SIST ETS 300 607-3 E10:2003

Digital cellular telecommunications system (Phase 2) (GSM); Mobile Station (MS) conformance specification; Part 3: Layer 3 (L3) Abstract Test Suite (ATS) (GSM 11.10-3 version 4.24.1)

SUBJECT Implementing  TDoc 7-67/98 Implementation Error: Incorrect Use Of Cell Allocation Data Strucutures Implementation error in Handover test cases sends wrong SysInfo6 message Implementation errors in the 26.6.5.4 test case series Implementation of Tdoc SMG7 137/98 (Hopping Channel required) Implementation problems in 26.6.13 series DCS Test Cases Problem in MO test cases for Dual Rate phones Problem with conflicting carrier initialisation in TC_20_15 Problem implementing a TTCN pre-defined operation DCS implementation error in the 26.6.5.1 test case DCS Handover Tests, NCD to include BCCH arfcn Correction for DCS frequencies for 26_6_4_1 Implementation errors in Handover test cases for Releasing the Channel being Handed Over From SI3 coding conflict in 26.2.4.3 and 26.2.4.4 Implementation errors in Handover test cases cause L2 reaching N200 limit RF Signal parameter change for TC_20_1

Digitalni celični telekomunikacijski sistem (faza 2) – Specifikacija skladnosti za mobilne postaje (MS) – 3. del: Abstraktni preskušalni niz (ATS) tretje plasti (L3) (GSM 11.10-3 različica 4.24.1)

General Information

• Status: Published
• Publication Date: 30-Nov-2003
• ICS: 33.070.50 - Global System for Mobile Communication (GSM)
• Technical Committee: SS EIT - Technical Board for the electrotechnical, information technology and telecommunications fields
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Dec-2003
• Due Date: 01-Dec-2003
• Completion Date: 01-Dec-2003
• Mandate: T-247
• Ref Project: ETSI ETS 300 607-3 ed.10 (1999-04) - Digital cellular telecommunications system (Phase 2) (GSM); Mobile Station (MS) conformance specification; Part 3: Layer 3 (L3) Abstract Test Suite (ATS) (GSM 11.10-3 version 4.24.1)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST ETS 300 607-3 E10:2003
01-december-2003
'LJLWDOQLFHOLþQLWHOHNRPXQLNDFLMVNLVLVWHPID]D±6SHFLILNDFLMDVNODGQRVWL]D
PRELOQHSRVWDMH06±GHO$EVWUDNWQLSUHVNXãDOQLQL]$76WUHWMHSODVWL/
*60UD]OLþLFD
Digital cellular telecommunications system (Phase 2) (GSM); Mobile Station (MS)
conformance specification; Part 3: Layer 3 (L3) Abstract Test Suite (ATS) (GSM 11.10-3
version 4.24.1)
Ta slovenski standard je istoveten z: ETS 300 607-3 Edition 10
ICS:
33.070.50 Globalni sistem za mobilno Global System for Mobile
telekomunikacijo (GSM) Communication (GSM)
SIST ETS 300 607-3 E10:2003 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST ETS 300 607-3 E10:2003

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SIST ETS 300 607-3 E10:2003
EUROPEAN ETS 300 607-3
TELECOMMUNICATION April 1999
STANDARD Tenth Edition
Source: SMG Reference: RE/SMG-071110PR8-3
ICS: 33.020
Key words: Digital cellular telecommunications system, Global System for Mobile Communication (GSM)
R
GLOBAL SYSTEM FOR
MOBILE COMMUNICATIONS
Digital cellular telecommunications system (Phase 2);
Mobile Station (MS) conformance specification;
Part 3: Layer 3 (L3) Abstract Test Suite (ATS)
(GSM 11.10-3 version 4.24.1)
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.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 1999. All rights reserved.

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ETS 300 607-3 (GSM 11.10-3 version 4.24.1): April 1999
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 Standards Making Support Dept." at the address shown on the title page.

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SIST ETS 300 607-3 E10:2003
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ETS 300 607-3 (GSM 11.10-3 version 4.24.1): April 1999
Contents
Foreword .5
1 Scope .7
2 Normative references.7
3 Definitions and abbreviations .10
3.1 Definitions .10
3.2 Abbreviations .10
4 Test Suite Structure (TSS) .11
4.1 Test suite naming convention .11
4.2 Suite Overview.12
4.3 Test groups.12
4.3.1 Valid Behaviour tests (BV) .12
4.3.2 Invalid Behaviour/Inopportune Behaviour tests (BI-BO).12
4.4 Test Step Structure.13
4.4.1 Preambles .13
4.4.2 Postambles.13
5 Test Purposes (TP).13
5.1 TP and test case naming convention.13
6 Abstract test method and test configurations.13
6.1 Test system model.13
6.2 Test Method.14
Annex A (normative): Layer 3 Abstract Test Suite .15
A.1 The TTCN Graphical form (TTCN.GR) .15
A.2 The TTCN Machine Processable form (TTCN.MP) .15
Annex B (normative): Partial IXIT proforma .16
Introduction.16
B.1 Identification Summary.17
B.2 Abstract Test Suite Summary .17
B.3 Test Laboratory .17
B.3.1 Test Laboratory Identification.17
B.3.2 Accreditation status of the test service .18
B.3.3 Manager of Test Laboratory.18
B.3.4 Contact person of Test Laboratory .18
B.3.5 Means of Testing .19
B.3.6 Instructions for Completion.20
B.4 Client .21
B.4.1 Client Identification.21
B.4.2 Client Test Manager.21
B.4.3 Client Contact person .21
B.4.4 Test Facilities Required .22
B.5 System Under Test.23

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ETS 300 607-3 (GSM 11.10-3 version 4.24.1): April 1999
B.5.1 SUT Information. 23
B.5.2 Limitations of the SUT. 24
B.5.3 Environmental Conditions . 25
B.6 Ancillary Protocols . 26
B.6.1 Ancillary Protocols 1. 26
B.6.2 Ancillary Protocols 2. 26
B.7 Protocol Layer Information for L3 of Mobile Station.26
B.7.1 Information provided for test purposes by the MS supplier. 26
B.7.2 MMI information . 39
B.7.3 Test house specified parameters. 44
Annex C (normative): PCTR Proforma . 76
Annex D (normative): Enhanced Full Rate Abstract Test Suite. 77
D.1 The TTCN Graphical form (TTCN.GR) .77
D.2 The TTCN Machine Processable form (TTCN.MP) . 77
Annex E (informative): Cell Selection Abstract Test Suite. 78
E.1 The TTCN Graphical form (TTCN.GR) .78
E.2 The TTCN Machine Processable form (TTCN.MP) . 78
Annex F (informative): Dual band Abstract Test Suite . 79
F.1 The TTCN Graphical form (TTCN.GR) .79
F.2 The TTCN Machine Processable form (TTCN.MP) . 79
History. 80

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ETS 300 607-3 (GSM 11.10-3 version 4.24.1): April 1999
Foreword
This European Telecommunication Standard (ETS) has been produced by the Special Mobile Group
(SMG) of the European Telecommunications Standards Institute (ETSI).
This ETS describes the technical characteristics and methods of test for Mobile Stations (MSs), operating
in the 900 MHz and 1 800 MHz frequency band (GSM 900 and DCS 1 800) within the digital cellular
telecommunications system.
This ETS corresponds to GSM technical specification GSM 11.10-3 version 4.24.0.
This part of the ETS (Part 3), contains Tree and Tabular Combined Notation (TTCN) for Layer 3,
signalling for MS supporting Enhanced Full Rate Speech, and cell selection conformity specifications for
which Mobile Stations, within the digital cellular telecommunications system (Phase 2), are tested for
compliance.
The graphical form ATS
The electronic forms of the graphical representation (TTCN.GR format) corresponding to the ATS for
Layer 3 are contained in the Adobe Portable Document Format™ files L3-4n0.PDF (Layer 3), EF-4n0.PDF
(Enhanced Full Rate), CS-4n0.PDF (Cell Selection) and DB-4n0.PDF (Dual Band) which accompany this
ETS (Part 3) (these files are contained in archive 6073_ea.ZIP).
The machine processable ATS
The electronic forms of the machine processable files (TTCN.MP format) corresponding to the ATS for
Layer 3 are contained in the ASCII files L3-4o0.mp (Layer 3), EF-4o0.mp (Enhanced Full Rate),
CS-4o0.mp (Cell Selection) and DB-4o0.mp (Dual Band) which accompany this ETS (Part 3) (these files
are contained in archive 6073_ea.ZIP).
ETS 300 607 consists of three parts, which have the following ETS numbers and titles:
ETS 300 607-1 Digital cellular telecommunications system (Phase 2);
Mobile Station (MS) conformance specification;
Part 1: Conformance specification
Reference: GSM 11.10-1.
ETS 300 607-2 Digital cellular telecommunications system (Phase 2);
Mobile Station (MS) conformance specification;
Part 2: Protocol Implementation Conformance Statement (ICS)
proforma specification
Reference: GSM 11.10-2.
ETS 300 607-3 Digital cellular telecommunications system (Phase 1);
Mobile Station (MS) conformance specification;
Part 3: Layer 3 (L3) Abstract Test Suite (ATS)
Reference: GSM 11.10-3.
Transposition dates
Date of adoption of this ETS: 9 April 1999
Date of latest announcement of this ETS (doa): 31 July 1999
Date of latest publication of new National Standard
or endorsement of this ETS (dop/e): 31 January 2000
Date of withdrawal of any conflicting National Standard (dow): 31 January 2000

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ETS 300 607-3 (GSM 11.10-3 version 4.24.1): April 1999
1 Scope
This European Telecommunication Standard (ETS) specifies the Abstract Test Suite (ATS) and partial
IXIT proforma for the Network Layer (Layer 3) at the mobile radio interface of the GSM or DCS (Phase 2)
mobile stations (MS) conforming to the ETSs for the Radio Resource management, the Mobility
Management, the circuit-switched Call Control, the Supplementary Services and Short Message Services
for the digital cellular telecommunications systems (Phase 2).
The ISO standards for the methodology of conformance testing are used as the basis for the test
specifications.
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] ISO/IEC 9646-1: "Information Technology-OSI- Conformance Testing
Methodology and Framework, Part 1: General Concepts".
[2] ISO/IEC 9646-2: "Information Technology-OSI- Conformance Testing
Methodology and Framework, Part 2: Abstract Test Suite Specification".
[3] ISO/IEC 9646-3: "Information Technology-OSI- Conformance Testing
Methodology and Framework, Part 3: The Tree and Tabular Combined
Notation".
[4] ISO/IEC 9646-5: "Information Technology-OSI- Conformance Testing
Methodology and Framework, Part 5: Requirements on test laboratories and
clients for the conformance assessment process".
[5] ISO/IEC 8824: "Information Technology-OSI- Specification of Abstract Syntax
Notation One (ASN.1)".
[6] ISO/IEC 8825: "Information Technology-OSI- Specification of Basic Encoding
Rules for Abstract Syntax Notation One (ASN.1)".
[7] ITU-T Recommendation Q.773: "Specifications of Signalling System No.7;
Transaction capabilities formats and encoding".
[8] ETS 300 287: "Integrated Services Digital Network (ISDN); Signalling System
No.7, Transaction Capabilities Application Part (TCAP) version 2".
[9] ETS 300 406 (January 1995): "Methods for Testing and Specification (MTS);
Protocol and profile conformance testing specifications; Standardization
methodology".
[10] GSM 02.02 Version 4.2.2: "Digital cellular telecommunication system (Phase 2);
Bearer Services (BS) supported by a GSM Public Land Mobile Network
(PLMN)".
[11] GSM 02.03 Version 4.3.1: "Digital cellular telecommunication system (Phase 2);
Teleservices supported by a GSM Public Land Mobile Network (PLMN)".
[12] GSM 02.06 Version 4.5.2: "Digital cellular telecommunication system (Phase 2);
Types of Mobile Stations (MS)".
[13] GSM 02.07 Version 4.8.2: "Digital cellular telecommunication system (Phase 2);
Mobile Station (MS) features".

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[14] GSM 02.30 Version 4.13.0: "Digital cellular telecommunication system
(Phase 2); Man-Machine Interface (MMI) of the Mobile Station (MS)".
[15] GSM 03.03 Version 4.9.0: "Digital cellular telecommunication system (Phase 2);
Numbering, addressing and identification".
[16] GSM 03.09 Version 4.6.0: "Digital cellular telecommunications system
(Phase 2); Handover procedures".
[17] GSM 03.10 Version 4.3.1: "Digital cellular telecommunications system
(Phase 2); GSM Public Land Mobile Network (PLMN) connection types".
[18] GSM 03.11 Version 4.10.1: "Digital cellular telecommunication system
(Phase 2); Technical realization of supplementary services".
[19] GSM 03.12 Version 4.4.2: "Digital cellular telecommunications system
(Phase 2); Location registration procedures".
[20] GSM 03.14 Version 4.1.1: "Digital cellular telecommunications system
(Phase 2); Support of Dual Tone Multi-Frequency signalling (DTMF) via the
GSM system".
[21] GSM 03.22 Version 4.11.0: "Digital cellular telecommunication system
(Phase 2); Functions related to Mobile Station (MS) in idle mode".
[22] GSM 03.40 Version 4.13.0: "Digital cellular telecommunication system
(Phase 2); Technical realization of the Short Message Service (SMS) Point to
Point (PP)".
[23] GSM 03.41 Version 4.11.0: "Digital cellular telecommunication system
(Phase 2); Technical realization of Short Message Service Cell Broadcast
(SMSCB)".
[24] GSM 04.01 Version 4.0.4: "Digital cellular telecommunications system
(Phase 2); Mobile Station - Base Station System (MS - BSS) interface General
aspects and principles".
[25] GSM 04.03 Version 4.1.1: "Digital cellular telecommunications system
(Phase 2); Mobile Station - Base Station System (MS - BSS) interface Channel
structures and access capabilities".
[26] GSM 04.04 Version 4.0.4: "Digital cellular telecommunication system (Phase 2);
layer 1 General requirements".
[27] GSM 04.05 Version 4.0.3: "Digital cellular telecommunication system (Phase 2);
Data Link (DL) layer General aspects".
[28] GSM 04.06 Version 4.4.0: "Digital cellular telecommunication system (Phase 2);
Mobile Station - Base Station System (MS - BSS) interface Data Link (DL) layer
specification".
[29] GSM 04.07 Version 4.3.1: "Digital cellular telecommunication system (Phase 2);
Mobile radio interface signalling layer 3 General aspects".
[30] GSM 04.08 Version 4.22.1: "Digital cellular telecommunication system
(Phase 2); Mobile radio interface layer 3 specification".
[31] GSM 04.10 Version 4.10.1: "Digital cellular telecommunication system
(Phase 2); Mobile radio interface layer 3 Supplementary services specification
General aspects".

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[32] GSM 04.11 Version 4.10.0: "Digital cellular telecommunication system
(Phase 2); Point-to-Point (PP) Short Message Service (SMS) support on mobile
radio interface".
[33] GSM 04.12 Version 4.6.0: "Digital cellular telecommunication system (Phase 2);
Short Message Service Cell Broadcast (SMSCB) support on the mobile radio
interface".
[34] GSM 04.80 Version 4.11.1: "Digital cellular telecommunication system
(Phase 2); Mobile radio interface layer 3 supplementary services specification;
Formats and coding".
[35] GSM 04.81 Version 4.4.1: "Digital cellular telecommunication system (Phase 2);
Line identification supplementary services - Stage 3".
[36] GSM 04.82 Version 4.9.1: "Digital cellular telecommunication system (Phase 2);
Call Forwarding (CF) supplementary services - Stage 3".
[37] GSM 04.83 Version 4.6.1: "Digital cellular telecommunication system (Phase 2);
Call Waiting (CW) and Call Hold (HOLD) supplementary services - Stage 3".
[38] GSM 04.84 Version 4.3.2: "Digital cellular telecommunication system (Phase 2);
MultiParty (MPTY) supplementary services - Stage 3".
[39] GSM 04.85 Version 4.1.1: "Digital cellular telecommunications system
(Phase 2); Closed User Group (CUG) supplementary services - Stage 3".
[40] GSM 04.86 Version 4.5.2: "Digital cellular telecommunication system (Phase 2);
Advice of Charge (AoC) supplementary services - Stage 3".
[41] GSM 04.88 Version 4.7.1: "Digital cellular telecommunication system (Phase 2);
Call Barring (CB) supplementary services - Stage 3".
[42] GSM 04.90 Version 4.1.1: "Digital cellular telecommunication system (Phase 2);
Unstructured supplementary services operation - Stage 3".
[43] GSM 05.01 Version 4.6.0: "Digital cellular telecommunications system
(Phase 2); Physical layer on the radio path General description".
[44] GSM 05.02 Version 4.9.1: "Digital cellular telecommunication system (Phase 2);
Multiplexing and multiple access on the radio path".
[45] GSM 05.03 Version 4.5.1: "Digital cellular telecommunication system (Phase 2);
Channel coding".
[46] GSM 05.04 Version 4.0.3: "Digital cellular telecommunication system (Phase 2);
Modulation".
[47] GSM 05.05 Version 4.22.1: "Digital cellular telecommunication system (Phase
2); Radio transmission and reception".
[48] GSM 05.08 Version 4.21.1: "Digital cellular telecommunication system
(Phase 2); Radio subsystem link control".
[49] GSM 05.10 Version 4.9.0: "Digital cellular telecommunication system (Phase 2);
Radio subsystem synchronisation".
[50] GSM 07.01 Version 4.10.0: "Digital cellular telecommunication system
(Phase 2); General on Terminal Adaptation Functions (TAF) for Mobile Stations
(MS)".

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[51] GSM 08.08 Version 4.12.1: "Digital cellular telecommunications system
(Phase 2); Mobile-services Switching Centre - Base Station System (MSC -
BSS) interface Layer 3 specification".
[52] GSM 08.58 Version 4.9.0: "Digital cellular telecommunications system
(Phase 2); Base Station Controller - Base Transceiver Station (BSC - BTS)
interface Layer 3 specification".
[53] GSM 09.02 Version 4.18.0: "Digital cellular telecommunication system
(Phase 2); Mobile Application Part (MAP) specification".
[54] GSM 11.10-1 Version 4.24.0: "Digital cellular telecommunications system
(Phase 2); Mobile Station (MS) conformance specification; Part 1: Conformance
specification".
[55] GSM 11.10-2 Version 4.15.0: "Digital cellular telecommunications system
(Phase 2); Mobile Station (MS) conformance specification; Part 2: Protocol
Implementation Conformance Statement (PICS) Proforma specification".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of this ETS, the following definitions apply:
Abstract Test Suite (ATS): Refer to ISO/IEC 9646-1 [1].
Implementation Under Test (IUT): Refer to ISO/IEC 9646-1 [1].
Partial Protocol Implementation eXtra Information for Testing (IXIT): Refer to ISO/IEC 9646-1 [1].
Point of Controls and Observations (PCO): Refer to ISO/IEC 9646-1 [1].
Protocol Implementation Conformance Statement (ICS): Refer to ISO/IEC 9646-1 [1].
System Under Test (SUT): Refer to ISO/IEC 9646-1 [1].
3.2 Abbreviations
For the purposes of this ETS, the following abbreviations apply:
ATS Abstract Test Suite
BI Invalid Behaviour tests
BO Inopportune Behaviour tests
BV Valid Behaviour tests
CA CApability tests
EDP-N Event Detection Point - Notification
EDP-R Event Detection Point - Request
ETS European Telecommunication Standard
FE Functional Entity
FSM Finite State Machine
ICS Implementation Conformance Statement
IUT Implementation Under Test
IXIT Implementation eXtra Information for Testing
PDU Protocol Data Unit
SUT System Under Test
TP Test Purpose
TSS Test Suite Structure
Further abbreviations used within GSM related ETS may be found in ETR 100.
Abbreviations for test case group names may be found in figure 1 and 2.

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4 Test Suite Structure (TSS)
4.1 Test suite naming convention
The test group identifier for each group and subgroup is built according to the scheme in figure 1.
Identifier: L3
= category: BIT BIT, Basic Interconnection tests (not used)
CA CA, Capability tests (not used)
BV BV, Valid Behaviour tests
BI-BOBI and BO, Invalid and Inopportune Behaviour tests
= group: IN Initial tests
ID Idle mode tests
RR Radio Resource management
MM Mobility Management
CC Call Control
SP Structured Procedures
SS Supplementary services
LLF Lower Layer Failures
UUE Unknown, Unforeseen or erroneous Elements
= group: CR Channel Request
AT IMSI detach and IMSI attach
SMT Sequenced MM / CC message transfer
EC Establishment Cause
IA Immediate assignment
PG Test of paging
MR Test of measurement report
ASS Test of the channel
HO Test of handover
FR Test of frequency redefinition
CMM Test of the channel mode modify procedure
CY Test of ciphering mode setting
CM Test of classmark
CHR Test of channel release
START Test of starting time
IDAU Identification and authentication
LU Location updating
CON MM connection
CCSMO State Machine Verification, Mobile Originating Call
CCSMT State Machine Verification, Mobile Terminating Call
SMICF State machine verification, In Call Functions
CRE Call Re-establishment
UUS User to user signalling
UPD Unknown protocol discriminator
TIS TI and skip indicator
UMT Undefined or unexpected message type
UIE Unforeseen information elements in the non-imperative
NMIE Non-semantical mandatory IE errors
CNR Unknown IE, comprehension not required
SB Spare bits

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ETS 300 607-3 (GSM 11.10-3 version 4.24.1): April 1999
= group: AC Handover / successful / active call
CUE Handover / successful / call under establishment
FSY Handover / successful / active call / finely synchronized
PRS Pre-synchronized handovers
PRF Protocol failures
ACC Location updating / accepted
REJ Location updating / rejected
ABN Location updating / abnormal cases
REL Location updating / release
PER Location updating / periodic
HPERLocation updating / periodic HPLMN search
IWAT Location updating / interworking of attach and periodic
EST MM connection / establishment
EXP MM connection / expiry
NWAB MM connection / abortion by the network
FRQPMM connection / follow-on request pending
U0 Mobile Originating Call U0 State
U0.1 Mobile Originating Call U0.1 MM Connection pending
U1 Mobile Originating Call U1 State
U3 Mobile Originating Call U3 State
U4 Mobile Originating Call U4 State
U10 Mobile Originating Call U10 State
U11 Mobile Originating Call U11 State
U12 Mobile Originating Call U12 State
U19 Mobile Originating Call U19 State
U0 Mobile Terminating Call U0 State
U6 Mobile Terminating Call U6 State
U9 Mobile Terminating Call U9 State
U7 Mobile Terminating Call U7 State
U8 Mobile Terminating Call U8 State
DTMFState machine verification, In Call Functions / transfer
CHC State machine verification, In Call Functions /
TICM State machine verification, In Call Functions / in-
OICM State machine verification, In Call Functions / in-
Figure 1: Test group identifier naming convention scheme
4.2 Suite Overview
Figure 2 shows the structure of the test suites for L3.
L3 ATS
BV BI/O
IN ID RR MM CC SP SS SMS LLF UUE
Figure 2: Test suite structure of the L3 tests
4.3 Test groups
4.3.1 Valid Behaviour tests (BV)
Predefined state transitions are considered as valid. The test purposes in the valid behaviour test
subgroup cover the verification of the normal and exceptional procedures of the various Finite State
Machines (FSMs), i.e. a valid behaviour test is a test where the message sequence and the message
contents are considered as valid.
4.3.2 Invalid Behaviour/Inopportune Behaviour tests (BI-BO)
This test sub group verifies that the Implementation Under Test (IUT) is able to react properly having
received an invalid Protocol Data Unit (PDU) or in the case an inopportune protocol event occurs. An
invalid PDU is defined as a syntactically incorrect message. An inopportune event is syntactically correct
but occurs when it is not expected, e.g. a correctly coded operation is received in a wrong state (the IUT
may respond Error UnexpectedComponentSequence).

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4.4 Test Step Structure
4.4.1 Preambles
The preamble is defined for each test purpose.
4.4.2 Postambles
After each test case the IUT shall be brought to the state as defined in the postamble for each test
purpose.
5 Test Purposes (TP)
For each conformance requirement a Test Purpose (TP) is defined. The test purposes are specified in the
ATS Dynamic part (annex A).
5.1 TP and test case naming convention
In order clearly to map the conformance requirements specified in the prETS 300 607-1 and TTCN test
cases in the ATS, the section numbers in the prETS 300 607-1 are used as test case names.
The identifier of each TP is identical to the name of the implemented TTCN test case.
"Test Purpose Identifier" = "Test Case Name" = TPI
...