ETSI ETS 300 392-10-4 ed.1 (1996-04)
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 4: Call diversion
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 4: Call diversion
DE/TETRA-00001-10-04
Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 10. del: Dopolnilne storitve stopnje 1 - 4. poglavje: Izsmeritev klica
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) - 10. del: Dopolnilne storitve stopnje 1 - 4. poglavje: Izsmeritev klicaTerrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary services stage 1; Sub-part 4: Call diversion33.070.10Prizemni snopovni radio (TETRA)Terrestrial Trunked Radio (TETRA)ICS:Ta slovenski standard je istoveten z:ETS 300 392-10-4 E13SIST ETS 300 392-10-4:1999en01-MXOLM-19993SIST ETS 300 392-10-4:1999SLOVENSKI
STANDARD
EUROPEANETS 300 392-10-04TELECOMMUNICATIONApril 1996STANDARDSource: ETSI TC-RESReference: DE/RES-06001-10-04ICS:33.020, 33.060.50Key words:TETRA, V+DRadio Equipment and Systems (RES);Trans-European Trunked Radio (TETRA);Voice plus Data (V+D);Part 10: Supplementary services stage 1;Part 10-04: Call diversionETSIEuropean 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 1996. All rights reserved.SIST ETS 300 392-10-4:1999
Page 2ETS 300 392-10-04: April 1996Whilst 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 300 392-10-4:1999
Page 3ETS 300 392-10-04: April 1996ContentsForeword.51Scope.72Normative references.73Definitions and abbreviations.73.1Definitions.73.2Abbreviations.73.2.1General abbreviations.73.2.2Supplementary service abbreviations.84Delta stage 1 descriptions.84.1Document ECMA-CFSD (1992).84.2Delta CFU supplementary service.84.3Delta CFB supplementary service.114.4Delta CFNRy supplementary service.134.5Delta CFNRc supplementary service.15History.19SIST ETS 300 392-10-4:1999
Page 4ETS 300 392-10-04: April 1996Blank pageSIST ETS 300 392-10-4:1999
Page 5ETS 300 392-10-04: April 1996ForewordThis European Telecommunication Standard (ETS) has been produced by the Radio Equipment andSystems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).This ETS is a multi-part standard and will consist of the following parts:Part 1:"General network design".Part 2:"Air Interface (AI)".Part 3:"Inter-working", (DE/RES-06001-3).Part 4:"Gateways", (DE/RES-06001-4).Part 5:"Terminal equipment interface", (DE/RES-06001-5).Part 6:"Line connected stations", (DE/RES-06001-6).Part 7:"Security".Part 8:"Management services", (DE/RES-06001-8).Part 9:"Performance objectives", (DE/RES-06001-9).Part 10:"Supplementary services stage 1".Part 11:"Supplementary services stage 2", (DE/RES-06001-11).Part 12:"Supplementary services stage 3", (DE/RES-06001-12).Part 13:"SDL Model of the Air Interface", (DE/RES-06001-13).Part 14:"PICS Proforma", (DE/RES-06001-14).Part 15:"Inter-working - Extended Operations", (DE/RES-06001-15).Part 16:"Gateways for Supplementary Services", (DE/RES-06001-16).Transposition datesDate of adoption of this ETS:1 March 1996Date of latest announcement of this ETS (doa):31 July 1996Date of latest publication of new National Standardor endorsement of this ETS (dop/e):31 January 1997Date of withdrawal of any conflicting National Standard (dow):31 January 1997SIST ETS 300 392-10-4:1999
Page 6ETS 300 392-10-04: April 1996Blank pageSIST ETS 300 392-10-4:1999
Page 7ETS 300 392-10-04: April 19961ScopeThis European Telecommunication Standard (ETS) is a delta document detailing the deviations of theTrans-European Trunked Radio (TETRA) Call Forwarding Unconditional (CFU), Call Forwarding Busy(CFB) Call Forwarding No Reply (CFNRy) and Call Forwarding Not Reachable (CFNRc) supplementaryservices from the ECMA standard stage 1, ECMA-CFSD [1].In the case of CFNRc, the deviations shall refer to the ECMA CFNR description. In addition thissupplementary service is considered to be applicable only to mobile subscribers, as a line station isalways considered as reachable.This ETS applies to individual TETRA teleservices and bearer services only. Only SS-CFU is applicable togroup calls.2Normative referencesThis ETS incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the publications are listedhereafter. For dated references, subsequent amendments to or revisions of any of these publicationsapply to this ETS only when incorporated in it by amendment or revision. For undated references the latestedition of the publication referred to applies.[1]ECMA-CFSD (1992):"Specification, Functional Model and Information Flowsfor Diversion Supplementary Services" (ref. ECMA/TC32-TG6/92/34, Fifth (finalDraft).3Definitions and abbreviations3.1DefinitionsFor the purposes of this ETS, the following definitions apply:bearer service: A type of telecommunication service that provides the capability for the transmission ofsignals between user-network interfaces.Supplementary Service (SS): A supplementary service modifies or supplements a bearer service or ateleservice. A supplementary service cannot be offered to a customer as a stand alone service. It shouldbe offered in combination with a bearer service or a teleservice.Switching and Management Infrastructure (SwMI): All of the TETRA equipment for a Voice plus Data(V+D) network except for subscriber terminals. The SwMI enables subscriber terminals to communicatewith each other via the SwMI.teleservice: A type of telecommunications service that provides the complete capability, includingterminal equipment functions, for communication between users according to agreed protocols.3.2Abbreviations3.2.1General abbreviationsFor the purposes of this ETS, the following general abbreviations apply:PTNPrivate Telephone NetworkSDL(Functional) Specification and Description LanguageSSSupplementary ServiceNOTE:The abbreviation SS is only used when referring to a specific supplementary service.SwMISwitching and Management InfrastructureTETRATrans-European Trunked RAdioV+DVoice Plus DataSIST ETS 300 392-10-4:1999
Page 8ETS 300 392-10-04: April 19963.2.2Supplementary service abbreviationsFor the purpose of this ETS, the following supplementary service abbreviations apply:CFBCall Forwarding on BusyCFNRyCall Forwarding on No ReplyCFNRcCall Forwarding on Not ReachableCFUCall Forwarding UnconditionalCRCall ReportCTCall TransferCWCall WaitingDLDiscreet ListeningPPCPre-emptive Priority CallPRPath Replacement4Delta stage 1 descriptions4.1Document ECMA-CFSD (1992)Clause 1 shall apply. The first paragraph shall contain reference to Call Forwarding on Not Reachable(CFNRc). All references to Private Telecommunications Networks (PTNs) shall be replaced by "SwMIs".Clause 2 shall not apply.Clause 3 shall apply.Clause 4 shall apply with the following amendments:Subclause 4.9The parameter shall also contain "CFNRy and CFNRc";Subclause 4.11The supplementary service "call deflection" is not supported by TETRA.All references to Private Telecommunications Networks (PTNs) shall be replaced by "SwMIs".The supplementary service abbreviation CFNR shall be replaced with CFNRy.4.2Delta CFU supplementary serviceClause 5 shall apply with the following amendments:The supplementary service abbreviation CFNR shall be replaced with CFNRy;The clause shall contain "SS-CFNRc - Call Forwarding Not Reachable".Clause 6 shall apply with the following amendments and additions:Subclause 6.1.2The sentence shall be replaced by the following: "This supplementary serviceshall be applicable to all individual telecommunication services";Subclause 6.2.1Table 1, the transmission of names shall not be supported by TETRA.SIST ETS 300 392-10-4:1999
Page 9ETS 300 392-10-04: April 1996Subclause 6.2.2.1.1The following text shall be added:"TETRA shall not support sub-addressing:-only one terminal can use a single TETRA number at any one time;-only one compatible terminal shall be applicable for the basic service."Subclause 6.3.4The supplementary service calling name identification presentation shall not besupported by TETRA.Subclause 6.3.5The supplementary service connected name identification presentation shall notbe supported by TETRA.Subclause 6.3.6The supplementary service calling/connected name identification restriction shallnot be supported by TETRA.Subclause 6.3.9The Call Transfer (CT) supplementary service shall not be supported by TETRA.Subclause 6.3.12The supplementary service Path Replacement (PR) shall not be supported byTETRA.The following clauses shall be added:Subclause 6.3.13Call forwarding not reachableThe invocation of CFU shall take precedence over CFNRc.Subclause 6.3.14Call reportIf the call to user B is diverted to user C, then an SS-Call report (CR) invocation from user A shall beapplied to the diverted-to user C.Subclause 6.3.15Talking party identificationCall diversion shall not have any interaction with talking party identification.Subclause 6.3.16List search callCall diversion shall not have any interaction with list search call.Subclause 6.3.17Call authorized by dispatcherCall diversion shall not have any interaction with call authorized by dispatcher.Subclause 6.3.18Short number addressingCall diversion shall not have any interaction with short number addressing.Subclause 6.3.19Area selectionCall diversion shall not have any interaction with area selection.Subclause 6.3.20Access priorityCall diversion shall not have any interaction with access priority.Subclause 6.3.21Priority callCall diversion shall not have any interaction with priority call.SIST ETS 300 392-10-4:1999
Page 10ETS 300 392-10-04: April 1996Subclause 6.3.22Call waitingIf the served user has activated both SS-CFU and SS-Call Waiting (CW), then SS-CFU shall takeprecedence over SS-CW and the served user shall not receive an indication that a call is waiting.Subclause 6.3.23Call holdCall diversion shall not have any interaction with call hold.Subclause 6.3.24Late entryCall diversion shall not have any interaction with late entry.Subclause 6.3.25Transfer of controlCall diversion shall not have any interaction with transfer of control.Subclause 6.3.26Pre-emptive priority callIf the calling user has invoked SS-Pre-emptive Priority Call (PPC) and the served user has activated SS-CFU, then the call shall be forwarded in accordance with SS-CFU.Subclause 6.3.27Include callCall diversion shall not have any interaction with include call.Subclause 6.3.28Advice of chargeCall diversion shall not have any interaction with advice of charge.Subclause 6.3.29Barring of outgoing callsCall diversion shall not have any interaction with barring of outgoing calls.Subclause 6.3.30Barring of incoming callsCall diversion shall not have any interaction with barring of incoming calls.Subclause 6.3.31Discreet listeningIf the served user has activated CFU and the calling user has invoked the SS-Discreet Listening (DL) thenSS-DL shall take precedence over SS-CFU and the calling user shall be connected to the served user ifan appropriate call is in progress.If the served user has invoked the SS-DL and the called party has activated SS-CFU, then SS-DL shalltake precedence over SS-CFU and the served user shall be connected to the called user if an appropriatecall is in progress.Subclause 6.3.32Ambience listeningCall diversion shall not have any interaction with ambience listening.Subclause 6.3.33Dynamic group number assignmentCall diversion shall not have any interaction with dynamic group number assignment.Subclause 6.4 shall apply.Subclause 6.5, figure 1: SS-CF, Overall SDL parts 1 to 3 are applicable.SIST ETS 300 392-10-4:1999
Page 11ETS 300 392-10-04: April 1996The following amendment shall be applied to part 1. The text in the second decision box shall contain thewords "CFNRy/CFNRc?".4.3Delta CFB supplementary serviceClause 7 shall apply with the following amendments and additions:All references to Private Telecommunications Networks (PTNs) shall be replaced by "SwMIs".Subclause 7.1.2The sentence shall be replaced by the following: "This supplementary serviceshall be applicable to all individual telecommunication services."Subclause 7.2.1With ref
...
SLOVENSKI STANDARD
01-november-1999
Prizemni snopovni radio (TETRA) - Govor in podatki (V+D) - 10. del: Dopolnilne
storitve stopnje 1 - 4. poglavje: Izsmeritev klica
Terrestrial Trunked Radio (TETRA); Voice plus Data (V+D); Part 10: Supplementary
services stage 1; Sub-part 4: Call diversion
Ta slovenski standard je istoveten z: ETS 300 392-10-4 Edition 1
ICS:
33.070.10 Prizemni snopovni radio Terrestrial Trunked Radio
(TETRA) (TETRA)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN ETS 300 392-10-04
TELECOMMUNICATION April 1996
STANDARD
Source: ETSI TC-RES Reference: DE/RES-06001-10-04
ICS: 33.020, 33.060.50
TETRA, V+D
Key words:
Radio Equipment and Systems (RES);
Trans-European Trunked Radio (TETRA);
Voice plus Data (V+D);
Part 10: Supplementary services stage 1;
Part 10-04: Call diversion
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
F-06921 Sophia Antipolis CEDEX - FRANCE
Postal address:
650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Office address:
c=fr, a=atlas, p=etsi, s=secretariat - secretariat@etsi.fr
X.400: Internet:
Tel.: +33 92 94 42 00 - Fax: +33 93 65 47 16
*
Copyright Notification: No part may be reproduced except as authorized by written permission. The copyright and the
foregoing restriction extend to reproduction in all media.
© European Telecommunications Standards Institute 1996. All rights reserved.
Page 2
ETS 300 392-10-04: April 1996
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, please write to
"ETSI Editing and Committee Support Dept." at the address shown on the title page.
Page 3
ETS 300 392-10-04: April 1996
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .7
3.1 Definitions .7
3.2 Abbreviations .7
3.2.1 General abbreviations .7
3.2.2 Supplementary service abbreviations .8
4 Delta stage 1 descriptions.8
4.1 Document ECMA-CFSD (1992).8
4.2 Delta CFU supplementary service .8
4.3 Delta CFB supplementary service .11
4.4 Delta CFNRy supplementary service.13
4.5 Delta CFNRc supplementary service.15
History.19
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ETS 300 392-10-04: April 1996
Blank page
Page 5
ETS 300 392-10-04: April 1996
Foreword
This European Telecommunication Standard (ETS) has been produced by the Radio Equipment and
Systems (RES) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS is a multi-part standard and will consist of the following parts:
Part 1: "General network design".
Part 2: "Air Interface (AI)".
Part 3: "Inter-working", (DE/RES-06001-3).
Part 4: "Gateways", (DE/RES-06001-4).
Part 5: "Terminal equipment interface", (DE/RES-06001-5).
Part 6: "Line connected stations", (DE/RES-06001-6).
Part 7: "Security".
Part 8: "Management services", (DE/RES-06001-8).
Part 9: "Performance objectives", (DE/RES-06001-9).
Part 10: "Supplementary services stage 1".
Part 11: "Supplementary services stage 2", (DE/RES-06001-11).
Part 12: "Supplementary services stage 3", (DE/RES-06001-12).
Part 13: "SDL Model of the Air Interface", (DE/RES-06001-13).
Part 14: "PICS Proforma", (DE/RES-06001-14).
Part 15: "Inter-working - Extended Operations", (DE/RES-06001-15).
Part 16: "Gateways for Supplementary Services", (DE/RES-06001-16).
Transposition dates
Date of adoption of this ETS: 1 March 1996
Date of latest announcement of this ETS (doa): 31 July 1996
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 January 1997
Date of withdrawal of any conflicting National Standard (dow): 31 January 1997
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ETS 300 392-10-04: April 1996
Blank page
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ETS 300 392-10-04: April 1996
1 Scope
This European Telecommunication Standard (ETS) is a delta document detailing the deviations of the
Trans-European Trunked Radio (TETRA) Call Forwarding Unconditional (CFU), Call Forwarding Busy
(CFB) Call Forwarding No Reply (CFNRy) and Call Forwarding Not Reachable (CFNRc) supplementary
services from the ECMA standard stage 1, ECMA-CFSD [1].
In the case of CFNRc, the deviations shall refer to the ECMA CFNR description. In addition this
supplementary service is considered to be applicable only to mobile subscribers, as a line station is
always considered as reachable.
This ETS applies to individual TETRA teleservices and bearer services only. Only SS-CFU is applicable to
group calls.
2 Normative references
This ETS incorporates, by dated or undated 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 in it by amendment or revision. For undated references the latest
edition of the publication referred to applies.
[1] ECMA-CFSD (1992): "Specification, Functional Model and Information Flows
for Diversion Supplementary Services" (ref. ECMA/TC32-TG6/92/34, Fifth (final
Draft).
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
bearer service: A type of telecommunication service that provides the capability for the transmission of
signals between user-network interfaces.
Supplementary Service (SS): A supplementary service modifies or supplements a bearer service or a
teleservice. A supplementary service cannot be offered to a customer as a stand alone service. It should
be offered in combination with a bearer service or a teleservice.
Switching and Management Infrastructure (SwMI): All of the TETRA equipment for a Voice plus Data
(V+D) network except for subscriber terminals. The SwMI enables subscriber terminals to communicate
with each other via the SwMI.
teleservice: A type of telecommunications service that provides the complete capability, including
terminal equipment functions, for communication between users according to agreed protocols.
3.2 Abbreviations
3.2.1 General abbreviations
For the purposes of this ETS, the following general abbreviations apply:
PTN Private Telephone Network
SDL (Functional) Specification and Description Language
SS Supplementary Service
NOTE: The abbreviation SS is only used when referring to a specific supplementary service.
SwMI Switching and Management Infrastructure
TETRA Trans-European Trunked RAdio
V+D Voice Plus Data
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ETS 300 392-10-04: April 1996
3.2.2 Supplementary service abbreviations
For the purpose of this ETS, the following supplementary service abbreviations apply:
CFB Call Forwarding on Busy
CFNRy Call Forwarding on No Reply
CFNRc Call Forwarding on Not Reachable
CFU Call Forwarding Unconditional
CR Call Report
CT Call Transfer
CW Call Waiting
DL Discreet Listening
PPC Pre-emptive Priority Call
PR Path Replacement
4 Delta stage 1 descriptions
4.1 Document ECMA-CFSD (1992)
Clause 1 shall apply. The first paragraph shall contain reference to Call Forwarding on Not Reachable
(CFNRc). All references to Private Telecommunications Networks (PTNs) shall be replaced by "SwMIs".
Clause 2 shall not apply.
Clause 3 shall apply.
Clause 4 shall apply with the following amendments:
Subclause 4.9 The parameter shall also contain "CFNRy and CFNRc";
Subclause 4.11 The supplementary service "call deflection" is not supported by TETRA.
All references to Private Telecommunications Networks (PTNs) shall be replaced by "SwMIs".
The supplementary service abbreviation CFNR shall be replaced with CFNRy.
4.2 Delta CFU supplementary service
Clause 5 shall apply with the following amendments:
The supplementary service abbreviation CFNR shall be replaced with CFNRy;
The clause shall contain "SS-CFNRc - Call Forwarding Not Reachable".
Clause 6 shall apply with the following amendments and additions:
Subclause 6.1.2 The sentence shall be replaced by the following: "This supplementary service
shall be applicable to all individual telecommunication services";
Subclause 6.2.1 Table 1, the transmission of names shall not be supported by TETRA.
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ETS 300 392-10-04: April 1996
Subclause 6.2.2.1.1 The following text shall be added:
"TETRA shall not support sub-addressing:
- only one terminal can use a single TETRA number at any one time;
- only one compatible terminal shall be applicable for the basic
service."
Subclause 6.3.4 The supplementary service calling name identification presentation shall not be
supported by TETRA.
Subclause 6.3.5 The supplementary service connected name identification presentation shall not
be supported by TETRA.
Subclause 6.3.6 The supplementary service calling/connected name identification restriction shall
not be supported by TETRA.
Subclause 6.3.9 The Call Transfer (CT) supplementary service shall not be supported by TETRA.
Subclause 6.3.12 The supplementary service Path Replacement (PR) shall not be supported by
TETRA.
The following clauses shall be added:
Subclause 6.3.13 Call forwarding not reachable
The invocation of CFU shall take precedence over CFNRc.
Subclause 6.3.14 Call report
If the call to user B is diverted to user C, then an SS-Call report (CR) invocation from user A shall be
applied to the diverted-to user C.
Subclause 6.3.15 Talking party identification
Call diversion shall not have any interaction with talking party identification.
Subclause 6.3.16 List search call
Call diversion shall not have any interaction with list search call.
Subclause 6.3.17 Call authorized by dispatcher
Call diversion shall not have any interaction with call authorized by dispatcher.
Subclause 6.3.18 Short number addressing
Call diversion shall not have any interaction with short number addressing.
Subclause 6.3.19 Area selection
Call diversion shall not have any interaction with area selection.
Subclause 6.3.20 Access priority
Call diversion shall not have any interaction with access priority.
Subclause 6.3.21 Priority call
Call diversion shall not have any interaction with priority call.
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ETS 300 392-10-04: April 1996
Subclause 6.3.22 Call waiting
If the served user has activated both SS-CFU and SS-Call Waiting (CW), then SS-CFU shall take
precedence over SS-CW and the served user shall not receive an indication that a call is waiting.
Subclause 6.3.23 Call hold
Call diversion shall not have any interaction with call hold.
Subclause 6.3.24 Late entry
Call diversion shall not have any interaction with late entry.
Subclause 6.3.25 Transfer of control
Call diversion shall not have any interaction with transfer of control.
Subclause 6.3.26 Pre-emptive priority call
If the calling user has invoked SS-Pre-emptive Priority Call (PPC) and the served user has activated SS-
CFU, then the call shall be forwarded in accordance with SS-CFU.
Subclause 6.3.27 Include call
Call diversion shall not have any interaction with include call.
Subclause 6.3.28 Advice of charge
Call diversion shall not have any interaction with advice of charge.
Subclause 6.3.29 Barring of outgoing calls
Call diversion shall not have any interaction with barring of outgoing calls.
Subclause 6.3.30 Barring of incoming calls
Call diversion shall not have any interaction with barring of incoming calls.
Subclause 6.3.31 Discreet listening
If the served user has activated CFU and the calling user has invoked the SS-Discreet Listening (DL) then
SS-DL shall take precedence over SS-CFU and the calling user shall be connected to the served user if
an appropriate call is in progress.
If the served user has invoked the SS-DL and the called party has activated SS-CFU, then SS-DL shall
take precedence over SS-CFU and the served user shall be connected to the called user if an appropriate
call is in progress.
Subclause 6.3.32 Ambience listening
Call diversion shall not have any interaction with ambience listening.
Subclause 6.3.33 Dynamic group number assignment
Call diversion shall not have any interaction with dynamic group number assignment.
Subclause 6.4 shall apply.
Subclause 6.5, figure 1: SS-CF, Overall SDL parts 1 to 3 are applicable.
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ETS 300 392-10-04: April 1996
The following amendment shall be applied to part 1. The text in the second decision box shall contain the
words "CFNRy/CFNRc?".
4.3 Delta CFB supplementary service
Clause 7 shall apply with the following amendments and additions:
All references to Private Telecommunications Networks (PTNs) shall be replaced by "SwMIs".
Subclause 7.1.2 The sentence shall be replaced by the following: "Th
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