ETSI EN 300 324-4 V3.1.1 (2001-03)

V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side)

REN/SPAN-09101-4

Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.1 za podporo dostopovnega omrežja (AN) – 4. del: Abstraktni preskušalni niz (ATS) in delna dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma specifikacija za omrežno plast na strani dostopovnega omrežja (AN)

General Information

• Status: Published
• Publication Date: 19-Mar-2001
• Technical Committee: SPAN 9 - Access Networks and Service Node Interfaces
• Current Stage: 12 - Completion
• Due Date: 23-Mar-2001
• Completion Date: 20-Mar-2001
• Ref Project: SIST EN 300 324-4 V3.1.1:2005 - V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN side)

Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 300 324-4 V3.1.1:2005
01-januar-2005
Vmesniki V pri digitalnih krajevnih centralah (LE) – Vmesnik V5.1 za podporo
dostopovnega omrežja (AN) – 4. del: Abstraktni preskušalni niz (ATS) in delna
dodatna informacija za preskušanje izvedbe protokola (PIXIT) – Proforma
specifikacija za omrežno plast na strani dostopovnega omrežja (AN)
V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access
Network (AN); Part 4: Abstract Test Suite (ATS) and partial Protocol Implementation
eXtra Information for Testing (PIXIT) proforma specification for the network layer (AN
side)
Ta slovenski standard je istoveten z: EN 300 324-4 Version 3.1.1
ICS:
33.040.30 Komutacijski in signalizacijski Switching and signalling
sistem systems
SIST EN 300 324-4 V3.1.1:2005 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 300 324-4 V3.1.1:2005

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SIST EN 300 324-4 V3.1.1:2005
ETSI EN 300 324-4 V3.1.1 (2001-03)
European Standard (Telecommunications series)
V interfaces at the digital Local Exchange (LE);
V5.1 interface for the support of Access Network (AN);
Part 4: Abstract Test Suite (ATS) and partial Protocol
Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network layer (AN side)

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SIST EN 300 324-4 V3.1.1:2005
2 ETSI EN 300 324-4 V3.1.1 (2001-03)
Reference
REN/SPAN-09101-4
Keywords
AN,ATS,LE,PIXIT,Vinterface,V5interface
ETSI
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© European Telecommunications Standards Institute 2001.
All rights reserved.
ETSI

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SIST EN 300 324-4 V3.1.1:2005
3 ETSI EN 300 324-4 V3.1.1 (2001-03)
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. 8
4 Abstract test method .9
4.1 ATM. 9
4.2 NWK protocol testing. 9
4.3 Data link addresses. 10
4.4 Execution of TCs. 10
4.4.1 Handling of error indication . 10
4.4.2 TC execution sequence. 10
5 Untestable test purposes.11
5.1 Control protocol . 11
5.2 PSTN protocol . 12
6 Abstract test suite conventions .12
6.1 Naming conventions. 12
6.1.1 Declaration part . 12
6.1.2 Constraint part . 13
6.1.3 Dynamic part . 14
6.1.3.1 TC. 14
6.1.3.2 Test steps. 14
6.1.3.3 General aspects. 14
6.1.4 ATS abbreviations . 14
6.2 Implementation conventions. 15
6.2.1 Declaration part . 15
6.2.2 Constraint part . 15
6.2.3 Dynamic part . 16
6.2.4 Documentation. 17
Annex A (normative): Abstract test suite for NWK testing .18
A.1 The TTCN Graphical form (TTCN.GR).18
A.2 The TTCN Machine Processable form (TTCN.MP) .18
Annex B (normative): Partial PIXIT proforma.19
B.1 Introduction.19
B.2 PIXIT proforma.19
B.2.1 Identification summary. 19
B.2.2 Abstract test suite summary. 19
B.2.3 Test laboratory . 19
B.2.4 Client. 20
B.2.5 SUT . 20
B.2.6 Protocol layer information . 21
B.2.6.1 Protocol identification. 21
B.2.6.2 IUT information. 21
ETSI

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SIST EN 300 324-4 V3.1.1:2005
4 ETSI EN 300 324-4 V3.1.1 (2001-03)
Bibliography.27
History .28
ETSI

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SIST EN 300 324-4 V3.1.1:2005
5 ETSI EN 300 324-4 V3.1.1 (2001-03)
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 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://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 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 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 deliverable covering the V5.1 interface for the support of Access
Network (AN); V5.1 interface for the support of Access Network (AN), as described below:
Part 1: "V5.1 interface specification";
Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification";
Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (AN side)";
Part 4: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing
(PIXIT) proforma specification for the network layer (AN side)";
Part 5: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (LE side)";
Part 6: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the network layer (LE side)";
Part 7: "Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer";
Part 8: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT)
proforma specification for the data link layer";
Part 9: "Test specification for the physical layer".
National transposition dates
Date of adoption of this EN: 16 March 2001
Date of latest announcement of this EN (doa): 30 June 2001
Date of latest publication of new National Standard
or endorsement of this EN (dop/e): 31 December 2001
Date of withdrawal of any conflicting National Standard (dow): 31 December 2001
ETSI

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SIST EN 300 324-4 V3.1.1:2005
6 ETSI EN 300 324-4 V3.1.1 (2001-03)
1 Scope
The present document contains the Abstract Test Suite (ATS) as well as the Abstract Test Method (ATM) and the
partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma for the Network layer (NWK) of the
V5.1 interface and parts of the system management of the Access Network (AN) side of a V5.1 interface.
The objective of the present document is to provide an ATS containing conformance tests which give a high probability
of inter-operability of an AN and a Local Exchange (LE) from different manufacturers over the V5.1 interface.
ISO/IEC 9646-1 [5] and ISO/IEC 9646-2 [6] are used as the basis for the test methodology. The ATS is defined using
the Tree and Tabular Combined Notation (TTCN) according to ISO/IEC 9646-3 [7].
The ATS in annex A describes a set of Test Cases (TCs) which are based on the Test Purposes (TPs) specified in
EN 300 324-3 [3]. The TCs provide the implementation of the TPs and can be converted into an executable test suite by
using available TTCN translators and the corresponding tools.
Annex B provides the partial PIXIT proforma.
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 300 324-1 (V2.1.1): "V interfaces at the digital Local Exchange (LE); V5.1 interface for
the support of Access Network (AN); Part 1: V5.1 interface specification".
[2] ETSI EN 300 324-2: "V interfaces at the digital Local Exchange (LE); V5.1 interface for the
support of Access Network (AN); Part 2: Protocol Implementation Conformance Statement (PICS)
proforma specification".
[3] ETSI EN 300 324-3: "V interfaces at the digital Local Exchange (LE); V5.1 interface for the
support of Access Network (AN); Part 3: Test Suite Structure and Test Purposes (TSS&TP)
specification for the network layer (AN side)".
[4] ISO 7498: "Information Processing Systems - Open Systems Interconnection - Basic Reference
Model".
[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 9646-5: "Information Technology - Open Systems Interconnection - Conformance testing
methodology and framework - Part 5: Requirements on test laboratories and clients for the
conformance assessment process".
ETSI

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SIST EN 300 324-4 V3.1.1:2005
7 ETSI EN 300 324-4 V3.1.1 (2001-03)
3 Definitions and abbreviations
3.1 Definitions
For the purposes of the present document, the following terms and definitions apply, together with those given in
EN 300 324-1 [1]:
Abstract Test Case (ATC): refer to ISO/IEC 9646-1 [5]
NOTE: In the present document, the commonly used term TC is applied in the same way as ATC.
Abstract Test Suite (ATS): refer to ISO/IEC 9646-1 [5]
current provisioning variant: ID for the presently active data set
Data Link Layer (DLL): refer to ISO 7498 [4]
embedded variant: refer to ISO/IEC 9646-2 [6]
Implementation Under Test (IUT): refer to ISO/IEC 9646-1 [5]
incorrect information element: specified IE carrying IE types not defined in EN 300 324-1 [1]
invalid PSTN information element: PSTN IE not according to national specific requirements
invalid protocol data unit: protocol Data Unit (PDU) which contains an incorrect message format
invalid PSTN message: PSTN message carrying IEs not according to national specific requirements
LowerTester(LT): refer to ISO/IEC 9646-1 [5]
Network Layer (NWK): refer to ISO 7498 [4]
new provisioning variant: ID for the data set which was announced to the IUT to become the next active data set
through re-provisioning
Physical Layer (PHL): refer to ISO 7498 [4]
PICS proforma: refer to ISO/IEC 9646-1 [5]
PIXIT proforma: refer to ISO/IEC 9646-1 [5]
Point Of Control And Observation (PCO): refer to ISO/IEC 9646-1 [5]
Protocol Implementation Conformance Statement (PICS): refer to ISO/IEC 9646-1 [5]
Protocol Implementation eXtra Information For Testing (PIXIT): refer to ISO/IEC 9646-1 [5]
remote test method: refer to ISO/IEC 9646-2 [6]
specified information element: IE ID defined in EN 300 324-1 [1]
System Under Test (SUT): refer to ISO/IEC 9646-1 [5]
Test Purpose (TP): refer to ISO/IEC 9646-1 [5]
unknown provisioning variant: ID for a non-available data set
unspecified information element: IE ID not defined in EN 300 324-1 [1]
valid information element: PSTN IE according to national specific requirements
valid PSTN message: PSTN message carrying IEs according to national specific requirements
ETSI

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SIST EN 300 324-4 V3.1.1:2005
8 ETSI EN 300 324-4 V3.1.1 (2001-03)
3.2 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AN Access Network
ASP Abstract Service Primitive
ATC AbstractTestCase
ATM Abstract Test Method
ATS Abstract Test Suite
BI Invalid Behaviour
BO Inopportune Behaviour
BV Valid Behaviour
CA CApability test
CTRL Control
DLL Data Link Layer
DSAP Data link SAP
FE Function Element
FSM Finite State Machine
ID Identifier
IE Information Element
IEI Information Element Identifier
ISDN Integrated Services Digital Network
ISDN-BA ISDN-Basic Access
IT basic Interconnection Test
IUT Implementation Under Test
L3addr Layer 3 address
LE Local Exchange
LT1 Lower Tester 1
PCO Point of Control and Observation
PDU Protocol Data Unit
PHL Physical Layer
PICS Protocol Implementation Conformance Statement
PIXIT Protocol Implementation eXtra Information for Testing
PSTN Public Switched Telephone Network
SAP Service Access Point
SUT System Under Test
TC Test Case, the same definition as for ATC applies
TP Test Purposes
TTCN Tree and Tabular Combined Notation
UL Upper Layer
UT Upper Tester
V5DLaddr V5 Data Link address
ETSI

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SIST EN 300 324-4 V3.1.1:2005
9 ETSI EN 300 324-4 V3.1.1 (2001-03)
4 Abstract test method
This clause describes the Abstract Test Method (ATM) and the Point of Control and Observation (PCO) used to test the
NWK of the V5.1 protocol for the AN components.
4.1 ATM
Principally, the remote test method is used for V5.1 AN NWK conformance testing. Certain V5.1 AN NWK TPs need
also part of the service and national functions. Therefore, the embedded variant of the remote test method is applied.
The national dependant information is defined in the PIXIT.
NOTE: The multi-party testing ATM (MPyT) (ISO/IEC 9646-2 [6], clause 12.7, was also considered for this
ATS. But as the interfaces on the user port side may be implemented on national specific standards the
MPyT ATM was not applicable for this ATS. To solve this need for operations on the user port interfaces,
terminals will be connected to the user ports. All necessary functions which would have been provided by
a lower tester connected to the user ports can be achieved by manual operations on the connected
terminal.
4.2 NWK protocol testing
The V5.1 implementations do not offer a direct access to the upper service boundary. The remote test method was
chosen because any co-ordination procedures can only be expressed in an informal way.
SUT V5 Test System
UT
LT1
V5 NWK PDUs
IUT
PCO/DSAP
V5-NWK
DL-DATA
Control,BCC, LINK,
Service Provider
Protection and PSTN
DLL & PHL layers
DL connection endpoints
Figure 1: Remote single layer test method applied to the V5.1 NWK testing
LT1: A Lower Tester (LT1) is located in a remote V5.1 test system. It controls and observes the
behaviours of the IUT.
DSAP: A unique Data link Service Access Point (DSAP) is defined at the V5.1 interface and commonly
used for exchanging service data of the different Network layer protocol functional entities: PSTN,
Control protocols.
PCO: The PCO for NWK testing is located on the DSAP. All test events at the PCO are specified in
terms of data link Abstract Service Primitives (ASPs) and network layer PDUs.
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SIST EN 300 324-4 V3.1.1:2005
10 ETSI EN 300 324-4 V3.1.1 (2001-03)
UT: No explicit Upper Tester (UT) exists in the test system. However, the SUT needs to carry out some
UL functions to achieve some effects of test co-ordination procedures. Designing ATS, the
capability of the system management functions, such as controls of the IUT, its interactions with
the Q interface may be taken into account. The controls of the IUT will be implied or informally
expressed in the ATS, but no assumption shall be made regarding their feasibility or realization.
An example of such controls could be to provoke restarting of the IUT through the Q interface.
V5-NWK: To test the PSTN and ISDN-BA protocols, a simulator shall be attached to relevant User Port
(UP).
4.3 Data link addresses
Within the DSAP, different V5DLaddr are used to identify each corresponding data link connection. Each network
layer protocol functional entity can have only one data link connection, e.g. all PSTN signalling information shares one
data link connection.
Table 1 shows the allocated V5DLaddr used by protocol function entities.
Table 1: V5DLaddr
Protocol PSTN Control
V5DLaddr 8 176 8 177
4.4 Execution of TCs
4.4.1 Handling of error indication
During the execution of the NWK ATS many error indications will be sent to the system management due to the invalid
and the inopportune TCs. It is up to the IUT supplier to take the necessary precautions to avoid any impact on the test
result.
4.4.2 TC execution sequence
The following test sequence shall be applied:
The TC containing the start-up procedure (TC11__SM_01) shall always be the first TC executed. Also in any case
where the IUT has to be restarted this TC shall be first executed.
Protocol groups: CTRL ⇒ PSTN.
Test groups: IT ⇒ CA ⇒ TI ⇒ BV ⇒ BO ⇒ BI.
Interactions between the different test groups are not considered. It is up to the IUT supplier to take the necessary
precautions to avoid any impact on the test result.
NOTE: This applies in particular to PORT CONTROL messages from ISDN ports while testing PSTN-related
protocols and vice versa.
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SIST EN 300 324-4 V3.1.1:2005
11 ETSI EN 300 324-4 V3.1.1 (2001-03)
5 Untestable test purposes
This clause gives a list of TPs which are not implemented in the ATS due to the chosen abstract test method or other
restrictions.
5.1 Control protocol
The test purposes listed in table 2 are not implemented in the ATS due to unknown reaction of the IUT after testing the
TPs or due to the fact they have the same purpose of TC already implemented.
Table 2: Untestable TPs
Test Purpose
TP1311S1_01
TP1313S0_01
TP1321S2_01
TP1324S1001
TP1324S1002
TP1324SM_06
TP1324SM_07
TP1325SM_03
TP1325S2207
TP1325S2208
TP1325S2209
TP1424S1101
TP1425SM_01
TP1521S1-01
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SIST EN 300 324-4 V3.1.1:2005
12 ETSI EN 300 324-4 V3.1.1 (2001-03)
5.2 PSTN protocol
The test purposes listed in table 3 are not implemented in the ATS due to unknown reaction of the IUT after testing the
TPs.
Table 3: Untestable TPs
Test Purpose
TP23__S0_04
TP23__S0_06
TP23__S0_07
TP23__S1_08
TP23__S1_09
TP23__S2_11
TP23__S3_10
TP23__S3_11
TP23__S4_06
TP23__S4_09
TP23__S4_10
TP23__S6_05
TP23__S7_11
TP24__S2_03
TP24__S2_04
TP24__S3_04
TP24__S3_05
TP24__S4_05
TP24__S5_04
TP24__S5_05
TP24__S5_06
TP24__S7_02
TP26__S5_01
6 Abstract test suite conventions
The ATS conventions are intended to give a better understanding of the ATS but they describe also the conventions
made for the development of the ATS, thus for any later maintenance purposes or further development of the ATS the
conventions described in this clause shall be considered.
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.
NOTE: To define the ATS, the guidelines given in EN 300 406 and ETR 141 were considered.
6.1 Naming conventions
6.1.1 Declaration part
The ID names of the following definitions are written in lowercase:
- structured type definitions;
- ASP type definitions;
- PDU type definitions.
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SIST EN 300 324-4 V3.1.1:2005
13 ETSI EN 300 324-4 V3.1.1 (2001-03)
The ID names of the following definitions are written in uppercase:
- Test Suite Parameter Declarations;
- Test Case Selection Expression Definitions;
- Test Suite Constant Declarations;
- Test Case Variable Declarations.
ID names of PDUs and structured types commence with a protocol identifier to define which protocol they are
belonging to. The following identifiers are used:
- control protocol: ctrle.g. crtl_common_control_ack;
- PSTN signalling: pstn e.g. pstn_signal_ack.
ID names of PDUs and structured types which are used for invalid tests commence with "bi".
EXAMPLE 1: bi_com_ctrl_two_mety.
Complete names as defined in the specifications are used for ID names of declarations.
EXAMPLE 2: ctrl_control_function_element.
Test suite parameter ID names commence with TSP:
- PICS are identified by adding the letter "C": TSPC_. (e.g.: TSPC_PSTN);
- PIXIT are identified by adding the letter "X": TSPX_. (e.g.: TSPX_PORT_ADDRESS).
If the test suite parameter is representing a system parameter or value, only the parameter name is used.
EXAMPLE 3: MR (receive sequence number in signal message).
Test suite operations commence with TSO.
EXAMPLE 4: TSO_INTEGER_TO_O_1.
Test suite constant ID names commence with TSC.
EXAMPLE 5: TSC_CFE_FE201_2_UNBL.
If the constant is representing a system parameter or value, only the parameter name is used.
EXAMPLE 6: N01.
ID names of timers commence with T. The same names as in the specification are used.
EXAMPLE 7: T01.
6.1.2 Constraint part
Constraint names commence with uppercase. The remaining part of the ID name is written in lowercase.
ID names of elements concerning the same subject have equivalent names in the declaration and the constraint part:
Declaration part: ctrl_control_function_element;
Constraint part: Ctrl_control_function_element.
The name of the modified constraint describes the particularity of the modified constraint.
EXAMPLE: Ctrl_cc_mand_only (common control message which contains only the mandatory IEs).
If formal parameter lists are used, the variable names are written in lowercase. The variable name is the same as the
name of the element it is representing.
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SIST EN 300 324-4 V3.1.1:2005
14 ETSI EN 300 324-4 V3.1.1 (2001-03)
6.1.3 Dynamic part
6.1.3.1 TC
The identifier of the TCs is constructed in the same way as for the TPs described in EN 300 324-3 [3], clause 5.1.1, with
the exception that "TP" is replaced by "TC":
TP identifier: TP1324S1106;
TC identifier: TC1324S1106.
6.1.3.2 Test steps
In TCs, test steps as well as local trees are used. To allow an easy distinction, the following naming is applied:
local tree: LTS_[local_tree_name];
test step: STEP_[test-step_name].
6.1.3.3 General aspects
All verdict assignments are labelled. To allow an exact identification in which table the verdict was assigned, the
following name convention is applied:
BtestBody
CS Check State test steps
DDefault
E Error handling test steps
PO POstamble
PR PReamble
StestStep
Combinations of labels are also possible.
EXAMPLE: DPR --> label which is used in a default for preambles.
6.1.4 ATS abbreviations
These abbreviations are used to shorten identifier names:
addr address
act activate
acc access
ack acknowledgement
cau cause
cc common control
cfe control function element
cfi control function identifier
com common
ctrl control
dl data link
enq enquiry
est establish
func function
ind indication
interf interface
mand mandatory
mety message type
mod modified
par parameter
pc port control
pd protocol discriminator
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SIST EN 300 324-4 V3.1.1:2005
15 ETSI EN 300 324-4 V3.1.1 (2001-03)
perform perform
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