ETSI EN 300 141-6 V1.3.4 (1999-11)

SLOVENSKI STANDARD
SIST EN 300 141-6 V1.3.4:2005
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 6: Abstract Test
Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network
Ta slovenski standard je istoveten z: EN 300 141-6 Version 1.3.4
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST EN 300 141-6 V1.3.4:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 141-6 V1.3.4:2005

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SIST EN 300 141-6 V1.3.4:2005
ETSI EN 300 141-6 V1.3.4 (1999-11)
European Standard (Telecommunications series)
Integrated Services Digital Network (ISDN);
Call Hold (HOLD) supplementary service;
Digital Subscriber Signalling System No. one (DSS1) protocol;
Part 6: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network



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SIST EN 300 141-6 V1.3.4:2005
2 ETSI EN 300 141-6 V1.3.4 (1999-11)
Reference
REN/SPS-05164-6 (1b1i0j2o.PDF)
Keywords
ISDN, DSS1, supplementary service, HOLD,
ATS, PIXIT, network
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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.
ETSI

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SIST EN 300 141-6 V1.3.4:2005
3 ETSI EN 300 141-6 V1.3.4 (1999-11)
Contents
Intellectual Property Rights.6
Foreword .6
1 Scope.7
2 References.7
3 Definitions and abbreviations .8
3.1 Definitions.8
3.2 Abbreviations .8
4 Abstract Test Method (ATM) .9
4.1 Description of ATM used.9
4.1.1 Conventions for test components and PCOs .9
4.1.2 Conventions for variables and parameters .10
4.2 Alternative ATM .11
5 Untestable test purposes.11
6 ATS conventions.12
6.1 Declarations part .12
6.1.1 Type definitions .12
6.1.1.1 Simple type definitions.12
6.1.1.2 Structured type definitions .12
6.1.1.2.1 TTCN structured type definitions.12
6.1.1.2.2 ASN.1 structured type definitions.12
6.1.1.3 ASP type definitions.13
6.1.1.3.1 TTCN ASP type definitions.13
6.1.1.3.2 ASN.1 ASP type definitions .14
6.1.1.4 PDU type definitions.14
6.1.1.4.1 TTCN PDU type definitions.14
6.1.1.4.2 ASN.1 PDU type definitions .14
6.1.2 Test suite constants .14
6.1.3 Test suite parameters .14
6.1.4 Variables.14
6.1.4.1 Test suite variables.14
6.1.4.2 Test case variables .14
6.1.5 Test suite operation definitions.15
6.2 Constraints part.15
6.2.1 Structured type constraint declaration.15
6.2.2 ASN.1 type constraint declaration .15
6.2.2.1 Specification of encoding rules .16
6.2.3 ASP type constraint declaration.17
6.2.3.1 ASN.1 ASP type constraint declaration .17
6.2.3.2 TTCN ASP type constraint declaration.17
6.2.4 PDU type constraint declaration .17
6.2.4.1 ASN.1 PDU type constraint declaration.17
6.2.4.2 TTCN PDU type constraint declaration .17
6.2.5 Chaining of constraints .17
6.2.5.1 Static chaining.17
6.2.5.2 Dynamic chaining.17
6.2.6 Derived constraints .18
6.2.7 Parameterized constraints .18
6.2.8 Value assignment.18
6.2.8.1 Specific values .18
6.2.8.2 Matching values .18
6.3 Dynamic part .18
ETSI

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SIST EN 300 141-6 V1.3.4:2005
4 ETSI EN 300 141-6 V1.3.4 (1999-11)
6.3.1 Test cases.18
6.3.2 Test steps .18
6.3.2.1 PTC1_IN.18
6.3.2.2 PTC1_OUT.19
6.3.3 Defaults.19
7 ATS to TP map.19
8 PCTR conformance.19
9 PIXIT conformance.19
10 ATS conformance .20
Annex A (normative): Protocol Conformance Test Report (PCTR) proforma.21
A.1 Identification summary .21
A.1.1 Protocol conformance test report.21
A.1.2 IUT identification.21
A.1.3 Testing environment.22
A.1.4 Limits and reservations.22
A.1.5 Comments.22
A.2 IUT conformance status .22
A.3 Static conformance summary.22
A.4 Dynamic conformance summary.23
A.5 Static conformance review report .23
A.6 Test campaign report.24
A.7 Observations.25
Annex B (normative): Partial PIXIT proforma.26
B.1 Identification summary .26
B.2 Abstract test suite summary .26
B.3 Test laboratory .26
B.4 Client (of the test laboratory).27
B.5 System Under Test (SUT).27
B.6 Protocol information .28
B.6.1 Protocol identification .28
B.6.2 Parameter values.28
B.6.3 Sending of messages by IUT .28
B.6.4 Configuration of IUT.29
B.6.5 Timer values.29
B.7 Basic call PIXIT items .30
B.7.1 Parameter values - information element codings.30
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SIST EN 300 141-6 V1.3.4:2005
5 ETSI EN 300 141-6 V1.3.4 (1999-11)
Annex C (normative): Abstract Test Suite (ATS).31
C.1 The TTCN Graphical form (TTCN.GR).31
C.2 The TTCN Machine Processable form (TTCN.MP) .31
Annex D (informative): General structure of ATS.32
Annex E (informative): Change record.33
E.1 Changes with respect to EN 300 141-6 (V1.3) .33
E.2 Changes with respect to ETS 300 141-6 (Ed. 1).33
History.34
ETSI

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SIST EN 300 141-6 V1.3.4:2005
6 ETSI EN 300 141-6 V1.3.4 (1999-11)
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 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 Signalling
Protocols and Switching (SPS).
The present document is part 6 of a multi-part standard 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 November 1999
Date of latest announcement of this EN (doa): 29 February 2000
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 August 2000
Date of withdrawal of any conflicting National Standard (dow): 31 August 2000
ETSI

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SIST EN 300 141-6 V1.3.4:2005
7 ETSI EN 300 141-6 V1.3.4 (1999-11)
1 Scope
This sixth part of EN 300 141 specifies the Abstract Test Suite (ATS) and partial Protocol Implementation eXtra
Information for Testing (PIXIT) proforma for the Network side of the T reference point or coincident S and T reference
point (as defined in ITU-T Recommendation I.411 [10]) 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 [1].
EN 300 141-5 [3] 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 User side of
the T reference point or coincident S and T reference point of implementations conforming to EN 300 141-1 [1].
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] 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".
[2] 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".
[3] EN 300 141-5 (V1.2): "Integrated Services Digital Network (ISDN); Call Hold (HOLD)
supplementary service; Digital Subscriber Signalling System No. one (DSS1) protocol; Part 5: Test
Suite Structure and Test Purposes (TSS&TP) specification for the network".
[4] 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".
[5] ISO/IEC 9646-1: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 1: General concepts".
[6] ISO/IEC 9646-2: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 2: Abstract test suite specification".
[7] ISO/IEC 9646-3: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 3: The Tree and Tabular Combined Notation (TTCN)".
[8] ISO/IEC 9646-4: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 4: Test realization".
[9] ISO/IEC 9646-5: "Information technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 5: Requirements on test laboratories and clients for the
conformance assessment process".
[10] ITU-T Recommendation I.411 (1993): "ISDN user-network interfaces - Reference configurations".
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SIST EN 300 141-6 V1.3.4:2005
8 ETSI EN 300 141-6 V1.3.4 (1999-11)
[11] CCITT Recommendation X.209 (1988): "Specification of basic encoding rules for Abstract Syntax
Notation One (ASN.1)".
[12] 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 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 [5]
Implementation Under Test (IUT): see ISO/IEC 9646-1 [5]
Lower Tester (LT): see ISO/IEC 9646-1 [5]
Point of Control and Observation (PCO): see ISO/IEC 9646-1 [5]
Protocol Implementation Conformance Statement (PICS): see ISO/IEC 9646-1 [5]
PICS proforma: see ISO/IEC 9646-1 [5]
Protocol Implementation eXtra Information for Testing (PIXIT): see ISO/IEC 9646-1 [5]
PIXIT proforma: see ISO/IEC 9646-1 [5]
System Under Test (SUT): see ISO/IEC 9646-1 [5]
UpperTester(UT): see ISO/IEC 9646-1 [5]
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
CM Co-ordination Message
CP Co-ordination Point
ExTS Executable Test Suite
HOLD Call Hold
IUT Implementation Under Test
LT Lower Tester
MOT Means Of Testing
MTC Main Test Component
PCO Point of Control and Observation
PDU Protocol Data Unit
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
PTC Parallel Test Component
SUT System Under Test
TCP Test Co-ordination Procedures
TP Test Purpose
TTCN Tree and Tabular Combined Notation
UT Upper Tester
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SIST EN 300 141-6 V1.3.4:2005
9 ETSI EN 300 141-6 V1.3.4 (1999-11)
4 Abstract Test Method (ATM)
4.1 Description of ATM used
The requirement for testing the network IUT is to focus on the behaviour of the network IUT at the user-network
interface where a T reference point or coincident S and T reference point applies. Thus the IUT is the network DSS1
protocol entity at a particular user-network interface and is not the whole network.
It is possible to specify an ATS based on a Single party (remote) test method for such an IUT. 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 in that it is closer to how 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 focused on one particular interface. Thus the test system is made up one Main Test
Component (MTC) and one or more Parallel Test Components (PTC), see figure 1.
4.1.1 Conventions for test components and PCOs
Master part Slave part
MTCA
PTC1
CPA1
L1 PCO
L0 PCO
IUT
NETWORK
Figure 1: 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 "other" interfaces during the testing process, i.e. "how to make
the IUT send the required message".
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SIST EN 300 141-6 V1.3.4:2005
10 ETSI EN 300 141-6 V1.3.4 (1999-11)
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 or more
PTCs. Thus it is responsible for starting the PTCs and afterwards co-ordinates activities by exchanging Co-ordination
Messages (CM) with the PTCs. Secondly it is responsible for the behaviour of the Lower Tester (LT) at PCO L0.
A combination of the remote and multi-party test methods is applied. As can be seen from figure 1, several PCOs are
used. All PCOs reside at the service access points between layers 2 and 3.
MTC SUT PTC1
Layer 3 IUT Layer 3
  
L0    L1
Layer 2 Layer 2
 

      
Layer 1 Layer 1
Service provider
Figure 2: Combination of the remote and multi-party test methods
The MTC PCO is named "L0" ("L" for Lower). The L0 PCO is used to control and observe the behaviour of the IUT
and test case verdicts are assigned depending on the behaviour observed at this PCO. The PTC PTC1 uses PCO L1.
This PCO is used to control and, in a limited way, observe the behaviour of the network equipment at interfaces other
than the one under test. No verdicts are assigned at this PCO.
As stated in a previous paragraph, the non-receipt of network generated messages at L0, which are stimulated by events
at the L1, will result in INCONCLUSIVE rather than FAIL verdicts being assigned.
4.1.2 Conventions for variables and parameters
MTCA
call reference CREF1
B channel (basic) bch_num1 (to PTC1)
channel nr (primary) CH_NUM1
PCO L0 IPN0, LIPN0
PTC1
call reference P1CREF
B channel (basic) P1_bch_num
channel nr (primary) P1_CH_NUM
PCO L1 IPN1, LIPN1
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SIST EN 300 141-6 V1.3.4:2005
11 ETSI EN 300 141-6 V1.3.4 (1999-11)
4.2 Alternative ATM
As stated in subclause 4.1, an ATS based on a single-party (remote) ATM is possible. Such an ATS may be generated
from the one specifie
...