SIST-TS TS 101 889-3 V1.1.1:2004

Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 3; Technology Compliance Specification; TIPHON profile for ITU-T H.248; Part 3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification

Design of Abstract Test Suite and PIXIT proforma for an H.248 protocol implementation in an physically decomposed multimedia gateway for the H.323 environment

Harmonizacija telekomunikacij in internetnega protokola prek omrežij (TIPHON), 3. izdaja - Specifikacija tehnološke ustreznosti - Profil TIPHON za ITU-T H.248 - 3. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) - Proforma specifikacija

General Information

• Status: Published
• Publication Date: 31-Mar-2004
• ICS: 33.020 - Telecommunications in general
• Technical Committee: SPN - Services and Protocols for Networks
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 01-Apr-2004
• Due Date: 01-Apr-2004
• Completion Date: 01-Apr-2004
• Ref Project: ETSI TS 101 889-3 V1.1.1 (2003-01) - Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON) Release 3; Technology Compliance Specification; TIPHON profile for ITU-T H.248; Part 3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification

Standards Content (Sample)

SLOVENSKI STANDARD
SIST-TS TS 101 889-3 V1.1.1:2004
01-april-2004
Harmonizacija telekomunikacij in internetnega protokola prek omrežij (TIPHON), 3.
izdaja - Specifikacija tehnološke ustreznosti - Profil TIPHON za ITU-T H.248 - 3. del:
Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje
izvedbe protokola (PIXIT) - Proforma specifikacija
Telecommunications and Internet Protocol Harmonization Over Networks (TIPHON)
Release 3; Technology Compliance Specification; TIPHON profile for ITU-T H.248; Part
3: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for
Testing (PIXIT) proforma specification
Ta slovenski standard je istoveten z: TS 101 889-3 Version 1.1.1
ICS:
33.020 Telekomunikacije na splošno Telecommunications in
general
SIST-TS TS 101 889-3 V1.1.1:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS TS 101 889-3 V1.1.1:2004

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SIST-TS TS 101 889-3 V1.1.1:2004

ETSI TS 101 889-3 V1.1.1 (2003-01)
Technical Specification

Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON) Release 3;
Technology Compliance Specification;
TIPHON profile for ITU-T H.248;
Part 3: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT)
proforma specification



�

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SIST-TS TS 101 889-3 V1.1.1:2004
 2 ETSI TS 101 889-3 V1.1.1 (2003-01)



Reference
DTS/TIPHON-06017-3
Keywords
ATS, H.248, IP, PIXIT, supplementary service,
telephony, testing, voice, VoIP
ETSI
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The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2003.
All rights reserved.

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DECT , PLUGTESTS and UMTS are Trade Marks of ETSI registered for the benefit of its Members.
TM
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ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 3 ETSI TS 101 889-3 V1.1.1 (2003-01)
Contents
Intellectual Property Rights.5
Foreword.5
1 Scope.6
2 References.6
3 Definitions and abbreviations.7
3.1 Definitions.7
3.2 Abbreviations.7
4 Abstract Test Method (ATM).8
4.1 Network architecture.8
4.2 Protocol architecture.8
4.3 Test architecture.9
4.4 Primitives at TR_PCO.10
5 Untestable Test Purposes (TP) .10
6 ATS conventions.11
6.1 Naming conventions.11
6.1.1 Declarations part.11
6.1.1.1 General.11
6.1.1.2 Test Suite Operations definition.11
6.1.1.3 Test Suite Parameter declarations .11
6.1.1.4 Test Case Selection expression definition.11
6.1.1.5 Test Suite Constant declarations .11
6.1.1.6 Test Suite Variable declarations.12
6.1.1.7 Test Case Variable declarations .12
6.1.1.8 Timer declarations.12
6.1.1.9 ASP type definitions .12
6.1.1.10 PDU type definitions.12
6.1.1.11 CM type definitions.12
6.1.1.12 Alias definitions.12
6.1.2 Constraints part.13
6.1.2.1 General.13
6.1.3 Dynamic part.13
6.1.3.1 General.13
6.1.3.2 Test Case (TC) identifier.13
6.1.3.3 Test step identifier.13
6.1.3.4 Default identifier.14
6.1.3.5 Label identifier.14
6.1.3.6 ATS abbreviations.14
6.2 Implementation conventions.14
6.2.1 Declaration part.14
6.2.2 Constraint part.15
6.2.3 Dynamic part.15
7 PCTR conformance.15
8 PIXIT conformance.16
9 ATS Conformance.16
Annex A (normative): Abstract Test Suite (ATS) .17
A.1 The TTCN Graphical form (TTCN.GR) .17
A.2 The TTCN Machine Processable form (TTCN.MP).17
Annex B (normative): Partial PIXIT proforma .18
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 4 ETSI TS 101 889-3 V1.1.1 (2003-01)
B.1 Identification summary.18
B.2 ATS summary.18
B.3 Test laboratory.18
B.4 Client identification.19
B.5 SUT.19
B.6 Protocol layer information.19
B.6.1 Protocol identification.19
B.6.2 IUT information.20
B.6.2.1 General address parameters .20
B.6.2.2 Parameters for ephemeral terminations.21
B.6.2.3 Parameters for physical terminations.22
B.6.2.4 Parameters for descriptors .23
B.6.2.5 MG properties.25
B.6.2.6 Timers.25
Annex C (normative): PCTR proforma .26
C.1 Identification summary.26
C.1.1 Protocol conformance test report.26
C.1.2 IUT identification.26
C.1.3 Testing environment.26
C.1.4 Limits and reservation.27
C.1.5 Comments.27
C.2 IUT Conformance status .27
C.3 Static conformance summary.27
C.4 Dynamic conformance summary.28
C.5 Static conformance review report.28
C.6 Test campaign report for Media Gateway (MG).29
C.7 Test campaign report for Media Gateway Controller (MGC).32
C.8 Observations.34
History .35

ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 5 ETSI TS 101 889-3 V1.1.1 (2003-01)
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).
All published ETSI deliverables shall include information which directs the reader to the above source of information.
Foreword
This Technical Specification (TS) has been produced by ETSI Project Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON).
The present document is part 3 of a multi-part deliverable covering Telecommunications and Internet Protocol
Harmonization Over Networks (TIPHON); Technology Compliance Specification; TIPHON profile for ITU-T
Recommendation H.248, as identified below:
Part 1: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 2: "Test Suite Structure and Test Purposes (TSS&TP) specification";
Part 3: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for
Testing (PIXIT) proforma specification".
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 6 ETSI TS 101 889-3 V1.1.1 (2003-01)
1 Scope
The present document specifies the Abstract Test Suite (ATS) for TIPHON profile for ITU-T Recommendation H.248,
according to TS 101 885 [1].
The objective of the present document is to provide a basis for conformance tests for TIPHON profile for ITU-T
Recommendation H.248 equipment giving a high probability of inter-operability between different manufacturer's
TIPHON profile for ITU-T Recommendation H.248 equipments.
The present document covers the procedures described in TS 101 885 [1] and ITU-T Recommendation H.248 [4].
The ISO standard for the methodology of conformance testing (ISO/IEC 9646-1 [6] and ISO/IEC 9646-2 [7]) as well as
the ETSI rules for conformance testing (ETS 300 406 [5]) are used as a basis for the test methodology.
Annex A provides the Tree and Tabular Combined Notation (TTCN) part of the ATS.
Annex B provides the partial Protocol Implementation eXtra Information for Testing (PIXIT) Proforma of the ATS.
Annex C provides the Protocol Conformance Test Report (PCTR) proforma of the ATS.
2 References
The following documents contain provisions which, through reference in this text, constitute provisions of the present
document.
• 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.
• For a non-specific reference, the latest version applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
http://docbox.etsi.org/Reference.
[1] ETSI TS 101 885: "Telecommunications and Internet Protocol Harmonization Over Networks
(TIPHON) Release 3; Technology Mapping; Technology Mapping of TIPHON reference point N
to H.248/MEGACO protocol".
[2] ETSI TS 101 889-1: "Telecommunications and Internet Protocol Harmonization Over Networks
(TIPHON) Release 3; Technology Compliance Specification; TIPHON profile for ITU-T H.248;
Part 1: Protocol Implementation Conformance Statement (PICS) proforma specification".
[3] ETSI TS 101 889-2: "Telecommunications and Internet Protocol Harmonization Over Networks
(TIPHON) Release 3; Technology Compliance Specification; TIPHON profile for ITU-T H.248;
Part 2: Test Suite Structure and Test Purposes (TSS&TP) specification".
[4] ITU-T Recommendation H.248 v2 (2002/02): "Gateway control protocol".
[5] ETSI ETS 300 406: "Methods for Testing and Specification (MTS); Protocol and profile
conformance testing specifications; Standardization methodology".
[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".
[8] ISO/IEC 9646-3: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 3: The Tree and Tabular Combined Notation (TTCN)".
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 7 ETSI TS 101 889-3 V1.1.1 (2003-01)
[9] ISO/IEC 9646-4: " Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 4: Test realization".
[10] 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".
[11] ISO/IEC 9646-6: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 6: Protocol profile test specification".
[12] ISO/IEC 9646-7: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 7: Implementation Conformance Statements".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
• Terms defined in ITU-T Recommendation H.248 [4];
• Terms defined in TS 101 885 [1];
• Terms defined in ISO/IEC 9646-1 [6] and in ISO/IEC 9646-2 [7].
3.2 Abbreviations
For the purposes of the present document, the abbreviations given in ISO/IEC 9646-1 [6], ISO/IEC 9646-6 [11],
ISO/IEC 9646-7 [12], TS 101 885 [1] and the following apply:
AC Audit Capabilities command
AD ADd command
AM Administration and Maintenance
ASP Abstract Service Primitive
ATM Abstract Test Method
ATS Abstract Test Suite
AV Audit Value command
BI Invalid behaviour
BO Inopportune behaviour
BV Valid behaviour
IUT Implementation Under Test
LT Lower Tester
MD MoDify command
MG Media Gateway
MGC Media Gateway Controller
MO MOve command
MTC Main Test Component
N NOtify command
PCO Point of Control and Observation
PCTR Protocol Conformance Test Report
PDU Protocol Data Unit
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
PTC Parallel Test Component
SC Service Change command
SU SUbtract command
SUT System Under Test
TC Test Cases
TP Test Purpose
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 8 ETSI TS 101 889-3 V1.1.1 (2003-01)
TR TRansport
TSS Test Suite Structure
TTCN Tree and Tabular Combined Notation
UT Upper Tester
4 Abstract Test Method (ATM)
This clause describes the ATM used to test the TIPHON profile for ITU-T Recommendation H.248 [4], according to
TS 101 885 [1].
4.1 Network architecture
The IUT to be tested can be one of the following: Media Gateway or Media Gateway Controller (see figure 1).


Controller
CC
BC
Media Gateway
MC

Figure 1: Network architecture
4.2 Protocol architecture
The Implementation Under Test (IUT) for which this test case specification consists of the H.248 protocol
(see figure 2).
IUT

H.248

UDP TCP
IP
(LAN)

Figure 2: TIPHON protocol architecture
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 9 ETSI TS 101 889-3 V1.1.1 (2003-01)
4.3 Test architecture
It is possible to specify an ATS based on a Single party (remote) test method for such an IUT when acting as an end
entity. However, it is considered that an ATS based on such an approach is of limited use as the only way to specify
IUT generated PDUs is to use the "implicit send" statement. Many users of such an ATS would replace the "implicit
send" statements with descriptions of the behaviour at other interfaces.
An ATS based on a multi-party test method is considered to be more useful as it is closer to the way a real test suite
would be constructed. Such a test method specifies behaviour at multiple network interfaces. One very important
limitation here is that tests are focussed on one particular interface. Hence the test system is made up of a Main Test
Component (MTC) plus one or more Parallel Test Components (PTC), see figure 4.

Notional UT
TR_PCO
Low er Tester SUT

ATS
H248
UDP/TCP
UDP/TCP
IP
IP
LAN/PHY
LAN/PHY

Figure 3: Test architecture
A single-party testing concept is used, which consists of the following abstract testing functions:
Lower Tester: A Lower Tester (LT) is located in the remote test system. It controls and observes the behaviour of
the IUT.
ATS: The Abstract Test Suite (ATS), defined in the present document, and located in the remote test
system.
CHN_PCO: A Point of Control and Observation (PCO) located at a virtual SAP corresponding to the H.248
port over the TCP/IP or UDP/IP protocol. All test events at the PCO are specified in terms of
Abstract Service Primitives (ASP) containing complete PDU.
Notional UT: No explicit Upper Tester (UT) exists in the system under test. Nevertheless, some specific actions
to cover implicit send events and to obtain feedback information are necessary for the need of the
test procedures. A black box covering these requirements is used in the SUT as a notional U. This
notional UT is considered as part of the test system.
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 10 ETSI TS 101 889-3 V1.1.1 (2003-01)
Master part  Slave part



MTCA OPERATOR


CP1 (CP) PTC1 O
(PCO)

 L0 (PCO)   L1 (PCO)
IUT
SUT


Figure 4: Multi-party test method
In a master/slave arrangement, the MTC is considered to be the master while the PTCs are the slaves. The "slave"
testers are only an explicit description of how to deal with the remote interfaces during the testing process, i.e. "how to
make the IUT send the required message".
This means, in particular, that the verdict will only be assigned from the protocol aspects observed on the interface
under test (i.e. by the "master" tester), as it would be observed by a terminal connected to this interface. A failure in the
correlation between the protocol at the different interfaces to which the different testers are connected, i.e. in the
mechanism of the functional service itself, will not cause a FAIL verdict. For instance, if the IUT fails to send a
message on the tested interface after another interface has received the proper stimulus, the verdict will be
INCONCLUSIVE.
The MTC MTCA has two functions in this configuration. Firstly, it has the MTC function of controlling the one PTC.
Thus it is responsible for starting the PTC and afterwards coordinates activities by exchanging Coordination Messages
(CM) with the PTCs. Secondly it is responsible for the behaviour of the Lower Tester (LT) at TR_PCO.
4.4 Primitives at TR_PCO
The primitive rcv_pdu (port_number, PDU_message) is used to receive H.248 messages from the IUT. The
port_number value shall be obtained by using primitives at TT_PCO at the beginning of the test case.
The primitive snd_pdu (port_number, PDU_message) is used to transmit H.248 messages to the IUT. The
channel_number value shall be obtained by using primitives at TT_PCO at the beginning of the test case.
5 Untestable Test Purposes (TP)
There are no untestable test purposes.
ETSI

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SIST-TS TS 101 889-3 V1.1.1:2004
 11 ETSI TS 101 889-3 V1.1.1 (2003-01)
6 ATS conventions
The ATS conventions are intended to give a better understanding of the ATS but they also describe the conventions
made for the development of the ATS. These conventions shall be considered during any later maintenance or further
development of the ATS.
The ATS conventions contain two clauses, the naming conventions and the implementation conventions. The naming
conventions describe the structure of the naming of all ATS elements. The implementation conventions describe the
functional structure of the ATS.
To define the ATS, the guidelines of the document ETS 300 406 [5] was considered.
6.1 Naming conventions
6.1.1 Declarations part
This clause describes the naming conventions chosen for the elements of the ATS declarations part.
6.1.1.1 General
The following general rules apply for the name given in the declarations part. All type definitions (simple type
definitions, structured type definitions, ASP type definitions and PDU type definitions) shall be written according to the
ASN.1 definitions.
6.1.1.2 Test Suite Operations definition
The Test Suite Operation identifiers are composed of substrings beginning with the standard prefix "TSO_". An
underscore character ("_") separates each substring.
EXAMPLE: TSO_substring
6.1.1.3 Test Suite Parameter declarations
The Test Suite Parameter identifiers are composed of substrings beginning with the standard prefix "TSP_". An
underscore character ("_") separates each substring.
EXAMPLE 1: TSP_t_wait
If the test suite parameter references a Protocol Implementation Conformance Statement (PICS) item, the letter "C" is
added to the standard prefix.
EXAMPLE 2: TSPC_MG
If the test suite parameter references a PIXIT item, the letter "X" is added to the standard prefix.
EXAMPLE 3: TSPX_TS_PORT
6.1.1.4 Test Case Selection expression definition
The Test Case Selection expression identifiers are composed of substrings in uppercase letters, beginning with the
prefix "TCS_". An underscore character ("_") separates each substring.
6.1.1.5 Test Suite Constant declarations
The Test Suite Constant identifiers are composed of substrings beginning with the prefix "TSC_". An underscore
character ("_") separates each substring.
If the test suite cons
...