ETSI EN 300 771-6 V1.1.2 (1999-03)

Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for point-to-multipoint call/bearer control; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network

REN/SPS-05085-6c

Širokopasovno digitalno omrežje z integriranimi storitvami (B-ISDN) - Protokol digitalne naročniške signalizacije št. 2 (DSS2) - Specifikacija tretje plasti vmesnika uporabnik-omrežje B-ISDN za krmiljenje klica/nosilca od točke do več točk - 6. del: Abstraktni preskušalni niz (ATS) in dodatna informacija za preskušanje delne izvedbe protokola (PIXIT) - Proforma specifikacija za omrežje

General Information

• Status: Published
• Publication Date: 16-Mar-1999
• Technical Committee: SPS 5 3 - Conformance Testing
• Current Stage: 12 - Completion
• Due Date: 10-Mar-1999
• Completion Date: 17-Mar-1999
• Mandate: BC-T-338
• Ref Project: SIST EN 300 771-6 V1.1.2:2005 - Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for point-to-multipoint call/bearer control; Part 6: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 771-6 V1.1.2:2005
01-april-2005
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Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber Signalling
System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification for
point-to-multipoint call/bearer control; 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 300 771-6 Version 1.1.2
ICS:
33.080 Digitalno omrežje z Integrated Services Digital
integriranimi storitvami Network (ISDN)
(ISDN)
SIST EN 300 771-6 V1.1.2:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 771-6 V1.1.2:2005

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SIST EN 300 771-6 V1.1.2:2005
EN 300 771-6 V1.1.2 (1999-03)
European Standard (Telecommunications series)
Broadband Integrated Services Digital Network (B-ISDN);
Digital Subscriber Signalling System No. two (DSS2) protocol;
B-ISDN user-network interface layer 3
specification for point-to-multipoint call/bearer control;
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 300 771-6 V1.1.2:2005
2 EN 300 771-6 V1.1.2 (1999-03)
Reference
REN/SPS-05085-6C (751i0idc.PDF)
Keywords
B-ISDN, DSS2, UNI, layer 3, basic, ATS, PIXIT,
network, ISDN, multipoint, broadband
ETSI
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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 300 771-6 V1.1.2:2005
3 EN 300 771-6 V1.1.2 (1999-03)
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 Description of ATM used . 8
4.2 Conventions for test components and PCOs . 8
5 Untestable test purposes . 9
6 ATS to TP map . 9
7 PCTR conformance . 9
8 PIXIT conformance . 10
9 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 . 11
A.1.4 Limits and reservations . 12
A.1.5 Comments . 12
A.2 IUT Conformance status. 12
A.3 Static conformance summary. 12
A.4 Dynamic conformance summary . 12
A.5 Static conformance review report. 13
A.6 Test campaign report . 14
A.7 Observations . 27
Annex B (normative): Partial PIXIT proforma . 28
B.1 Identification summary. 28
B.2 Abstract test suite summary. 28
B.3 Test laboratory. 28
B.4 Client (of the test laboratory) . 29
B.5 System Under Test (SUT) . 29
B.6 Protocol information. 30
B.6.1 Protocol identification . 30
B.6.2 Configuration to be tested. 30
B.6.3 Stimuli for the IUT . 30
B.6.4 Test management timers . 30
B.6.5 Parameter values. 31
ETSI

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SIST EN 300 771-6 V1.1.2:2005
4 EN 300 771-6 V1.1.2 (1999-03)
Annex C (normative): Abstract Test Suite (ATS) . 32
C.1 The TTCN Graphical form (TTCN.GR) . 32
C.2 The TTCN Machine Processable form (TTCN.MP). 32
History. 33
ETSI

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SIST EN 300 771-6 V1.1.2:2005
5 EN 300 771-6 V1.1.2 (1999-03)
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 free of charge 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 EN covering the Digital Subscriber Signalling System No. two (DSS2)
protocol specification for the Broadband Integrated Services Digital Network (B-ISDN) signalling user-network layer 3
specification for point-to-multipoint call/bearer control, as described below:
Part 1: "Protocol specification [ITU-T Recommendation Q.2971 (1995), modified]";
Part 2: "Protocol Implementation Conformance Statement (PICS) specification proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) 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 June 1998
Date of latest announcement of this EN (doa): 30 September 1998
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 March 1999
Date of withdrawal of any conflicting National Standard (dow): 31 March 1999
ETSI

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SIST EN 300 771-6 V1.1.2:2005
6 EN 300 771-6 V1.1.2 (1999-03)
1 Scope
This sixth part of EN 300 771 specifies the network Abstract Test Suite (ATS) for the T reference point or coincident
B
S and T reference point (as defined in ITU-T Recommendation I.413 [8]) of implementations conforming to the
B B
standards for the signalling user-network layer 3 specification for point-to-multipoint call/bearer control of the Digital
Subscriber Signalling System No. two (DSS2) protocol for the pan-European Broadband Integrated Services Digital
Network (B-ISDN), ETS 300 771-1 [1].
A further part of this EN specifies the Test Suite Structure and Test Purposes (TSS&TP) related to this ATS and partial
PIXIT proforma. Other parts specify the TSS&TP and the ATS and partial PIXIT proforma for the user side of the T
B
reference point or coincident S and T reference point of implementations conforming to ETS 300 771-1 [1].
B B
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] ETS 300 771-1: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber
Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification
for point-to-multipoint call/bearer control; Part 1: Protocol specification [ITU-T Recommendation
Q.2971 (1995), modified]".
[2] ETS 300 771-2: "Broadband Integrated Services Digital Network (ISDN); Digital Subscriber
Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification
for point-to-multipoint call/bearer control; Part 2: Protocol Implementation Conformance
Statement (PICS) proforma specification".
[3] ISO/IEC 9646-1: "Information technology - Open System Interconnection - Conformance testing
methodology and framework - Part 1: General concepts".
[4] ISO/IEC 9646-2: "Information technology - Open System Interconnection - Conformance testing
methodology and framework - Part 2: Abstract test suite specification".
[5] ISO/IEC 9646-3: "Information Technology - OSI Conformance Testing Methodology and
Framework; Part 3: The Tree and Tabular Combined Notation".
[6] ISO/IEC 9646-4: "Information technology - Open System Interconnection -Conformance testing
methodology and framework - Part 4: Test realization".
[7] ISO/IEC 9646-5: "Information technology - Open System Interconnection Conformance testing
methodology and framework, Part 5: Requirements on test laboratories and clients for the
conformance assessment process".
[8] ITU-T Recommendation I.413 (1993): "B-ISDN user-network interface".
[9] EN 300 443-2: "Broadband Integrated Services Digital Network (B-ISDN); Digital Subscriber
Signalling System No. two (DSS2) protocol; B-ISDN user-network interface layer 3 specification
for basic call/bearer control; Part 2: Protocol Implementation Conformance Statement (PICS)
proforma specification".
ETSI

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SIST EN 300 771-6 V1.1.2:2005
7 EN 300 771-6 V1.1.2 (1999-03)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply:
Implementation Under Test (IUT): see ISO/IEC 9646-1 [3].
System Under Test (SUT): see ISO/IEC 9646-1 [3].
Abstract Test Suite (ATS): see ISO/IEC 9646-1 [3].
Protocol Implementation Conformance Statement (PICS): see ISO/IEC 9646-1 [3].
PICS proforma: see ISO/IEC 9646-1 [3].
Protocol Implementation Extra Information For Testing (PIXIT): see ISO/IEC 9646-1 [3].
PIXIT proforma: see ISO/IEC 9646-1 [3].
Lower Tester (LT): see ISO/IEC 9646-1 [3].
Upper Tester (UT): see ISO/IEC 9646-1 [3].
Point Of Control And Observation (PCO): see ISO/IEC 9646-1 [3].
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
ATM Abstract Test Method
ATS Abstract Test Suite
B-ISDN Broadband Integrated Services Digital Network
CM Coordination Message
CP Coordination Point
DSS2 Digital Subscriber Signalling System No. two
ExTS Executable Test Suite
IUT Implementation Under Test
LT Lower Tester
MOT Means Of Testing
MTC Main Test Component
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
SUT System Under Test
TCP Test Co-ordination Procedures
TP Test Purpose
TTCN Tree and Tabular Combined Notation
UT Upper Tester
TP Test Purpose
TSS Test Suite Structure
ETSI

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SIST EN 300 771-6 V1.1.2:2005
8 EN 300 771-6 V1.1.2 (1999-03)
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 DSS2
B B B
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.
4.2 Conventions for test components and PCOs
Master part Slave part
MTCA PTC2
A2 (CP)
PTC1
A1 (CP)
L0 (PCO) L1 (PCO) L2 (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 remote interfaces during the testing process, i.e. "how to make
the IUT send the required message".
ETSI

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SIST EN 300 771-6 V1.1.2:2005
9 EN 300 771-6 V1.1.2 (1999-03)
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 coordinates activities by exchanging Coordination
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 Point of
Control and Observations (PCOs) are used. All PCOs reside at the service access points between layers 2 and 3.
SUT
MTC PTC1,2
Layer 3 IUT Layer 3
 L0      L1,2 
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 PTCs PTC1, PTC2 etc. use
PCOs L1, L2 etc. These PCOs are 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 these PCOs.
As stated in a previous paragraph, the non-receipt of network generated messages at L0, which are stimulated by events
at the L1, L2 etc., will result in INCONCLUSIVE rather than FAIL verdicts being assigned.
PTC2 is only activated in that test cases that test the procedures at the access between a root user and the IUT, when
more than one party is involved in the call between the root user and the IUT. In test cases which verify that the IUT
rejects invalid or unacceptable SETUP messages, no PTC is activated at all, as these rejection procedures are considered
local to the access between IUT and MTC.
5 Untestable test purposes
There are no untestable test purposes associated with this ATS.
6 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.
7 PCTR conformance
A test laboratory, when requested by a client to produce a Protocol Conformance Test Report (PCTR), is required, as
specified in ISO/IEC 9646-5 [7], to produce a PCTR conformant with the PCTR template given in annex B of
ISO/IEC 9646-5 [7].
ETSI

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SIST EN 300 771-6 V1.1.2:2005
10 EN 300 771-6 V1.1.2 (1999-03)
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.
8 PIXIT conformance
A test realizer, producing an executable test suite for the Abstract Test Suite (ATS) specification contained in annex C,
is required, as specified in ISO/IEC 9646-4 [6][6], 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 [7], 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.
9 ATS conformance
The test realizer, producing a MOT and Executable Test Suite (ExTS) for this ATS specification, shall comply with the
requirements of ISO/IEC 9646-4[6]. 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 [7].
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 EN 300 771-6 V1.1.2:2005
11 EN 300 771-6 V1.1.2 (1999-03)
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: ETS 300 771
PICS:
Previous PCTRs (if any):
A.1.3 Testing environment
PIXIT reference number:
ATS specification: EN 300 771-6
Abstract test method: Multi-party test method (see ISO/IEC 9646-2)
Means of testing identification:
Dates of testing:
Conformance log reference(s):
Retention date for log reference(s):
ETSI

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SIST EN 300 771-6 V1.1.2:2005
12 EN 300 771-6 V1.1.2 (1999-03)
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.
.........................................................................................................................................................................................
.........................................................................................................................................................................................
.........................................................................................................................................................................................
.........................................................................................................................................................................................
A.2 IUT Conformance status
This IUT has / has not been shown by conformance assessment to be non-conforming to the specified protocol
specification.
Strike the appropriate words in this sentence. If the PICS for this IUT is consistent with the static conformance
requirements (as specified in clause A.3 of this report) and there are no "FAIL" verdicts to be recorded (in clause A.6)
strike the word "has", otherwise strike the words "has not".
A.3 Static conformance summary
The PICS for this IUT is / is not consistent with the static conformance requirements in the specified protocol.
Strike the appropriate words in this sentence.
A.4 Dynamic conformance summary
The test campaign did / did not reveal errors in the IUT.
Strike the appropriate words in this sentence. If there are no "FAIL" verdicts to be recorded (in clause A.6 of this
report) strike the word "did", otherwise strike the words "did not".
Summary of the results of groups of tests:
.........................................................................................................................................................................................
.........................................................................................................................................................................................
.........................................................................................................................................................................................
.........................................................................................................................................................................................
ETSI

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SIST EN 300 771-6 V1.1.2:2005
13 EN 300 771-6 V1.1.2 (1999-03)
A.5 Static conformance review report
If clause A.3 indicates
...