISDN's Calling Line Identification Presentation supplementary service to obtain this information. The External Subscriber Number (ESN) shall be accompanied down to the served user SwMI through ISI by the type of number, the numbering plan and the screening indicator. In the case where that screening indicator indicates "not available due to interworking", this information shall be presented to the end user. In the case where the other network is unable to provide this information, the CC at the gateway SwMI provides instead an indication that the calling user identity is not available due to interworking. Invocation of SS-CLIP by the external network is outside the scope of the present document. NOTE: As a TETRA Gateway consideration, in the case of a call incoming to TETRA, the Calling Line Identification shall always be brought to the Gateway and it will be a gateway decision to provide CLIP in a certain format to the interworking network when this network is invoking SS-CLIP in its operation. 5 Supplementary Service Connected Line Identification Presentation (SS-COLP) stage 2 specification 5.1 Functional model In order to use the TETRA terminology, to add group call and to handle cases of call forwarding not covered in ECMA-148 [9], the functional model of SS-COLP shall be different from the ECMA-148 [9] functional model. In the case where SS-COLP is invoked and where the calling user calls a group, the GTSI of the group shall be presented to the calling user. 5.1.1 Functional model description The functional model shall comprise the following functional entities: • FE1 Served User COLI Reception (Calling User) Functional Entity
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