ETSI EN 300 141-4 V1.3.3 (2000-05)

Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user

REN/SPS-05164-4

Digitalno omrežje z integriranimi storitvami (ISDN) - Dopolnilna storitev: zadržanje klica (HOLD) - Protokol digitalne naročniške signalizacije št. 1 (DSS1) - 4. del: Abstraktni preskušalni niz (ATS) in dodatna informacija za preskušanje delne izvedbe protokola (PIXIT) - Proforma specifikacija za uporabnika

General Information

• Status: Published
• Publication Date: 30-May-2000
• Technical Committee: SPS 5 3 - Conformance Testing
• Current Stage: 12 - Completion
• Due Date: 26-May-2000
• Completion Date: 31-May-2000
• Ref Project: SIST EN 300 141-4 V1.3.3:2005 - Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the user

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 141-4 V1.3.3:2005
01-april-2005
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Integrated Services Digital Network (ISDN); Call Hold (HOLD) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol; Part 4: Abstract Test
Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user
Ta slovenski standard je istoveten z: EN 300 141-4 Version 1.3.3
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST EN 300 141-4 V1.3.3:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 141-4 V1.3.3:2005

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SIST EN 300 141-4 V1.3.3:2005
ETSI EN 300 141-4 V1.3.3 (2000-05)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Call Hold (HOLD) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 4: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT)
proforma specification for the user
�

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SIST EN 300 141-4 V1.3.3:2005
2 ETSI EN 300 141-4 V1.3.3 (2000-05)
Reference
REN/SPS-05164-4
Keywords
ATS, DSS1, HOLD, ISDN, PIXIT,
supplementary service, user
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© European Telecommunications Standards Institute 2000.
All rights reserved.
ETSI

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SIST EN 300 141-4 V1.3.3:2005
3 ETSI EN 300 141-4 V1.3.3 (2000-05)
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
5 Untestable test purposes.8
6 ATS conventions.8
6.1 Declarations part .8
6.1.1 Type definitions .8
6.1.1.1 Simple type definitions.8
6.1.1.2 Structured type definitions .9
6.1.1.2.1 TTCN structured type definitions.9
6.1.1.2.2 ASN.1 structured type definitions.9
6.1.1.3 ASP type definitions.10
6.1.1.3.1 TTCN ASP type definitions.10
6.1.1.3.2 ASN.1 ASP type definitions .10
6.1.1.4 PDU type definitions.10
6.1.1.4.1 TTCN PDU type definitions.10
6.1.1.4.2 ASN.1 PDU type definitions .11
6.1.2 Test suite constants .11
6.1.3 Test suite parameters .11
6.1.4 Variables.11
6.1.4.1 Test suite variables.11
6.1.4.2 Test case variables .11
6.1.5 Test suite operation definitions.11
6.2 Constraints part.12
6.2.1 Structured type constraint declaration.12
6.2.2 ASN.1 type constraint declaration .12
6.2.2.1 Specification of encoding rules .13
6.2.3 ASP type constraint declaration.13
6.2.3.1 ASN.1 ASP type constraint declaration .13
6.2.3.2 TTCN ASP type constraint declaration.14
6.2.4 PDU type constraint declaration .14
6.2.4.1 ASN.1 PDU type constraint declaration.14
6.2.4.2 TTCN PDU type constraint declaration .14
6.2.5 Chaining of constraints .14
6.2.5.1 Static chaining.14
6.2.5.2 Dynamic chaining.14
6.2.6 Derived constraints .14
6.2.7 Parameterized constraints .15
6.2.8 Value assignment.15
6.2.8.1 Specific values .15
6.2.8.2 Matching values .15
6.3 Dynamic part .15
6.3.1 Test cases.15
6.3.2 Test steps .15
6.3.3 Defaults.15
ETSI

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SIST EN 300 141-4 V1.3.3:2005
4 ETSI EN 300 141-4 V1.3.3 (2000-05)
7 ATS to TP map.15
8 PCTR conformance.15
9 PIXIT conformance.16
10 ATS conformance .16
Annex A (normative): Protocol Conformance Test Report (PCTR) proforma.17
A.1 Identification summary .17
A.1.1 Protocol conformance test report.17
A.1.2 IUT identification.17
A.1.3 Testing environment.17
A.1.4 Limits and reservations.18
A.1.5 Comments.18
A.2 IUT conformance status .18
A.3 Static conformance summary.18
A.4 Dynamic conformance summary.18
A.5 Static conformance review report .19
A.6 Test campaign report.20
A.7 Observations.21
Annex B (normative): Partial PIXIT proforma.22
B.1 Identification summary .22
B.2 Abstract test suite summary .22
B.3 Test laboratory .22
B.4 Client (of the test laboratory).23
B.5 System Under Test (SUT).23
B.6 Protocol information .24
B.6.1 Protocol identification .24
B.6.2 Parameter values.24
B.6.3 Sending of messages by IUT .24
B.6.4 Configuration of IUT.27
B.6.5 Parameter values - information element codings.27
B.6.6 Timer values.27
Annex C (normative): Abstract Test Suite (ATS).28
C.1 The TTCN Graphical form (TTCN.GR).28
C.2 The TTCN Machine Processable form (TTCN.MP) .28
Annex D (informative): General structure of ATS.29
Annex E (informative): Changes with respect to the previous ETS 300 141-4 .30
History.31
ETSI

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SIST EN 300 141-4 V1.3.3:2005
5 ETSI EN 300 141-4 V1.3.3 (2000-05)
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 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://www.etsi.org/ipr).
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 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 European Standard (Telecommunications series) has been produced by ETSI Technical Committee Services and
Protocols for Advanced Networks (SPAN).
The present document is part 4 of a multi-part EN covering the Digital Subscriber Signalling System No. one (DSS1)
protocol specification for the Integrated Services Digital Network (ISDN) Call Hold (HOLD) supplementary service, as
described below:
Part 1: "Protocol specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the user";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing
(PIXIT) proforma specification for the user";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network".
National transposition dates
Date of adoption of this EN: 5 May 2000
Date of latest announcement of this EN (doa): 31 August 2000
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 28 February 2001
Date of withdrawal of any conflicting National Standard (dow): 28 February 2001
ETSI

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SIST EN 300 141-4 V1.3.3:2005
6 ETSI EN 300 141-4 V1.3.3 (2000-05)
1 Scope
The present document specifies the Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information
for Testing (PIXIT) proforma for the User side of the T reference point or coincident S and T reference point (as
defined in ITU-T Recommendation I.411 [11]) of implementations conforming to the stage three standard for the Call
Hold (HOLD) supplementary service for the pan-European Integrated Services Digital Network (ISDN) by means of the
Digital Subscriber Signalling System No. one (DSS1) protocol, EN 300 141-1 [2].
EN 300 141-3 [4] specifies the Test Suite Structure and Test Purposes (TSS&TP) related to this ATS and partial PIXIT
proforma specification. Other parts specify the TSS&TP and the ATS and partial PIXIT proforma for the Network side
of the T reference point or coincident S and T reference point of implementations conforming to EN 300 141-1 [2].
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, edition number, version number, etc.) or
non-specific.
• For a specific reference, subsequent revisions do not apply.
• For a non-specific reference, the latest version applies.
• A non-specific reference to an ETS shall also be taken to refer to later versions published as an EN with the same
number.
[1] ETSI EN 300 403-1: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling
System No. one (DSS1) protocol; Signalling network layer for circuit-mode basic call control;
Part 1: Protocol specification [ITU-T Recommendation Q.931 (1993), modified]".
[2] ETSI EN 300 141-1 (V1.2): "Integrated Services Digital Network (ISDN); Call Hold (HOLD)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 1:
Protocol specification".
[3] ETSI EN 300 141-2 (V1.2): "Integrated Services Digital Network (ISDN); Call Hold (HOLD)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 2:
Protocol Implementation Conformance Statement (PICS) proforma specification".
[4] ETSI EN 300 141-3 (V1.2): "Integrated Services Digital Network (ISDN); Call Hold (HOLD)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 3: Test
Suite Structure and Test Purposes (TSS&TP) specification for the user".
[5] ETSI EN 300 196-1: "Integrated Services Digital Network (ISDN); Generic functional protocol for
the support of supplementary services; Digital Subscriber Signalling System No. one (DSS1)
protocol; Part 1: Protocol specification".
[6] ISO/IEC 9646-1 (1994): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 1: General concepts".
[7] ISO/IEC 9646-2 (1994): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 2: Abstract Test Suite specification".
[8] ISO/IEC 9646-3 (1998): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 3: The Tree and Tabular Combined Notation (TTCN)".
[9] ISO/IEC 9646-4 (1994): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 4: Test realization".
ETSI

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SIST EN 300 141-4 V1.3.3:2005
7 ETSI EN 300 141-4 V1.3.3 (2000-05)
[10] ISO/IEC 9646-5 (1994): "Information technology; Open Systems Interconnection; Conformance
testing methodology and framework; Part 5: Requirements on test laboratories and clients for the
conformance assessment process".
[11] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".
[12] CCITT Recommendation X.209 (1988): "Specification of basic encoding rules for Abstract Syntax
Notation One (ASN.1)".
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Abstract Test Suite (ATS): see ISO/IEC 9646-1 [6].
Implementation Under Test (IUT): see ISO/IEC 9646-1 [6].
Lower Tester (LT): see ISO/IEC 9646-1 [6].
Point of Control and Observation (PCO): see ISO/IEC 9646-1 [6].
Protocol Implementation Conformance Statement (PICS): see ISO/IEC 9646-1 [6].
PICS proforma: see ISO/IEC 9646-1 [6].
Protocol Implementation eXtra Information for Testing (PIXIT): see ISO/IEC 9646-1 [6].
PIXIT proforma: see ISO/IEC 9646-1 [6].
System Under Test (SUT): see ISO/IEC 9646-1 [6].
UpperTester(UT): see ISO/IEC 9646-1 [6].
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ASP Abstract Service Primitive
ATM Abstract Test Method
ATS Abstract Test Suite
BER Basic Encoding Rules
ExTS Executable Test Suite
HOLD Call Hold
IE Information Element
IUT Implementation Under Test
LT Lower Tester
MOT Means Of Testing
PCO Point of Control and Observation
PDU Protocol Data Unit
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
SUT System Under Test
TCP Test Co-ordination Procedures
TP Test Purpose
TTCN Tree and Tabular Combined Notation
UT Upper Tester
ETSI

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SIST EN 300 141-4 V1.3.3:2005
8 ETSI EN 300 141-4 V1.3.3 (2000-05)
4 Abstract Test Method (ATM)
The remote test method is applied for the HOLD user ATS. The Point of Control and Observation (PCO) resides at the
service access point between layers 2 and 3. This PCO is named "L" (for Lower). The L PCO is used to control and
observe the behaviour of the Implementation Under Test (IUT) and test case verdicts are assigned depending on the
behaviour observed at this PCO.
Tester SUT
LT IUT
PCO
Layer 2 Layer 2
Layer 1 Layer 1
Service provider
Figure 1: Remote test method
ISO/IEC 9646-2 [7] allows the informal expression of Test Co-ordination Procedures (TCP) between the System Under
Test (SUT) upper layer(s) and the Lower Tester (LT). In the ATS contained in annex C, TCP is achieved by use of a
second "informal" PCO, called "O" (for Operator). This PCO is used to specify control but not observation above the
IUT and consequently, events at this PCO are never used to generate test case verdicts. The use of this O PCO is
regarded as a preferred alternative to the use of the implicit send event, in that it allows the ATS to specify in a clear and
meaningful way what actions are required to be performed on the IUT.
5 Untestable test purposes
There are no untestable test purposes associated with this ATS.
6 ATS conventions
This clause is structured similarly to the structure of a TTCN ATS. However, the names of the subclauses are arranged
in a way more suitable to the present document.
6.1 Declarations part
6.1.1 Type definitions
6.1.1.1 Simple type definitions
Where appropriate, simple types have a length, a value list or a range restriction attached.
Simple types defined as being of some string type (e.g. BIT STRING, OCTET STRING), have a length restriction or a
value list attached.
Simple types, defined as being of INTEGER type, have a value list or a range restriction attached.
ETSI

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SIST EN 300 141-4 V1.3.3:2005
9 ETSI EN 300 141-4 V1.3.3 (2000-05)
6.1.1.2 Structured type definitions
6.1.1.2.1 TTCN structured type definitions
All structured type definitions are provided with a full name.
All elements in every structured type definition, defined as being of some string type (e.g. BIT STRING,
OCTET STRING), have a length restriction attached.
If an element in a structured type definition is defined as being of a referenced type, the (possible) restriction is defined
in that referenced type.
For information elements the identifier, which is unique for each element, has its type defined as a simple type where the
value list is restricted to the single value which is the identifier itself. This has the advantage that it allows a test system
derived from this ATS to easily identify information elements embedded in messages. An ATS where information
element identifiers are represented as unrestricted types can present difficulties for a derived test system in the case
where it needs to find one information element embedded in a number of others and the constraints for the other
elements have the any-or-omit value. In such a case the test system cannot easily find the beginning of each information
element.
6.1.1.2.2 ASN.1 structured type definitions
ASN.1 has been used for three major reasons. First, types defined in ASN.1 can model problems that "pure" TTCN
cannot. For instance, data structures modelling ordered or unordered sequences of data are preferably defined in ASN.1.
Second, ASN.1 provides a better restriction mechanism for type definitions by using sub-type definitions. Third, it is
necessary to use ASN.1 to reproduce the type definitions for remote operation components as specified in the base
standards.
The fact that ASN.1 provides a better restriction mechanism for type definitions is used for the purpose of achieving
type-compatibility.
Tables 1 and 2 show the typical use of ASN.1. The FIE type in table 1 is written in ASN.1 to permit the use of the SET
OF construction in the components field. Constraints of the FIE type can therefore be written using the SUPERSET
function which allows to match a single component which may be delivered together with a set of other components.
Table 2 shows the reject component type which is defined following the ASN.1 declaration in EN 300 196-1 [5].
Table 1: ASN.1 type definition FIE
ASN.1 Type Definition
Type Name : FIE
Comments : Facility information element taken from EN 300 196-1; 11.2.2.1.
Specified here for both send & receive event.
Type Definition
SEQUENCE {
informationElementIdentifier FIE_I,
length FIE_LengthType,
extBit BIT STRING (SIZE (1)),
spareBits BIT STRING (SIZE (2)),
protocolProfile BIT STRING (SIZE (5)),
components SET OF Component }
Table 2: ASN.1 type definition RejectComponent
ASN.1 Type Definition
Type Name : RejectComponent
Comments : Reject Component is not specific to any particular operation. The invokeID may be
used to identify a specific operation.
Type Definition
SEQUENCE {
invokedID CHOICE {
invokeID InvokeIDType,
null NULL },
problem CHOICE {
generalProblem [0] IMPLICIT GeneralProblem,
invokeProblem [1] IMPLICIT InvokeProblem,
returnResultProblem [2] IMPLICIT ReturnResultProblem,
returnErrorProblem [3] IMPLICIT ReturnErrorProblem } }
ETSI

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SIST EN 300 141-4 V1.3.3:2005
10 ETSI EN 300 141-4 V1.3.3 (2000-05)
Table 3 shows an example of how ASN.1 can be used to model unordered sequences.
Table 3: ASN.1 type definition FIES
ASN.1 Type Definition
Type Name : FIES
Comments :
Type Definition
SET OF FIE
The possibility to use TTCN and ASN.1 in combination is used, i.e. referring to an ASN.1 type from a TTCN type.
6.1.1.3 ASP type definitions
6.1.1.3.1 TTCN ASP type definitions
TTCN ASP type
...