SIST ETS 300 646-4:1998

SLOVENSKI STANDARD
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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 4: Abstract
Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing
(PIXIT) proforma specification
Ta slovenski standard je istoveten z: ETS 300 646-4 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 300 646-4
TELECOMMUNICATION March 1998
STANDARD
Source: SPS Reference: DE/SPS-01029-3
ICS: 33.020
Key words: ISDN, SS7, ISUP, GSM, mobile, radio, PLMN, interworking, testing, ATS, PIXIT
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 4: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT) proforma
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: secretariat@etsi.fr - http://www.etsi.fr - http://www.etsi.org
Tel.: +33 4 92 94 42 00 - Fax: +33 4 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 1998. All rights reserved.

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ETS 300 646-4: 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.

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ETS 300 646-4: March 1998
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .8
3.1 Definitions .8
3.2 Abbreviations .9
4 Implementation under test and test methods.10
4.1 Identification of the system and implementation under test.10
4.2 ATM and testing configuration for ISUP version 2 for the ISDN-PLMN signalling
interface .10
4.2.1 Gateway exchanges.11
4.2.2 Master-slave aspects in the test configuration .12
5 Conventions used within the ATS .12
5.1 Test suite parameters, constants and variables .12
5.2 Test case variables.13
5.3 ASP constraints .13
5.4 Timers.13
5.5 Test suite operations .13
5.6 Aliases .13
5.7 Test case and step identifiers.13
5.8 Constraints.14
5.9 Dynamic behaviour .14
5.10 Pre-test conditions .14
Annex A (normative): ATS for ISUP version 2 for the ISDN-PLMN interface .15
A.1 The TTCN Graphical form (TTCN.GR) .15
A.2 The TTCN Machine Processable form (TTCN.MP) .15
Annex B (normative): Partial PIXIT proforma for ISUP version 2 for the ISDN-PLMN interface.16
B.1 Identification summary .16
B.2 Abstract test suite summary.16
B.3 Test laboratory .16
B.4 Client identification .16
B.5 System Under Test (SUT).17
B.6 Ancillary protocols .17
B.7 Protocol information for ISUP.17
B.7.1 Protocol identification.17
B.7.2 IUT information - PIXIT proforma tables.17
B.7.2.1 General configuration.18
B.7.2.2 Parameter values .19
B.7.2.3 Timer values.19
B.7.2.4 Other information.19

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ETS 300 646-4: March 1998
Annex C (normative): Protocol Conformance Test Report (PCTR) proforma for ISUP version 2 for
the ISDN-PLMN signalling interface . 20
C.1 Identification summary. 20
C.1.1 Protocol conformance test report. 20
C.1.2 IUT identification. 20
C.1.3 Testing environment. 20
C.1.4 Limits and reservation . 21
C.1.5 Comments. 21
C.2 IUT conformance status . 21
C.3 Static conformance summary. 21
C.4 Dynamic conformance summary. 21
C.5 Static conformance review report . 22
C.6 Test campaign report. 22
C.7 Observations. 23
History. 24

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ETS 300 646-4: 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 4 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

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ETS 300 646-4: March 1998
Blank page
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ETS 300 646-4: March 1998
1 Scope
This fourth part of ETS 300 646 provides the conformance test specification 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 [1] in compliance with the
relevant requirements and in accordance with the relevant guidance given in ISO/IEC 9646-1 [6].
This ETS contains the abstract test suite (ATS) for ISUP version 2 for the ISDN-PLMN interface, written in
Tree and Tabular Combined Notation (TTCN) as specified in ISO/IEC 9646-3 [8]. It is based on
ETS 300 646-3 [3] which specifies the Test Suite Structure and Test Purposes (TSS&TP).
This ETS applies only to exchanges having implemented the ISUP version 2 protocol specification. It is
applicable for conformance testing of gateways in the fixed network or in the public land mobile network
as defined in the ISUP version 2 for the ISDN-PLMN interface specification ETS 300 646-1 [1]. This ETS
does not deal with compatibility testing.
The main text part of this ETS presents the requirements regarding the chosen test method and the
conventions used within the ATS.
The annexes present the ATS for ISUP version 2 for the ISDN-PLMN interface (available on electronic
media), the partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma and the
Protocol Conformance Test Report (PCTR) proforma.
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 300 646-1 (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)".
[2] 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".
[3] ETS 300 646-3: "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 3: Test Suite Structure and Test Purposes
(TSS&TP) specification".
[4] ETS 300 406: "Methods for Testing and Specification (MTS); Protocol and
profile conformance testing specifications; Standardization methodology".
[5] ETR 141: "Methods for Testing and Specification (MTS); Protocol and profile
conformance testing specifications; The Tree and Tabular Combined Notation
(TTCN) style guide".
[6] ISO/IEC 9646-1: "Information technology - Open Systems Interconnection -
Conformance testing methodology and framework - Part 1: General concepts".
[7] ISO/IEC 9646-2: "Information technology - Open Systems Interconnection -
Conformance testing methodology and framework - Part 2: Abstract Test Suite
specification".
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ETS 300 646-4: March 1998
[8] ISO/IEC 9646-3: "Information technology - Open Systems Interconnection -
Conformance testing methodology and framework - Part 3: The Tree and
Tabular Combined Notation (TTCN)".
[9] ISO/IEC 9646-5: "Information technology - Open Systems Interconnection -
Conformance testing methodology and framework - Part 5: Requirements on
test laboratories and clients for the conformance assessment process".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
- terms defined in ETS 300 646-1 [1];
- terms defined in ISO/IEC 9646-1 [6] and in ISO/IEC 9646-3 [8].
In particular, the following terms apply:
Abstract Test Case (ATC): A complete and independent specification of the actions required to achieve a
specific test purpose, defined at the level of abstraction of a particular Abstract Test Method, starting in a
stable testing state and ending in a stable testing state (see ISO/IEC 9646-1 [6], subclause 3.3.3).
Abstract Test Method (ATM): The description of how an IUT is to be tested, given at an appropriate level
of abstraction to make the description independent of any particular realization of a Means of Testing, but
with enough detail to enable abstract test cases to be specified for this method (see ISO/IEC 9646-1 [6],
subclause 3.3.5).
Abstract Test Suite (ATS): A test suite composed of abstract test cases (see ISO/IEC 9646-1 [6],
subclause 3.3.6).
Implementation Under Test (IUT): An implementation of one or more OSI protocols in an adjacent
user/provider relationship, being part of a real open system which is to be studied by testing (see
ISO/IEC 9646-1 [6], subclause 3.3.43).
Means Of Testing (MOT): The combination of equipment and procedures that can perform the
derivation, selection, parametrization and execution of test cases, in conformance with a reference
standardized ATS, and can produce a conformance log (see ISO/IEC 9646-1 [6], subclause 3.3.54).
Point of Control and Observation (PCO): A point within a testing environment where the occurrence of
test events is to be controlled and observed, as defined in an abstract test method (see
ISO/IEC 9646-1 [6], subclause 3.3.64).
pre-test condition: A setting or state in the IUT which cannot be achieved by providing stimulus from the
test environment.
Protocol Implementation Conformance Statement (PICS): A statement made by the supplier of a
protocol claimed to conform to a given specification, stating which capabilities have been implemented
(see ISO/IEC 9646-1 [6], subclauses 3.3.39 and 3.3.80).
PICS proforma: A document, in the form of a questionnaire, which when completed for an
implementation or system becomes the PICS.
Protocol Implementation eXtra Information for Testing (PIXIT): A statement made by a supplier or
implementor of an IUT (protocol) which contains or references all of the information related to the IUT and
its testing environment, which will enable the test laboratory to run an appropriate test suite against the
IUT (see ISO/IEC 9646-1 [6], subclauses 3.3.41 and 3.3.81).
PIXIT proforma: A document, in the form of a questionnaire, which when completed for the IUT becomes
the PIXIT.
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ETS 300 646-4: March 1998
System Under Test (SUT): The real open system in which the IUT resides (see ISO/IEC 9646-1 [6],
subclause 3.3.103).
user: The access protocol entity at the User side of the user-network interface where a T reference point
or coincident S and T reference point applies.
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
ASP Abstract Service Primitive
ATC Abstract Test Case
ATM Abstract Test Method
ATS Abstract Test Suite
CIC Circuit Identification Code
GMSC Gateway MSC
GSM Global System for Mobile communications
IncGateway Incoming fixed network gateway
IncGMSC Incoming GMSC
ISDN Integrated Services Digital Network
ISUP ISDN User Part
IUT Implementation Under Test
LT Lower Tester
MOT Means Of Testing
MSC Mobile-service Switching Centre
MS Mobile Station
MSISDN Mobile Station ISDN number
MSRN Mobile Station Roaming Number
MTC Main Test Component
MTP Message Transfer Part
NNI Network-network interface
PCO Point of Control and Observation
PCTR Protocol Conformance Test Report
PTC Parallel Test Component
PDU Protocol Data Unit
NI Network Indicator
OutGateway Outgoing fixed network gateway
OutGMSC Outgoing GMSC
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
PLMN Public Land Mobile Network
SCS System Conformance Statement
SP Signalling Point
SPC Signalling Point Code
SS7 Signalling System No.7
SUT System Under Test
TCP Test Co-ordination Procedures
TSS&TP Test Suite Structure and Test Purposes
TTCN Tree and Tabular Combined Notation
UNI User-network interface
UT Upper Tester
VMSC Visited MSC
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ETS 300 646-4: March 1998
4 Implementation under test and test methods
4.1 Identification of the system and implementation under test
The System Under Test (SUT) is a gateway exchange located either in the fixed (ISDN) network or in the
Public Land Mobile Network (PLMN). The Implementation Under Test (IUT) is the ISUP version 2
implementation in this gateway exchange, as shown in figure 1.
Gateway exchange
ISDN - Integrated Services Digital Network
ISUP ISUP
ISUP - ISDN User Part
ISUP v2
IUT - Implementation Under Test
IUT
ISDN / PLMN ISDN / PLMN
PLMN - Public Land Mobile Network
interface interface
SUT - System Under Test
SUT
Figure 1: Exchange as SUT
At least one of the shown ISUP signalling interfaces is a ISDN-PLMN signalling interface. The ISUP
signalling protocol can be observed on the SS7 link on the Network-Network Interface (NNI). The effects
of signalling procedures of ISUP can be observed on the circuits controlled by the ISUP on the NNI.
From ETS 300 646-1 [1], two types of exchanges (or roles) can be identified (see figure 2).
Fixed network
PLMN network
ISDN / PLMN
Gateway GMSC
interface
Figure 2: Roles of exchanges
4.2 ATM and testing configuration for ISUP version 2 for the ISDN-PLMN signalling interface
The Abstract Test Method (ATM) chosen for the ISUP version 2 for the ISDN-PLMN signalling interface
testing specification is the distributed multi-party test method. The ATM is defined at an appropriate level
of abstraction so that the test cases may be specified appropriately, without adding restrictions to the IUT.
The testing architecture is described in the following subclauses.
The ATS is written in concurrent TTCN.

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ETS 300 646-4: March 1998
4.2.1 Gateway exchanges
The configuration proposed for testing the gateway exchanges is shown in figure 3. In order to test the
protocol and functionality of gateway exchanges one needs to consider the incoming and outgoing side of
the SUT.
Physical aspects
LT
LT
Circuits
Circuits
LT LT
TCP
ISUP link ISUP link
CAC
CAB
IUT
SP C SP B
LAC LAB
SP A
Network service provider Network service provider
IUT - Implementation Under Test LAB - PCO for signalling link AB
LT - Lower Tester CAB - PCO for AB circuits
PCO - Point of Control and Observation LAC - PCO for signalling link AC
SP - Signalling Point CAC - PCO for AC circuits
TCP - Test Coordination Procedures
Figure 3: ISUP test method for gateway exchanges
The IUT is observed and controlled from two ISUP links with associated circuits. The Points of Control
and Observation (PCO) are labelled LAB and CAB on one side, and LAC and CAC on the other.
The LAB and LAC PCOs are used by the Lower Testers (LT) for controlling the ISUP signalling link,
whereas the CAB and CAC PCOs are used by the lower testers for observing circuit related events, such
as connectivity, echo control check, alerting tone, etc.
The ISUP PDUs to be sent and observed on the LAB PCO side allow for PDU constraints to be specified
and coded down to the bit-level.
NOTE: The underlying network service provider is the Message Transfer Part (MTP) protocol
as specified in ITU-T Recommendations Q.701-Q.707/ETS 300 008.

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ETS 300 646-4: March 1998
Figure 4 shows the actual used configuration for gateway exchanges, with a Main Test Component
(MTC), responsible for the A-B interface and a slave Parallel Testing Component (PTC), responsible for
the C-A interface.
TCP
MTC
PTC
ISUP
ISUP
signalling,
signalling,
circuits
circuits
SP B
SP C IUT
LAC CAC LAB CAB
SP A
Network service provider Network service provider
IUT - Implementation Under Test LAB - PCO for signalling link AB
MTC - Main Test Component CAB - Circuit PCO on AB interface
PCO - Point of Control and Observation
LAC - PCO for signalling link AC
PTC - Parallel Test Component
CAC - Circuit PCO on AC in
...