ETSI TS 186 018-3 V2.1.1 (2009-07)

Technical Committee for IMS Network Testing (INT); Malicious Communication Identification (MCID) Conformance Testing; Part 3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification

DTS/INT-00004-3

General Information

• Status: Published
• Publication Date: 19-Jul-2009
• Technical Committee: INT - Core Network and Interoperability Testing
• Current Stage: 12 - Completion
• Due Date: 23-Jul-2009
• Completion Date: 20-Jul-2009

Standards Content (Sample)

ETSI TS 186 018-3 V2.1.1 (2009-07)
Technical Specification

Technical Committee for IMS Network Testing (INT);
Malicious Communication Identification (MCID)
Conformance Testing;
Part 3: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT)
proforma specification


�

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2 ETSI TS 186 018-3 V2.1.1 (2009-07)



Reference
DTS/INT-00004-3
Keywords
ATS, IMS, MCID, PIXIT, SIP, testing, TTCN
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3 ETSI TS 186 018-3 V2.1.1 (2009-07)
Contents
Intellectual Property Rights . 5
Foreword . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 7
2.2 Informative references . 8
3 Definitions and abbreviations . 8
3.1 Definitions . 8
3.2 Abbreviations . 8
4 Abstract Test Method (ATM) . 9
4.1 Network architecture . 9
4.2 Protocol architecture. 10
4.3 Test architecture . 11
4.3.1 Test configuration . 11
4.3.1.1 Configuration using Gm interface . 11
4.3.1.2 Configuration using ISC interface . 11
4.3.1.3 Configuration using Mw and Ic interfaces . 12
4.3.2 Test system architecture . 12
4.3.2.1 General . 12
4.3.2.2 Structure . 12
4.3.2.3 Interaction between TTCN-3 Executable (TE) and SUT Adapter (SA) . 13
4.3.2.3.1 Sending and receiving SIP/IMS messages . 13
4.3.2.3.2 Security and messages compression feature . 14
4.3.2.3.3 Additional SA constraints . 14
4.3.2.4 Encoding/Decoding requirements . 14
4.3.2.4.1 Encoding/Decoding System requirements for basic SIP messages/headers . 14
4.3.2.5 Platform adaptation requirements . 15
5 The ATS development process . 16
5.1 Requirements and Test Purposes . 16
5.2 ATS structure . 16
5.2.1 Test case grouping . 16
5.2.2 Test case identifiers . 16
5.3 ATS specification framework . 17
5.3.1 ATS Library . 17
5.3.2 Use of TTCN-3 . 18
5.3.2.1 General . 18
5.3.2.2 TTCN-3 naming conventions . 18
5.3.2.3 Additional TTCN-3 IMS/SIP naming convention . 19
5.3.2.4 Additional concepts and conventions . 20
5.3.2.5 PICS information . 20
5.3.2.6 Test Suite documentation . 20
5.4 ATS archive . 21
Annex A (normative): Partial PIXIT proforma . 22
A.1 Introduction . 22
A.2 PIXIT items . 22
A.2.1 SIP-related PIXIT . 22
A.2.2 IMS-related PIXIT . 23
Annex B (informative): TTCN-3 library modules . 27
B.1 Electronic annex, zip file with TTCN-3 code . 27
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4 ETSI TS 186 018-3 V2.1.1 (2009-07)
Annex C (informative): Bibliography . 28
History . 29

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5 ETSI TS 186 018-3 V2.1.1 (2009-07)
Intellectual Property Rights
IPRs essential or potentially essential to the present document may have been declared to ETSI. The information
pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found
in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in
respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web
server (http://webapp.etsi.org/IPR/home.asp).
Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee
can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web
server) which are, or may be, or may become, essential to the present document.
Foreword
This Technical Specification (TS) has been produced by IMS Network Testing (INT).
The present document is part 3 of a multi-part deliverable covering Malicious Communication IDentification (MCID),
as identified below:
Part 1: "Protocol Implementation Conformance Statement (PICS) proforma";
Part 2: "Test Suite Structure and Test Purposes (TSS&TP)";
Part 3: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing
(PIXIT) proforma specification".
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6 ETSI TS 186 018-3 V2.1.1 (2009-07)
1 Scope
The present document specifies the Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information
for Testing (PIXIT) proforma based on the Test Suite Structure and Test Purposes defined in TS 186 018-2 [3].
The TSS&TP have been developed to test the Malicious Communication Identification (MCID) PSTN/ISDN simulation
services.
The test notation used in the ATS is TTCN-3 (see ES 201 873-1 [9]).
The following test specification- and design considerations can be found in the body of the present document:
• the overall test suite structure;
• the testing architecture;
• the test methods and port definitions;
• the test configurations;
• the design principles, assumptions, and used interfaces to the TTCN-3 tester (System Simulator);
• TTCN styles and conventions;
• the partial PIXIT proforma;
• the modules containing the TTCN-3 ATS.
Annex A provides the Partial Implementation Extra Information for Testing (PIXIT) Proforma of the ATS.
Annex B provides the Testing and Test Control Notation (TTCN-3) part of the ATS.
2 References
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• Non-specific reference may be made only to a complete document or a part thereof and only in the following
cases:
- if it is accepted that it will be possible to use all future changes of the referenced document for the
purposes of the referring document;
- for informative references.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee
their long term validity.
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7 ETSI TS 186 018-3 V2.1.1 (2009-07)
2.1 Normative references
The following referenced documents are indispensable for the application of the present document. For dated
references, only the edition cited applies. For non-specific references, the latest edition of the referenced document
(including any amendments) applies.
[1] ETSI TS 183 016: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); PSTN/ISDN simulation services; Malicious Communication
Identification (MCID); Protocol specification".
[2] ETSI TS 186 018-1: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); PSTN/ISDN simulation services; Malicious Communication
Identification (MCID); Part 1: Protocol Implementation Conformance Statement (PICS)".
[3] ETSI TS 186 018-2: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); PSTN/ISDN simulation services; Malicious Communication
Identification (MCID); Part 2: Test Suite Structure and Test Purposes (TSS&TP)".
[4] IETF RFC 3261 (2002): "SIP: Session Initiation Protocol".
[5] ISO/IEC 9646-1: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 1: General concepts".
[7] ISO/IEC 9646-7: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 7: Implementation Conformance Statements".
[9] ETSI ES 201 873-1 (V3.4.1): "Methods for Testing and Specification (MTS); The Testing and
Test Control Notation version 3; Part 1: TTCN-3 Core Language".
[10] ETSI ES 201 873-2: "Methods for Testing and Specification (MTS); The Testing and Test Control
Notation version 3; Part 2: TTCN-3 Tabular presentation Format (TFT)".
[11] ETSI ES 201 873-5: "Methods for Testing and Specification (MTS); The Testing and Test Control
Notation version 3; Part 5: TTCN-3 Runtime Interface (TRI)".
[12] ETSI ES 201 873-6: "Methods for Testing and Specification (MTS); The Testing and Test Control
Notation version 3; Part 6: TTCN-3 Control Interface (TCI)".
[13] ETSI TS 102 027-3 (V3.1.1): "Methods for Testing and Specification (MTS); Conformance Test
Specification for SIP (IETF RFC 3261); Part 3: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT) proforma".
[14] ETSI TS 102 351 (V2.1.1): "Methods for Testing and Specification (MTS); Internet Protocol
Testing (IPT); IPv6 Testing: Methodology and Framework".
[15] ETSI TS 186 005-2: " Telecommunications and Internet Converged Services and Protocols for
Advanced Networking (TISPAN); Terminating Identification Presentation (TIP) and Terminating
Identification Restriction (TIR); Part 2: Test Suite Structure and Test Purposes (TSS and TP)".
[16] ETSI TS 186 016-2: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); PSTN/ISDN simulation services; Closed User Group (CUG);
Part 2: Test Suite Structure and Test Purposes (TSS&TP)".
[17] ETSI TS 186 017-2: "Telecommunications and Internet converged Services and Protocols for
Advanced Networking (TISPAN); PSTN/ISDN simulation services; Anonymous Communication
Rejection (ACR) and Communication Barring (CB); Part 2: Test Suite Structure and Test Purposes
(TSS&TP)".
[18] IETF RFC 2617: "HTTP Authentication: Basic and Digest Access Authentication".
[19] IETF RFC 1321: "The MD5 Message-Digest Algorithm".
[20] IETF RFC 3455: "Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP)
for the 3rd-Generation Partnership Project (3GPP)".
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8 ETSI TS 186 018-3 V2.1.1 (2009-07)
[21] IETF RFC 4028: "Session Timers in the Session Initiation Protocol (SIP)".
2.2 Informative references
The following referenced documents are not essential to the use of the present document but they assist the user with
regard to a particular subject area. For non-specific references, the latest version of the referenced document (including
any amendments) applies.
[i.1] ETSI EG 202 568: "Methods for Testing and Specification (MTS); Internet Protocol Testing
(IPT); Testing: Methodology and Framework".
[i.2] ETSI TS 102 587-2: "Electromagnetic compatibility and Radio spectrum Matters (ERM);
Conformance testing for the Peer-to-Peer Digital Private Mobile Radio; Part 2: Test Suite
Structure and Test Purposes (TSS&TP) specification".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the terms and definitions given in ISO/IEC 9646-7 [7], TS 102 587-2 [i.2]
and the following apply:
abstract test case: Refer to ISO/IEC 9646-1 [5].
Abstract Test Method (ATM): Refer to ISO/IEC 9646-1 [5].
Abstract Test Suite (ATS): Refer to ISO/IEC 9646-1 [5].
Implementation Under Test (IUT): Refer to ISO/IEC 9646-1 [5].
Lower Tester (LT): Refer to ISO/IEC 9646-1 [5].
Test Purpose (TP): Refer to ISO/IEC 9646-1 [5].
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in ISO/IEC 9646-1 [5], ISO/IEC 9646-7 [7] and the
following apply:
NOTE: Abbreviations have been used both in the present document and in the TTCN-3 library modules
(see annex B).
ACK SIP message like INVITE, REGISTER
ACR Anonymous Communication Rejection
AS Application Server
ATM Abstract Test Method
ATS Abstract Test Suite
CB Communication Barring
CSCF Call Session Control Function
CUG Closed User Group
EDS Encoding/Decoding System
ETS Executable Test Suite
HTML HyperText Markup Language
IBCF Interconnection Border Control Function
ICB Incoming Communication Barring
I-CSCF Interrogating CSCF
ICSCF Interrogating CSCF
IMS IP Multimedia Subsystem
INT IMS Network Testing
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9 ETSI TS 186 018-3 V2.1.1 (2009-07)
IP Internet Protocol
IPV IP Version
ISC interface between SUT and AS
ISDN Integrated Services Digital Network
IUT Implementation Under Test
LAN Local Area Network
LT Lower Tester
LWS Linear White Spaces
MCID Malicious Communication Identification
OCB Outgoing Communication Barring
PA Platform Adapter
PCO Point of Control and Observation
P-CSCF Proxy CSCF
PCSCF Proxy CSCF
PICS Protocol Implementation Conformance Statement
PIXIT Partial Protocol Implementation Extra Information for Testing
PSTN Public Switched Telephone Network
PTC Parallel Test Component
SA SUT Adapter
S-CSCF Serving CSCF
SDP Session Description Protocol
SIP Session Initiation Protocol
SS Supplementary Services
SUT System under Test
T3RTS TTCN 3 Runtime System
TC Test Case
TCI TTCN-3 Control Interface
TCP check
TE TTCN 3 Executable
TIP Terminating Identification Presentation
TIR Terminating Identification Restriction
TL Test Logging
TM Test Management
TP Test Purpose
TRI TTCN-3 Runtime Interface
TS Test System
TSI Transmission Control Protocol
TSS Test Suite Structure
TTCN Testing and Test Control Notation
TTCN-3 Testing and Test Control Notation version 3
UDP User Datagram Protocol
UE User Equipment
XML eXtensible Markup Language
4 Abstract Test Method (ATM)
4.1 Network architecture
The SUT is assumed as a complete IMS core network and contains the following components: P-CSCF, I/S-CSCF,
E-CSCF and IBCF. As illustrated in the following figure the PCOs for the communication between the systems are Gm,
Mw, Ic and Isc. Each component can play role of SUT.
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10 ETSI TS 186 018-3 V2.1.1 (2009-07)
AS
IMSx
Isc
Mw
UE
        IMS
Gm
IMSy
Ic
SIP protocol

Figure 1: SUT test interface
4.2 Protocol architecture
The Implementation Under Test (IUT) for which this test case specification applies consists of the SIP protocol
(see figure 2).
SUT IMS CN
SIP/IMS Extension

SIP RFC 3261 [4]

Compression algorithms (2)
UDP TCP
Security Algorithms (2)
IPV4/IPV6 (1)
(LAN)

Figure 2: SIP protocol architecture
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11 ETSI TS 186 018-3 V2.1.1 (2009-07)
4.3 Test architecture
The target SUT to be covered by the test purposes of TS 186 018-2 [3] address the IMS functional entities that are
accessible via the following interfaces: Gm, Mw, Ic and ISC.
This clause introduces the test configurations that have been used for the test purpose definitions. Depending on the
specific configuration the Test System (TS) simulates the behaviour of the UE or another IMS communicating with the
SUT.
Figures 3 to 7 provides the different configuration in detail. The test configuration is specified in the context of TTCN-3
functions (e.g. f_cf_1UeUp). The letters "P", "S", "I" and "B" etc. indicate the CSCFs within the SUT or TS. If
applicable used identifiers on user profiles (see clause 5.3.2.4) have also been added in the figures
(e.g. "PCSCFwithHomeUE" corresponds to TTCN-3 constant c_userProfile_PCSCFwithHomeUE).
4.3.1 Test configuration
4.3.1.1 Configuration using Gm interface
The Gm interface is located between UE and IMS.
PCPCSCSCFFwwithithHHomomeUeUEE
gmgm
UE1UE1 SUTSUT IMSIMS
ueue11homhomee
PP

Figure 3: Test configuration with CF_1Ue
UE1atSUUE1atSUTThhoommee
UE1UE1
gmgm
UE3atSUUE3atSUTThhoommee
IMS SIMS SUUTT
ue1homue1homee
gmgm
UE3UE3
ue3homue3homee
PP

Figure 4: Test configuration with CF_2Ue
4.3.1.2 Configuration using ISC interface
The ISC interface provides an access to the AS.
ASAS
AS SAS SUUTT
isiscc
SS
SSCCSCFSCFwwithithHHomomeUEeUE
IMIMSS
ue1ue1homhomee

Figure 5: Test configuration with CF_1Scscf
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12 ETSI TS 186 018-3 V2.1.1 (2009-07)
ASAS
ASAS
isiscc
UE1atSUE1atSUUTThhoommee
UEUE11
SS
gmgm
UE2atSUE2atSUUTThhoommee
IMS SIMS SUUTT
ueue11homhomee
gmgm
UEUE22
ueue22homhomee
PP

Figure 6: Test configuration with CF_1As2Ue
4.3.1.3 Configuration using Mw and Ic interfaces
The Mw or Ic interface is located between two different IMS, e.g. due to at least one user visiting a network outside of
the home network.
ICSCFICSCFwwithHomithHomeUEeUE IBIBCFCFwiwithHomthHomeeUEUE
mwmw icic
UEUE II BB UEUE
IMSIMS T TSS IMS SUIMS SUTT IMS TSIMS TS
uehuehomomee uehuehomomee

Figure 7: Test configuration with CF_1Scscf1Ibcf
4.3.2 Test system architecture
4.3.2.1 General
Test systems that implement this ATS shall conform to the requirements as defined in this clause.
4.3.2.2 Structure
An abstract architecture for a Test System (TS) implementing a TTCN-3 ATS is displayed in figure 4 and also stated in
ES 201 873-5 [11].
Test Management (TM)
Test Control (TC) Test Logging (TL)

TCI



TTCN-3 Executable (TE)
TTCN-3 Runtime System (T3RTS)
  Executable Test Suite (ETS)
Encoding/Decoding System


TRI



SUT Adapter (SA) Platform Adapter (PA)

Figure 8: Abstract Test System Architecture
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13 ETSI TS 186 018-3 V2.1.1 (2009-07)
A TS has two interfaces, the TTCN-3 Control Interface (TCI) and the TTCN-3 Runtime Interface (TRI), which specify
the interface between Test Management (TM) and TTCN-3 Executable (TE) entities, and TE, SUT Adapter (SA) and
Platform Adapter (PA) entities, respectively. Out of these two interfaces the TRI has been standardized in
ES 201 873-5 [11], whereas the specification and implementation of the TCI is in ES 201 873-6 [12].
The part of TS that deals with interpretation and execution of TTCN-3 modules, i.e. the Executable Test Suite (ETS), is
shown as part of the TTCN-3 Executable (TE). This ETS corresponds either to the executable code produced by a
TTCN-3 compiler or a TTCN-3 interpreter from the TTCN-3 ATS in a TS implementation. The remaining part of the
TS, which deals with any aspects that cannot be concluded from information being present in the TTCN-3 ATS alone,
can be decomposed into Test Management (TM), SUT Adapter (SA) and Platform Adapter (PA) entities. In general,
these entities cover a TS user interface, test execution control, test event logging, communication of test data with the
SUT, and timer implementation.
The part of SA used for SIP message transfer shall implement the TRI adaptation as well as the SIP transport protocol
architecture described in clause 4.2.
The Encoding/Decoding System (EDS) entity, as far as applied to SIP messages, with the TE and Test Logging (TL)
entity within the TM shall comply with the conventions defined in clause 4.3.2 of TS 102 027-3 [14].
4.3.2.3 Interaction between TTCN-3 Executable (TE) and SUT Adapter (SA)
4.3.2.3.1 Sending and receiving SIP/IMS messages
Before starting a test case, the SA shall provide the transport of SIP messages by establishing appropriate connections
on the lower layers (see figure 2).
In order to forward messages received in the SA to the test suite and to send them to the SUT a clear and unique
association between the TTCN-3 TSI ports and the real IP and port addresses used by the SUT is needed during test
execution. The SA retrieves this information via values of TTCN-3 module parameters, i.e. PIXITs, and mappings to
TSI ports, i.e. triMap operation invocations. TSI port names are the main source for the relating TSI ports with SUT IP
addresses and ports.
Table 1 provides the relationships for TSI ports and SUT IP addresses and ports.
Table 1: TSI port mappings
TSI port SUT (IP address, Port Id) Test system (IP address, Port id)
UE1 PX_IMS_SUT_PCSCF1_IPADDR, PX_IMS_TS_UE1_IPADDR,
PX_IMS_SUT_PCSCF1_PORT PX_IMS_TS_UE1_PORT
UE2 PX_IMS_SUT_PCSCF2_IPADDR, PX_IMS_TS_UE2_IPADDR,
PX_IMS_SUT_PCSCF2_PORT PX_IMS_TS_UE2_PORT
UE3 PX_IMS_SUT_PCSCF3_IPADDR, PX_IMS_TS_UE3_IPADDR,
PX_IMS_SUT_PCSCF3_PORT PX_IMS_TS_UE3_PORT
PCSCF PX_IMS_SUT_UE_IPADDR, PX_IMS_TS_PCSCF_IPADDR,
PX_IMS_SUT_UE_PORT PX_IMS_TS_PCSCF_PORT
SCSCF PX_IMS_SUT_AS_IPADDR, PX_IMS_TS_SCSCF_IPADDR,
PX_IMS_SUT_AS_PORT PX_IMS_TS_SCSCF_PORT
MW_I1 PX_IMS_SUT_ICSCF_IPADDR, PX_IMS_TS_SCSCF_IPADDR,
PX_IMS_SUT_ICSCF_PORT PX_IMS_TS_SCSCF_PORT
IC1 PX_IMS_SUT_IBCF_IPADDR, PX_IMS_TS_IBCF1_IPADDR,
PX_IMS_SUT_IBCF_PORT PX_IMS_TS_IBCF1_PORT
AS1 PX_IMS_SUT_SCSCF_IPADDR, PX_IMS_TS_AS1_IPADDR,
PX_IMS_SUT_ SCSCF_PORT PX_IMS_TS_AS1_PORT

NOTE 1: TSI portnames are defined in AtsIms_TestSystem module as part of the ImsComponent type. Module
parameters for the address information are defined in LibIms_PIXIT module (see clause 5.3.1).
NOTE 2: For each test configuration listed above a TTCN-3 configuration functions has been implemented with the
required mapping and unmapping statements (see module AtsIms_TestConfiguration), e.g. f_cf_1Ueup
map one UE1 related port of the test system to the SUT.
Figure 9 illustrates the interconnection of TS and SUT in terms of signalling message associations.
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14 ETSI TS 186 018-3 V2.1.1 (2009-07)
TSTS
asas11
portport::sippsipp
portport::AS1AS1
poporrtt::ssiipppp
ppoorrt:sit:sipppp
ueueue111
pppooorrrt:Mt:Mt:MWWW___I1I1I1
portportport:::UE1UE1UE1
mwmwii11
SUTSUT
ueueue222
pppooorrrt:It:It:ICCC111
portportport:::UE2UE2UE2
IMSIMS
icic11
ueueue333
portportport:::UE3UE3UE3
portport::sippsipp
SUTSUT
ssscscfcscfcscf
popoporrrttt:::SSSCSCFCSCFCSCF
ASAS
port:port:sippsipp
SUTSUT
pcscfpcscfpcscf
pppooorrrttt:::PCPCPCSCSCSCFFF
UEUE

Figure 9: Abstract port association
4.3.2.3.2 Security and messages compression feature
Security transport layer, and signalling compression may be used transparently to the ATS.
4.3.2.3.3 Additional SA constraints
In order to execute this test suite the SA should support:
• communication channel handling (at least UDP and possibly also TCP);
• IPv4 transport.
4.3.2.4 Encoding/Decoding requirements
4.3.2.4.1 Encoding/Decoding System requirements for basic SIP messages/headers
SIP is a text-based protocol t
...