SIST ETS 300 646-3:1998

• Abstract:

  Definition of ISUP version 2 tests in order to support compatibility & validation for nodes having implemented DE/SPS-6001-series. Scope of TSS&TP limited to the ISDN/PLMN interface.

• Status: Published
• Publication Date: 30-Sep-1998
• ICS: 33.080 - Integrated Services Digital Network (ISDN)
• Technical Committee: SPS - Signalling protocols and switching
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Oct-1998
• Due Date: 01-Oct-1998
• Completion Date: 01-Oct-1998
• Mandate: BC-T-340
• Ref Project: ETSI ETS 300 646-3 ed.1 (1998-03) - Integrated Services Digital Network (ISDN); Signalling System No.7; Digital cellular telecommunications system (Phase 2); Application of ISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network (PLMN) signalling interface; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification

SIST ETS 300 646-3:1998 is the Slovenian adoption of ETS 300 646-3 Edition 1 from ETSI. It specifies the Test Suite Structure and Test Purposes (TSS&TP) for ISUP version 2 on the ISDN-Public Land Mobile Network (PLMN) signalling interface, so implementers can validate behaviour at the ISDN/PLMN boundary. The standard is used for compatibility and validation testing of nodes that implement the DE/SPS-6001 series.

What does SIST ETS 300 646-3:1998 specify?

SIST ETS 300 646-3:1998 specifies the test structure and the test purposes for the second version of the ISDN-GSM PLMN signalling interface defined in ETS 300 646-1. The scope is limited to the ISDN/PLMN interface and the document follows the conformance testing guidance of ISO/IEC 9646-1.

The document is organized into a scope, normative references, definitions and abbreviations, a Test Suite Structure (TSS), and Test Purposes (TPs). The foreword also places it in a four-part series:

• Part 1 - Protocol specification
• Part 2 - Protocol Implementation Conformance Statement (PICS) proforma specification
• Part 3 - Test Suite Structure and Test Purposes (TSS&TP) specification
• Part 4 - Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification

What are the key requirements of SIST ETS 300 646-3:1998?

Clause 4 defines the overall TSS as ISUP_v2_ISDN_PLMN, split into BC for Basic Call and SS for Supplementary Services. In practice, this gives test engineers the top-level grouping they need to organize, select, and report conformance tests.

Clause 5 states that every test requirement has a TP, and Clause 5.1.1 gives the naming convention. The identifiers distinguish basic services (IPB) from supplementary services (IPS), include a group reference, a sequence number, and a valid or inopportune stimulus marker. That matters because it lets a lab trace each result back to one requirement and one stimulus type.

Clause 5.1.2 says the TPs are based on ETS 300 646-1, and Clause 5.1.3 separates normal behaviour from abnormal situations. The document therefore covers both expected call handling and behavior under non-normal conditions, which is important when checking robustness and interworking.

Clause 5.2 says each TP table gives the TSS identifier, TP identifier, the ISDN-PLMN reference, and a selection expression. The selection depends on the exchange role and the answers to the relevant PICS questions, so only applicable cases are run.

The Basic Call TPs cover call setup and indicator handling. Key examples include:

• carrying the mobile station roaming number in the IAM
• early ACM transmission after timer expiry
• mapping ACM information to CPG
• mapping CON information to ANM
• fallback in the GMSC
• echo control procedures
• coding of the ISDN access indicator
• including user service information in the IAM

These items matter because they verify how the node routes calls, forwards status information, and formats the signalling messages used in live call setup.

The Supplementary Services TPs cover CLIP, COLP, CCBS, and CFNRc. They check mapping between identity fields and numbers, discarding additional numbers from the IAM/ANM/CON when required, generating a REL for CCBS not possible, and passing or setting the redirecting reason for mobile subscriber not reachable. In practice, these tests confirm that supplementary service information is carried correctly across the interface.

What terms does SIST ETS 300 646-3:1998 define?

• Implementation Under Test (IUT) - the node or equipment being checked by the test purposes.
• Test Suite Structure (TSS) - the hierarchy used to group related test purposes.
• Test Purpose (TP) - a stated objective for one conformance test, tied to one requirement.
• Public Land Mobile Network (PLMN) - the mobile network side of the signalling interface.
• ISDN User Part (ISUP) - the SS7 protocol part used for call control signalling.
• Gateway MSC (GMSC) - the switching node that handles call entry or exit between networks.
• Mobile Station Roaming Number (MSRN) - the number used to route a call to a roaming mobile station.

Who uses SIST ETS 300 646-3:1998?

SIST ETS 300 646-3:1998 is used by conformance test engineers, equipment vendors, and laboratory teams that verify ISUP v2 implementations on the ISDN-PLMN interface. It also supports quality and acceptance teams that need to check basic call behaviour, supplementary services, and the handling of PICS-based test selection. Network operators and integrators use it when validating exchanges and gateways that interwork between ISDN and mobile signalling.

Which standards are used with SIST ETS 300 646-3:1998?

• ETS 300 646-1 - the protocol specification for the ISDN-PLMN interface; it is the main requirement source for the test purposes.
• ETS 300 646-2 - the PICS proforma specification; it supplies the conformance information used to select applicable tests.
• ETS 300 356-1 - the ISUP v2 basic services specification for the international interface; it supports basic call test purposes and fallback behaviour.
• ETS 300 356-15 - the ISUP v2 diversion supplementary services specification; it supports diversion-related test purposes.
• ETS 300 356-31 - the PICS proforma for basic services; it provides the basic-call PICS questions used in selection.
• ETS 300 356-34 - the PICS proforma for supplementary services; it provides the supplementary-service PICS questions used in selection.
• ISO/IEC 9646-1 - conformance testing concepts and framework.
• ISO/IEC 9646-2 - abstract test suite specification.

What does the SIST ETS 300 646-3:1998 document contain?

The document contains a figure showing the TSS structure and a naming scheme that separates Basic Call and Supplementary Services. It also contains a series of TP tables, each with identifiers, selection expressions, a short TP title, and a test objective. Where needed, the TP tables include pre-test conditions. The text also explains how ISUP messages and parameter names are presented for readability and how the TP tables relate back to the requirement references in the companion standards.

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.OLþLFHPHQIntegrated Services Digital Network (ISDN); Signalling System No.7; Digital cellular telecommunications system (Phase 2); Application of ISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network (PLMN) signalling interface; Part 3: Test Suite Structure and Test Purposes (TSS&TP) specification33.020Telekomunikacije na splošnoTelecommunications in generalICS:Ta slovenski standard je istoveten z:ETS 300 646-3 Edition 13SIST ETS 300 646-3:1998en01-DYJXVW-19983SIST ETS 300 646-3:1998SLOVENSKI
STANDARD
EUROPEANETS 300 646-3TELECOMMUNICATIONMarch 1998STANDARDSource: SPSReference: DE/SPS-01029-2ICS:33.020Key words:ISDN, SS7, ISUP, GSM, mobile, radio, PLMN, interworking, testing, TSS&TPIntegrated Services Digital Network (ISDN);Signalling System No.7;Digital cellular telecommunications system (Phase 2);Application of ISDN User Part (ISUP) version 2 for theISDN-Public Land Mobile Network (PLMN) signalling interface;Part 3: Test Suite Structure and Test Purposes (TSS&TP)specificationETSIEuropean Telecommunications Standards InstituteETSI SecretariatPostal address: F-06921 Sophia Antipolis CEDEX - FRANCEOffice address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCEInternet: [e-mail] - http://www.etsi.fr - http://www.etsi.orgTel.: [phone] - Fax: [phone]Copyright 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 1998. All rights reserved.SIST ETS 300 646-3:1998

Page 2ETS 300 646-3: March 1998Whilst 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 300 646-3:1998

Page 3ETS 300 646-3: March 1998ContentsForeword.51Scope.72Normative references.73Definitions and abbreviations.83.1Definitions.83.2Abbreviations.84Test Suite Structure (TSS).85Test Purposes (TP).95.1Introduction.95.1.1TP naming convention.95.1.2Source of TP definition.95.1.3TP structure.95.2TPs for the ISDN-PLMN signalling interface.95.2.1Basic call.105.2.2Supplementary services.125.2.2.1Calling Line Identification Presentation (CLIP).125.2.2.2Connected Line Identification Presentation (COLP).135.2.2.3Completion of Calls to Busy Subscriber (CCBS).145.2.2.4Call Forwarding on mobile subscriber Not Reachable(CFNRc).14History.15SIST ETS 300 646-3:1998

Page 4ETS 300 646-3: March 1998Blank pageSIST ETS 300 646-3:1998

Page 5ETS 300 646-3: March 1998ForewordThis European Telecommunication Standard (ETS) has been produced by the Signalling Protocols andSwitching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI).This ETS is part 3 of a multi-part standard covering the application of Integrated Services Digital Network(ISDN) User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network (PLMN) signalling interfaceas described below:Part 1:"Protocol specification (GSM 09.12)";Part 2:"Protocol Implementation Conformance Statement (PICS) proforma specification";Part 3:"Test Suite Structure and Test Purposes (TSS&TP) specification";Part 4:"Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing(PIXIT) proforma specification".Transposition datesDate of adoption of this ETS:6 March 1998Date of latest announcement of this ETS (doa):30 June 1998Date of latest publication of new National Standardor endorsement of this ETS (dop/e):31 December 1998Date of withdrawal of any conflicting National Standard (dow):31 December 1998SIST ETS 300 646-3:1998

Page 6ETS 300 646-3: March 1998Blank pageSIST ETS 300 646-3:1998

Page 7ETS 300 646-3: March 19981ScopeThis third part of ETS 300 646 provides the Test Suite Structure and Test Purposes (TSS&TP) for thesecond version of the Integrated Services Digital Network (ISDN) - Global System for Mobilecommunications (GSM) Public Land Mobile Network (PLMN) signalling interface defined inETS 300 646-1 [5] in compliance with the relevant requirements and in accordance with the relevantguidance given in ISO/IEC 9646-1 [7].2Normative referencesThis ETS incorporates by dated and 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]ETS 300 356-1 (1995): "Integrated Services Digital Network (ISDN); SignallingSystem No.7; ISDN User Part (ISUP) version 2 for the international interface;Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1993),modified]".[2]ETS 300 356-15 (1995): "Integrated Services Digital Network (ISDN); SignallingSystem No.7; ISDN User Part (ISUP) version 2 for the international interface;Part 15: Diversion supplementary services [ITU-T Recommendation Q.732,clauses 2 to 5 (1993), modified]".[3]ETS 300 356-31 (1997): "Integrated Services Digital Network (ISDN); SignallingSystem No.7; ISDN User Part (ISUP) version 2 for the international interface;Part 31: Protocol Implementation Conformance Statement (PICS) proformaspecification for basic services".[4]ETS 300 356-34: "Integrated Services Digital Network (ISDN); Signalling SystemNo.7; ISDN User Part (ISUP) version 2 for the international interface; Part 34:Protocol Implementation Conformance Statement (PICS) proforma specificationfor supplementary services".[5]ETS 300 646-1 (1997): "Integrated Services Digital Network (ISDN); SignallingSystem No.7; Digital cellular telecommunication systems (Phase 2); Applicationof the ISDN User Part (ISUP) version 2 for the ISDN-Public Land MobileNetwork (PLMN) signalling interface; Part 1: Protocol specification (GSM 09.12version 4.1.1)".[6]ETS 300 646-2: "Integrated Services Digital Network (ISDN); Signalling SystemNo.7; Digital cellular telecommunication systems (Phase 2); Application of theISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network(PLMN) signalling interface; Part 2: Protocol Implementation ConformanceStatement (PICS) proforma specification".[7]ISO/IEC 9646-1: "Information technology - Open Systems Interconnection -Conformance testing methodology and framework - Part 1: General concepts".[8]ISO/IEC 9646-2: "Information technology - Open Systems Interconnection -Conformance testing methodology and framework - Part 2: Abstract Test Suitespecification".SIST ETS 300 646-3:1998

Page 8ETS 300 646-3: March 19983Definitions and abbreviations3.1DefinitionsFor the purposes of this ETS, the following definitions apply:-terms defined in ETS 300 646-1 [5];-terms defined in ISO/IEC 9646-1 [7] and in ISO/IEC 9646-2 [8].3.2AbbreviationsFor the purposes of this ETS, the following abbreviations apply:ACMAddress Complete MessageANMAnswer MessageCCBSCompletion of Calls to Busy SubscriberCFNRcCall Forwarding on mobile subscriber Not ReachableCLIPCalling Line Identification PresentationCOLPConnected Line Identification PresentationCONConnect MessageCPGCall Progress MessageGMSCGateway MSCGSMGlobal System for Mobile communicationsIAMInitial Address MessageIncGatewayIncoming fixed network GatewayIncGMSCIncoming GMSCISDNIntegrated Services Digital NetworkISUPISDN User PartIUTImplementation Under TestMOCMobile Originated CallMSMobile StationMSCMobile-service Switching CentreMSRNMobile Station Roaming NumberMTCMobile Terminated CallOutGatewayOutgoing fixed network GatewayOutGMSCOutgoing GMSCPICSProtocol Implementation Conformance StatementPLMNPublic Land Mobile NetworkTPTest PurposeTSSTest Suite StructureVMSCVisited MSC4Test Suite Structure (TSS)ISUP_v2_ISDN_PLMNBCSSFigure 1: Test suite structureTSS naming conventionsBCBasic CallSSSupplementary ServicesVValid behaviour stimulusIInopportune stimulusSIST ETS 300 646-3:1998

Page 9ETS 300 646-3: March 19985Test Purposes (TP)5.1IntroductionFor each test requirement a TP is defined.5.1.1TP naming conventionTPs are numbered ascending within each group. Groups are organized according to the TSS down to thelast but one level. The classification in the V/I groups is done by the inclusion of V or I in the test casename (see table 1).Table 1: TP identifier naming convention schemeIdentifier:IPB___{}IPS___{}IPB=ISUP version 2 on the ISDN-PLMN interface Basic servicesIPS=ISUP version 2 on the ISDN-PLMN interface Supplementary services=One character field representing the group reference according to the testsuite structureV:Valid stimulusI: Inopportune stimulus=Sequence number=Optional additional number5.1
...

SLOVENSKI STANDARD
01-oktober-1998
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PRELOQRRPUHåMH3/01GHO=JUDGEDSUHVNXãDOQHJDQL]DLQQDPHQ
SUHVNXãDQMD766 736SHFLILNDFLMD
Integrated Services Digital Network (ISDN); Signalling System No.7; Digital cellular
telecommunications system (Phase 2); Application of ISDN User Part (ISUP) version 2
for the ISDN-Public Land Mobile Network (PLMN) signalling interface; Part 3: Test Suite
Structure and Test Purposes (TSS&TP) specification
Ta slovenski standard je istoveten z: ETS 300 646-3 Edition 1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN ETS 300 646-3
TELECOMMUNICATION March 1998
STANDARD
Source: SPS Reference: DE/SPS-01029-2
ICS: 33.020
Key words: ISDN, SS7, ISUP, GSM, mobile, radio, PLMN, interworking, testing, TSS&TP
Integrated Services Digital Network (ISDN);
Signalling System No.7;
Digital cellular telecommunications system (Phase 2);
Application of ISDN User Part (ISUP) version 2 for the
ISDN-Public Land Mobile Network (PLMN) signalling interface;
Part 3: Test Suite Structure and Test Purposes (TSS&TP)
specification
ETSI
European Telecommunications Standards Institute
ETSI Secretariat
Postal address: F-06921 Sophia Antipolis CEDEX - FRANCE
Office address: 650 Route des Lucioles - Sophia Antipolis - Valbonne - FRANCE
Internet: [e-mail] - http://www.etsi.fr - http://www.etsi.org
Tel.: [phone] - Fax: [phone]
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 1998. All rights reserved.

Page 2
ETS 300 646-3: March 1998
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 300 646-3: March 1998
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .8
3.1 Definitions .8
3.2 Abbreviations .8
4 Test Suite Structure (TSS) .8
5 Test Purposes (TP).9
5.1 Introduction .9
5.1.1 TP naming convention.9
5.1.2 Source of TP definition.9
5.1.3 TP structure.9
5.2 TPs for the ISDN-PLMN signalling interface.9
5.2.1 Basic call .10
5.2.2 Supplementary services .12
5.2.2.1 Calling Line Identification Presentation (CLIP) .12
5.2.2.2 Connected Line Identification Presentation (COLP).13
5.2.2.3 Completion of Calls to Busy Subscriber (CCBS).14
5.2.2.4 Call Forwarding on mobile subscriber Not Reachable
(CFNRc) .14
History.15

Page 4
ETS 300 646-3: March 1998
Blank page
Page 5
ETS 300 646-3: March 1998
Foreword
This European Telecommunication Standard (ETS) has been produced by the Signalling Protocols and
Switching (SPS) Technical Committee of the European Telecommunications Standards Institute (ETSI).
This ETS is part 3 of a multi-part standard covering the application of Integrated Services Digital Network
(ISDN) User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network (PLMN) signalling interface
as described below:
Part 1: "Protocol specification (GSM 09.12)";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing
(PIXIT) proforma specification".
Transposition dates
Date of adoption of this ETS: 6 March 1998
Date of latest announcement of this ETS (doa): 30 June 1998
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 December 1998
Date of withdrawal of any conflicting National Standard (dow): 31 December 1998

Page 6
ETS 300 646-3: March 1998
Blank page
Page 7
ETS 300 646-3: March 1998
1 Scope
This third part of ETS 300 646 provides the Test Suite Structure and Test Purposes (TSS&TP) for the
second version of the Integrated Services Digital Network (ISDN) - Global System for Mobile
communications (GSM) Public Land Mobile Network (PLMN) signalling interface defined in
ETS 300 646-1 [5] in compliance with the relevant requirements and in accordance with the relevant
guidance given in ISO/IEC 9646-1 [7].
2 Normative references
This ETS incorporates by dated and 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] ETS 300 356-1 (1995): "Integrated Services Digital Network (ISDN); Signalling
System No.7; ISDN User Part (ISUP) version 2 for the international interface;
Part 1: Basic services [ITU-T Recommendations Q.761 to Q.764 (1993),
modified]".
[2] ETS 300 356-15 (1995): "Integrated Services Digital Network (ISDN); Signalling
System No.7; ISDN User Part (ISUP) version 2 for the international interface;
Part 15: Diversion supplementary services [ITU-T Recommendation Q.732,
clauses 2 to 5 (1993), modified]".
[3] ETS 300 356-31 (1997): "Integrated Services Digital Network (ISDN); Signalling
System No.7; ISDN User Part (ISUP) version 2 for the international interface;
Part 31: Protocol Implementation Conformance Statement (PICS) proforma
specification for basic services".
[4] ETS 300 356-34: "Integrated Services Digital Network (ISDN); Signalling System
No.7; ISDN User Part (ISUP) version 2 for the international interface; Part 34:
Protocol Implementation Conformance Statement (PICS) proforma specification
for supplementary services".
[5] ETS 300 646-1 (1997): "Integrated Services Digital Network (ISDN); Signalling
System No.7; Digital cellular telecommunication systems (Phase 2); Application
of the ISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile
Network (PLMN) signalling interface; Part 1: Protocol specification (GSM 09.12
version 4.1.1)".
[6] ETS 300 646-2: "Integrated Services Digital Network (ISDN); Signalling System
No.7; Digital cellular telecommunication systems (Phase 2); Application of the
ISDN User Part (ISUP) version 2 for the ISDN-Public Land Mobile Network
(PLMN) signalling interface; Part 2: Protocol Implementation Conformance
Statement (PICS) proforma specification".
[7] ISO/IEC 9646-1: "Information technology - Open Systems Interconnection -
Conformance testing methodology and framework - Part 1: General concepts".
[8] ISO/IEC 9646-2: "Information technology - Open Systems Interconnection -
Conformance testing methodology and framework - Part 2: Abstract Test Suite
specification".
Page 8
ETS 300 646-3: March 1998
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
- terms defined in ETS 300 646-1 [5];
- terms defined in ISO/IEC 9646-1 [7] and in ISO/IEC 9646-2 [8].
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
ACM Address Complete Message
ANM Answer Message
CCBS Completion of Calls to Busy Subscriber
CFNRc Call Forwarding on mobile subscriber Not Reachable
CLIP Calling Line Identification Presentation
COLP Connected Line Identification Presentation
CON Connect Message
CPG Call Progress Message
GMSC Gateway MSC
GSM Global System for Mobile communications
IAM Initial Address Message
IncGateway Incoming fixed network Gateway
IncGMSC Incoming GMSC
ISDN Integrated Services Digital Network
ISUP ISDN User Part
IUT Implementation Under Test
MOC Mobile Originated Call
MS Mobile Station
MSC Mobile-service Switching Centre
MSRN Mobile Station Roaming Number
MTC Mobile Terminated Call
OutGateway Outgoing fixed network Gateway
OutGMSC Outgoing GMSC
PICS Protocol Implementation Conformance Statement
PLMN Public Land Mobile Network
TP Test Purpose
TSS Test Suite Structure
VMSC Visited MSC
4 Test Suite Structure (TSS)
ISUP_v2_ISDN_PLMN
BC
SS
Figure 1: Test suite structure
TSS naming conventions
BC Basic Call
SS Supplementary Services
V Valid behaviour stimulus
I Inopportune stimulus
Page 9
ETS 300 646-3: March 1998
5 Test Purposes (TP)
5.1 Introduction
For each test requirement a TP is defined.
5.1.1 TP naming convention
TPs are numbered ascending within each group. Groups are organized according to the TSS down to the
last but one level. The classification in the V/I groups is done by the inclusion of V or I in the test case
name (see table 1).
Table 1: TP identifier naming convention scheme
Identifier: IPB___{}
IPS___{}
IPB = ISUP version 2 on the ISDN-PLMN interface Basic services
IPS = ISUP version 2
...