ETSI TS 101 818-4 V1.1.1 (2001-11)

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

DTS/SPAN-130172-4

Digitalno omrežje z integriranimi storitvami (ISDN) – Protokol digitalne naročniške signalizacije št. 1 (DSS1) – Dopolnilna storitev: iskanje prenosnika v skupini (TH) – 4. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za uporabnika

General Information

• Status: Published
• Publication Date: 29-Nov-2001
• Technical Committee: SPAN 13 - SPAN Peer-to-Peer Control Protocol (PTPCP)
• Current Stage: 12 - Completion
• Due Date: 03-Dec-2001
• Completion Date: 30-Nov-2001
• Ref Project: SIST-TS ETSI/TS 101 818-4 V1.1.1:2005 - Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Trunk Hunting (TH) supplementary service; 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-TS ETSI/TS 101 818-4 V1.1.1:2005
01-januar-2005
'LJLWDOQRRPUHåMH]LQWHJULUDQLPLVWRULWYDPL,6'1±3URWRNROGLJLWDOQHQDURþQLãNH
VLJQDOL]DFLMHãW'66±'RSROQLOQDVWRULWHYLVNDQMHSUHQRVQLNDYVNXSLQL7+±
GHO$EVWUDNWQLSUHVNXãDOQLQL]$76LQGHOQDGRGDWQDLQIRUPDFLMD]D
SUHVNXãDQMHL]YHGEHSURWRNROD3,;,7±3URIRUPDVSHFLILNDFLMD]DXSRUDEQLND
Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one
(DSS1) protocol; Trunk Hunting (TH) supplementary service; 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: TS 101 818-4 Version 1.1.1
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST-TS ETSI/TS 101 818-4 V1.1.1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005

ETSI TS 101 818-4 V1.1.1 (2001-11)
Technical Specification

Integrated Services Digital Network (ISDN);
Digital Subscriber Signalling System No. one (DSS1) protocol;
Trunk Hunting (TH) supplementary service;
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-TS ETSI/TS 101 818-4 V1.1.1:2005
 2 ETSI TS 101 818-4 V1.1.1 (2001-11)



Reference
DTS/SPAN-130172-4
Keywords
ATS, DSS1, ISDN, PIXIT, supplementary service,
TH, user
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The copyright and the foregoing restriction extend to reproduction in all media.

© European Telecommunications Standards Institute 2001.
All rights reserved.

ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 3 ETSI TS 101 818-4 V1.1.1 (2001-11)
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 Version of TTCN used .8
6.2 Use of ASN.1.9
6.2.1 Situations where ASN.1 is used.9
6.2.2 Specification of encoding rules.9
7 ATS to TP map.10
8 PCTR conformance.10
9 PIXIT conformance.10
10 ATS conformance.10
Annex A (normative): Protocol Conformance Test Report (PCTR) proforma.11
A.1 Identification summary.11
A.1.1 Protocol conformance test report.11
A.1.2 IUT identification.11
A.1.3 Testing environment.12
A.1.4 Limits and reservations .12
A.1.5 Comments.12
A.2 IUT conformance status .12
A.3 Static conformance summary.13
A.4 Dynamic conformance summary.13
A.5 Static conformance review report.13
A.6 Test campaign report.14
A.7 Observations.15
Annex B (normative): Partial PIXIT proforma .16
B.1 Identification summary.16
B.2 Abstract test suite summary .16
B.3 Test laboratory.16
B.4 Client (of the test laboratory) .17
B.5 System Under Test (SUT) .17
B.6 Protocol information.18
B.6.1 Protocol identification.18
B.6.2 Basic call parameter values .18
ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 4 ETSI TS 101 818-4 V1.1.1 (2001-11)
B.6.3 Actions required by IUT.18
B.6.4 Timer values.19
Annex C (normative): Abstract Test Suite (ATS) .20
C.1 The TTCN Graphical form (TTCN.GR) .20
C.2 The TTCN Machine Processable form (TTCN.MP).20
History .21

ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 5 ETSI TS 101 818-4 V1.1.1 (2001-11)
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 ETSI Technical Committee Services and Protocols for
Advanced Networks (SPAN).
The present document is part 4 of a multi-part deliverable covering the Digital Subscriber Signalling System No. one
(DSS1) protocol specification for the Integrated Services Digital Network (ISDN) Trunk Hunting (TH) supplementary
service, as identified 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".
ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 6 ETSI TS 101 818-4 V1.1.1 (2001-11)
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 Trunk
Hunting (TH) supplementary service for the pan-European Integrated Services Digital Network (ISDN) by means of the
Digital Subscriber Signalling System No. one (DSS1) protocol, TS 101 818-1 [3].
TS 101 818-3 [5] 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 TS 101 818-1 [3].
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.
[1] 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".
[2] 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]".
[3] ETSI TS 101 818-1 (V1.1.1): "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1); Trunk Hunting (TH) supplementary service; Part 1: Protocol
specification".
[4] ETSI TS 101 818-2 (V1.1.1): "Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. one (DSS1); Trunk Hunting (TH) supplementary service; Part 2: Protocol
Implementation Conformance Statement (PICS) proforma specification".
[5] ETSI TS 101 818-3: "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling
System No. one (DSS1) protocol; Trunk Hunting (TH) supplementary service; Part 3: Test Suite
Structure and Test Purposes (TSS&TP) specification for the user".
[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".
[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".
ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 7 ETSI TS 101 818-4 V1.1.1 (2001-11)
[12] ITU-T Recommendation X.209: "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].
Upper Tester (UT): See ISO/IEC 9646-1 [6].
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ASN.1 Abstract Syntax Notation One
ATM Abstract Test Method
ATS Abstract Test Suite
BER Basic Encoding Rules
ExTS Executable Test Suite
ISDN Integrated Services Digital Network
IUT Implementation Under Test
LT Lower Tester
MOT Means Of Testing
PCO Point of Control and Observation
PCTR Protocol Conformance Test report
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
SUT System Under Test
TCP Test Co-ordination Procedures
TH Trunk Hunting
TP Test Purpose
TTCN Tree and Tabular Combined Notation
UT Upper Tester
ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 8 ETSI TS 101 818-4 V1.1.1 (2001-11)
4 Abstract Test Method (ATM)
The remote test method is applied for the TH user ATS. A 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.
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.
A second "informal" PCO, called "O" (for Operator) is used to specify control but not observation above the IUT;
events at this PCO are never used to generate test case verdicts. Messages sent by the tester at this PCO explicitly
indicate to the operator actions which are to be performed on the SUT. This is regarded as a preferred alternative to the
use of the implicit send event.
Tester Informal test co- SUT
ordination by
operator



Upper layer(s)


LT IUT
PCO L
Layer 2 Layer 2
Layer 1 Layer 1
Service provider

Figure 1: Remote test method with PCO O for test co-ordination
5 Untestable test purposes
There are no untestable test purposes associated with this ATS.
6 ATS conventions
6.1 Version of TTCN used
The version of TTCN used is that defined in ISO/IEC 9646-3 [8].
ETSI

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 9 ETSI TS 101 818-4 V1.1.1 (2001-11)
6.2 Use of ASN.1
6.2.1 Situations where ASN.1 is used
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 possibility to use TTCN and ASN.1 in combination is used, i.e. referring to an ASN.1 type from a TTCN type.
6.2.2 Specification of encoding rules
There is a variation in the encoding rules applied to ASN.1 types and constraints specified in this ATS and therefore a
mechanism is needed to differentiate the encoding rules. However the mechanism specified in ISO/IEC 9646-3 [8] does
not facilitate definition of the encoding rules as needed for this ATS. A solution is therefore used which is broadly in
the spirit of ISO/IEC 9646-3 [8] in which comment fields have been used as a means of encoding rules.
For ASN.1 used in this ATS, two variations of encoding rules are used. One is the commonly known Basic Encoding
Rules (BER) as specified in ITU-T Recommendation X.209 [12]. In the second case the encoding is according to ISDN,
i.e. the ASN.1 data types are a representation of structures contained within the ISDN specification (basic call, Generic
functional protocol or individual supplementary service). For example, if octets of an information element are specified
in ASN.1 as a SEQUENCE then this should be encoded in an Executable Test Suite (ExTS) as any other ISDN
information element specified using tabular TTCN. This ISDN encoding variation is the default encoding rule for this
ATS. This means that all ASN.1 constraint tables are encoded using ISDN (non-BER) encoding unless stated otherwise.
BER encoding should never be applied to an ASN.1 constraint where BER encoding has not been specified.
For BER encoding, an indication is given in the comments field of the table header. For this ATS such indications
appear in the ASN.1 type constraint declaration tables only. In the first line of the table header comment field, the
notation "ASN1_Encoding: BER" is used.
Note that within BER, there are a number of variations for the encoding of lengths of fields. According to
EN 300 196-1 [1], an IUT should be able to interpret all length forms within BER for received PDUs. When sending
PDUs containing BER encoding, EN 300 196-1 [1] gives guidelines but makes no restrictions on the length forms
within BER which an IUT may apply.
In this particular ATS all ASN.1 type constraints which are of type "Component" are to be encoded using BER.
Table 1: ASN.1 type constraint declaration showing use of encoding variation
ASN.1 Type Constraint Declaration
Constraint Name : CancelWithdrawTHG_Inv_R1
ASN.1 Type   : Component
Derivation Path :
Comments    : ASN1_Encoding: BER
         Receive component: CancelWithdrawTHG invoke component
Description
CancelWithdrawTHG_components
cancelWithdrawTHG_InvokeComp
{
 invokeID       ?,
 operation_value globalValue { TSC_tHOID 2 }
}
Detailed comments :

ETSI

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 10 ETSI TS 101 818-4 V1.1.1 (2001-11)
7 ATS to TP map
The identifiers used for the TPs are reused as test case names. Thus there is a straightforward one-to-one mapping.
8 PCTR conformance
A test laboratory, when requested by a client to produce a PCTR, is required, as specified in ISO/IEC 9646-5 [10], to
produce a PCTR conformant with the PCTR template given in annex B of ISO/IEC 9646-5 [10].
Furthermore, a test laboratory, offering testing for the ATS specification contained in annex C, when requested by a
client to produce a PCTR, is required to produce a PCTR conformant with the PCTR proforma contained in annex A of
the present document.
A PCTR which conforms to this PCTR proforma specification shall preserve the content and ordering of the
clauses contained in annex A. Clause A.6 of the PCTR may contain additional columns. If included, these shall be
placed to the right of the existing columns. Text in italics may be retained by the test laboratory.
9 PIXIT conformance
A test realizer, producing an executable test suite for the ATS specification contained in annex C, is required, as
specified in ISO/IEC 9646-4 [9], to produce an augmented partial PIXIT proforma conformant with this partial PIXIT
proforma specification.
An augmented partial PIXIT proforma which conforms to this partial PIXIT proforma specification shall, as a
minimum, have contents which are technically equivalent to annex B. The augmented partial PIXIT proforma may
contain additional questions that need to be answered in order to prepare the Means Of Testing (MOT) for a particular
IUT.
A test laboratory, offering testing for the ATS specification contained in annex C, is required, as specified in
ISO/IEC 9646-5 [10], to further augment the augmented partial PIXIT proforma to produce a PIXIT proforma
conformant with this partial PIXIT proforma specification.
A PIXIT proforma which conforms to this partial PIXIT proforma specification shall, as a minimum, have contents
which are technically equivalent to annex B. The PIXIT proforma may contain additional questions that need to be
answered in order to prepare the test laboratory for a particular IUT.
10 ATS conformance
The test realizer, producing MOT and ExTS for this ATS specification, shall comply with the requirements of
ISO/IEC 9646-4. In particular, these concern the realization of an ExTS based on each ATS. The test realizer shall
provide a statement of conformance of the MOT to this ATS specification.
An ExTS which conforms to this ATS specification shall contain test groups and test cases which are technically
equivalent to those contained in the ATS in annex C. All sequences of test events comprising an abstract test case shall
be capable of being realized in the executable test case. Any further checking which the test system might be capable of
performing is outside the scope of this ATS specification and shall not contribute to the verdict assignment for each test
case.
Test laboratories running conformance test services using this ATS shall comply with ISO/IEC 9646-5. A test
laboratory which claims to conform to this ATS specification shall use an MOT which conforms to this ATS.
ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 11 ETSI TS 101 818-4 V1.1.1 (2001-11)
Annex A (normative):
Protocol Conformance Test Report (PCTR) proforma
Notwithstanding the provisions of the copyright clause related to the text of the present document, ETSI grants that
users of the present document may freely reproduce the PCTR proforma in this annex so that it can be used for its
intended purposes and may further publish the completed PCTR.
A.1 Identification summary
A.1.1 Protocol conformance test report
PCTR number:

PCTR date:

Corresponding SCTR number:

Corresponding SCTR date:

Test laboratory identification:


Test laboratory manager:


Signature:


A.1.2 IUT identification
Name:

Version:

Protocol specification: TS 101 818-1
PICS:

Previous PCTRs (if any):


ETSI

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SIST-TS ETSI/TS 101 818-4 V1.1.1:2005
 12 ETSI TS 101 818-4 V1.1.1 (2001-11)
A.1.3 Testing environment
PIXIT Reference number:

ATS Specification: TS 101 818-4
Abstract Test Method: Remote test method (see ISO/IEC 9646-2)
Means of Testing identification:

Dates of testing:

Conformance log reference(s):

Retention date for log reference(s):


A.1.4 Limits and reservations
Additional information relevant to the technical contents or further use of the test report, or to the rights and
obligations of the test laboratory and the client, may be given here. Such information may include restriction on the
publication of the report.
.........................................................................................................................................................................................
.........................................................................................................................................................................................
.........................................................................................................................................................................................
.........................................................................................................................................................................................
A.1.5 Comments
Additional comments may be given by either the client or the test laboratory on any of the contents of the PCTR, for
example, to note disagreement between the two parties.
.........................................................................................................................................................................................
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...