Integrated Services Digital Network (ISDN); Narrowband Multi-service Delivery System (NMDS); Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (NTN side)

Upgrade of EN 301 141-4 test specification.

Digitalno omrežje z integriranimi storitvami (ISDN) – Ozkopasovni večstoritveni dostavni sistem (NMDS) – 4. del: Zgradba preskušalnega niza in namen preskušanja (TSS&TP) – Specifikacija za omrežno plast (stran NTN)

General Information

Status
Published
Publication Date
31-Dec-2004
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
01-Jan-2005
Due Date
01-Jan-2005
Completion Date
01-Jan-2005

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SIST EN 301 141-4 V1.1.1:2005
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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.PHQIntegrated Services Digital Network (ISDN); Narrowband Multi-service Delivery System (NMDS); Part 4: Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer (NTN side)35.100.30Omrežni slojNetwork layer33.080Digitalno omrežje z integriranimi storitvami (ISDN)Integrated Services Digital Network (ISDN)ICS:Ta slovenski standard je istoveten z:EN 301 141-4 Version 1.1.1SIST EN 301 141-4 V1.1.1:2005en01-januar-2005SIST EN 301 141-4 V1.1.1:2005SLOVENSKI

STANDARD
SIST EN 301 141-4 V1.1.1:2005

ETSI EN 301 141-4 V1.1.1 (2002-02)European Standard (Telecommunications series) Integrated Services Digital Network (ISDN);Narrowband Multi-service Delivery System (NMDS);Part 4: Test Suite Structure and Test Purposes (TSS&TP)specification for the network layer (NTN side) SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 2

Reference DEN/SPAN-130103-4 Keywords access, basic, ISDN, layer 3, NMDS, PSTN, TSS&TP, user ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE

Tel.: +33 4 92 94 42 00
Fax: +33 4 93 65 47 16

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Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the current status of this and other ETSI documents is available at http://portal.etsi.org/tb/status/status.asp If you find errors in the present document, send your comment to: editor@etsi.fr 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 2002. All rights reserved.
SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 3 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 Test Suite Structure (TSS)........................................................................................................................8 4.1 TSS overview.....................................................................................................................................................8 4.2 Test groups.........................................................................................................................................................9 4.2.1 Protocol groups.............................................................................................................................................9 4.2.1.1 PSTN protocol.........................................................................................................................................9 4.2.1.2 ISDN maintenance protocol....................................................................................................................9 4.2.2 Main test groups...........................................................................................................................................9 4.2.2.1 Valid Behaviour (V) tests........................................................................................................................9 4.2.2.2 Inopportune Behaviour (I) tests...............................................................................................................9 4.2.2.3 Syntactically Invalid Behaviour (S) tests................................................................................................9 4.2.2.4 Timer (T) expiry and counter mismatch tests..........................................................................................9 4.3 Test step structure.............................................................................................................................................10 4.3.1 State transitions...........................................................................................................................................10 4.3.1.1 PSTN protocol.......................................................................................................................................10 4.3.2 Preconditions..............................................................................................................................................10 4.3.3 Preambles....................................................................................................................................................11 4.3.4 Postambles..................................................................................................................................................11 4.3.5 Status verification.......................................................................................................................................11 4.3.5.1 PSTN protocol.......................................................................................................................................11 4.3.6 Common test steps......................................................................................................................................11 4.4 Defaults............................................................................................................................................................11 4.5 Abstract Service Primitives (ASPs) and Protocol Data Units (PDUs).............................................................11 4.5.1 ASPs...........................................................................................................................................................11 4.5.2 PDUs...........................................................................................................................................................11 4.5.2.1 PSTN protocol.......................................................................................................................................11 4.5.2.2 ISDN maintenance protocol..................................................................................................................12 4.5.3 Information elements..................................................................................................................................12 4.5.3.1 Variable length information elements...................................................................................................12 4.5.3.1.1 PSTN protocol.................................................................................................................................12 4.5.3.1.2 ISDN Maintenance protocol............................................................................................................12 4.5.3.2 Single octet information elements.........................................................................................................12 4.5.3.2.1 PSTN protocol.................................................................................................................................12 4.5.3.2.2 ISDN Maintenance protocol............................................................................................................13 4.6 Timers and counters of the Abstract Test Suite (ATS).....................................................................................13 5 Test Purposes (TPs)................................................................................................................................13 5.1 Introduction......................................................................................................................................................13 5.1.1 TP naming convention................................................................................................................................14 5.1.2 Source of TP definition...............................................................................................................................14 5.1.3 Test strategy................................................................................................................................................14 5.1.4 Requirements not covered by TPs..............................................................................................................14 5.1.5 Initial state..................................................................................................................................................15 5.1.6 Test and data configuration requirements...................................................................................................15 5.2 PSTN protocol..................................................................................................................................................15 5.2.1 Valid behaviour tests (NMDS_NTN/PSTN/V)..........................................................................................15 5.2.1.1 State AN1..............................................................................................................................................15 5.2.1.2 State AN2..............................................................................................................................................16 SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 4 5.2.1.3 State AN3..............................................................................................................................................17 5.2.1.4 State AN4..............................................................................................................................................18 5.2.1.5 State AN5..............................................................................................................................................18 5.2.1.6 State AN7..............................................................................................................................................19 5.2.2 Inopportune behaviour tests (NMDS_NTN/PSTN/I).................................................................................20 5.2.2.1 State AN1..............................................................................................................................................20 5.2.2.2 State AN2..............................................................................................................................................21 5.2.2.3 State AN3..............................................................................................................................................21 5.2.2.4 State AN4..............................................................................................................................................21 5.2.2.5 State AN5..............................................................................................................................................22 5.2.3 Syntactically invalid behaviour tests (NMDS_NTN/PSTN/S)...................................................................22 5.2.3.1 State AN1..............................................................................................................................................22 5.2.3.2 State AN5..............................................................................................................................................24 5.2.4 Timer expiry and counter mismatch tests (NMDS_NTN/PSTN/T)............................................................25 5.2.4.1 State AN2..............................................................................................................................................25 5.2.4.2 State AN3..............................................................................................................................................25 5.2.4.3 State AN4..............................................................................................................................................25 5.2.4.4 State AN5..............................................................................................................................................26 5.2.4.5 State AN7..............................................................................................................................................26 5.3 ISDN Maintenance protocol.............................................................................................................................26 5.3.1 Valid behaviour tests (NMDS_NTN/ISDN/V)...........................................................................................26 5.3.2 Syntactically invalid behaviour tests (NMDS_NTN/ISDN/S)....................................................................27 Annex A (informative): Bibliography...................................................................................................28 History..............................................................................................................................................................29

SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 5 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 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 Integrated Services Digital Network (ISDN); Narrowband Multi-service Delivery System (NMDS), as identified below: Part 1: "NMDS interface specification"; Part 2: "Protocol Implementation Conformance Statement (PICS) proforma specification"; Part 3: "Test Suite Structure and Test Purposes (TSS&TP) specification for the data link layer (NTN side)"; Part 4: "Test Suite Structure and Test Purposes (TSS&TP) specification for the network layer

(NTN 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) specification for the NMDS Layer 2 PSTN-GW function (NTN side)"; Part 7: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) specification for the PSTN NMDS interface Layer 3 (NTN side)"; Part 8: "Abstract Test Suite (ATS) and partial Protocol Implementation eXtra Information for Testing (PIXIT) specification for the PSTN NMDS interface Layer 3 (LE side)".

National transposition dates Date of adoption of this EN: 8 February 2002 Date of latest announcement of this EN (doa): 31 May 2002 Date of latest publication of new National Standard or endorsement of this EN (dop/e):

30 November 2002 Date of withdrawal of any conflicting National Standard (dow): 30 November 2002

SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 6 1 Scope The present document contains the Test Suite Structure (TSS) and Test Purposes (TPs) for the Network layer (NWK) of a NMDS interface. The objective of the present document is to provide conformance tests giving a high probability of inter-operability of an Network Termination Node (NTN) and a Local Exchange (LE) from different manufacturers over the NMDS interface. The present document covers only the procedures described in EN 301 141-1 [1]. ISO/IEC 9646-1 [7] is used as the basis for the methodology of conformance testing. Concerning the Public Switched Telephone Network (PSTN) protocol testing, only the procedures defined in EN 301 141-1 [1] are covered by the tests defined in the present document. An Implementation Under Test (IUT), however, will have implemented a national PSTN protocol part as well. This requires that the tester generates messages containing the national PSTN protocol specific optional Information Elements (IEs), otherwise the IUT would not act on messages according to the PSTN protocol procedure definition. However, this does not provide a comprehensive test of the national PSTN protocol mapping specification, which is outside the scope of the present document. As the tests use PSTN messages containing optional IEs according to national specifications, the test result is only valid for the implemented national mapping of the V5.1 PSTN protocol. The present document does not cover tests related to functions of the bearer channel. Those functions should be tested in conjunction with testing of the national PSTN protocol mapping specification. The present document contains no requirements concerning NWK tests for Integrated Services Digital Network Basic Access (ISDN-BA). 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 301 141-1 (V2.1.1): "Integrated Services Digital Network (ISDN); Narrowband

Multi-service Delivery System (NMDS); Part 1: NMDS interface specification". [2] ETSI EN 301 141-2 (V1.3.1): "Integrated Services Digital Network (ISDN); Narrowband

Multi-service Delivery System (NMDS); Part 2: Protocol Implementation Conformance Statement (PICS) proforma specification". [3] ISO/IEC 7498-1: "Information technology - Open Systems Interconnection - Basic Reference Model: The Basic Model". [4] ISO/IEC 7498-2: "Information processing systems - Open Systems Interconnection - Basic Reference Model - Part 2: Security Architecture". [5] ISO/IEC 7498-3: "Information technology - Open Systems Interconnection - Basic Reference Model: Naming and addressing". [6] ISO/IEC 7498-4: "Information processing systems - Open Systems Interconnection - Basic Reference Model - Part 4: Management framework". [7] ISO/IEC 9646-1: "Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 1: General concepts". SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 7 [8] ETSI EN 300 324-1 (V1.2.3): "V interfaces at the digital Local Exchange (LE); V5.1 interface for the support of Access Network (AN); Part 1: V5.1 interface specification". [9] ETSI ETS 300 402-2 (1995): "Integrated Services Digital Network (ISDN); Digital Subscriber Signalling System No. one (DSS1) protocol; Data link layer; Part 2: General protocol specification [ITU-T Recommendation Q.921 (1993), modified]". 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the terms and definitions given in EN 300 324-1 [8] and the following apply: Abstract Test Case (ATC): Refer to ISO/IEC 9646-1 [7]. Abstract Test Suite (ATS): Refer to ISO/IEC 9646-1 [7]. data link layer: Refer to ISO/IEC 7498 [3] to [6]. implementation under test: Refer to ISO/IEC 9646-1 [7]. incorrect information element: specified information element carrying information element types not defined in EN 301 141-1 nor in EN 300 324-1 invalid PSTN information element: PSTN information element not according to national specific requirements invalid Protocol Data Unit: PDU which contains incorrect message format invalid PSTN message: PSTN message carrying information elements not according to national specific requirements lower tester: Refer to ISO/IEC 9646-1 [7]. network layer: Refer to ISO/IEC 7498 [3] to [6]. network termination: equipment providing the network side at the ISDN user-network interface for the basic access NOTE: This term is used in the present document to indicate network-terminating aspects of NT1 and NT2. physical layer: Refer to ISO/IEC 7498 [3] to [6]. Protocol Implementation Conformance Statement (PICS): Refer to ISO/IEC 9646-1 [7]. PICS proforma: Refer to ISO/IEC 9646-1 [7]. specified information element: information element identifier defined in EN 300 324-1 System Under Test (SUT): Refer to ISO/IEC 9646-1 [7]. Test Purpose (TP): Refer to ISO/IEC 9646-1 [7]. unspecified Information Element: information element identifier not defined in EN 301 141-1 nor in EN 300 324-1

valid information element: PSTN information element according to national specific requirements valid PSTN message: PSTN message carrying information elements according to national specific requirements SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 8 3.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AN Access Network ATC Abstract Test Case ATS Abstract Test Suite FE Function Element FSM Finite State Machine IE Information Element ISDN Integrated Services Digital Network ISDN-BA ISDN Basic Access IUT Implementation Under Test L3addr Layer 3 address LE Local Exchange NTN Network Termination Node NWK NetWorK layer PDU Protocol Data Unit PICS Protocol Implementation Conformance Statements PL Permanent Line PSTN Public Switched Telephone Network SUT System Under Test TP Test Purpose TSS Test Suite Structure UNI User Network Interface 4 Test Suite Structure (TSS) 4.1 TSS overview Figure 1 shows the structure of the NTN side NMDS test suite. • NMDS_NTN

• PSTN • Valid
• PSTN FSM AN States (AN1, AN2, AN3, AN4, AN5, AN7)
• Inopportune • PSTN FSM AN States (AN1, AN2, AN3, AN4, AN5, AN7)
• Syntactically Invalid • PSTN FSM AN States (AN1, AN2, AN3, AN4, AN5, AN7)
• Timers • PSTN FSM AN States (AN1, AN2, AN3, AN4, AN5, AN7) • ISDN • Valid
• Syntactically Invalid Figure 1: NMDS NTN TSS SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 9 4.2 Test groups 4.2.1 Protocol groups 4.2.1.1 PSTN protocol All tests in the PSTN protocol (NMDS_NTN/PSTN) test group are intended to verify as thoroughly as possible the various procedures of the NTN_PSTN_protocol entity. The following PSTN procedures are covered: - all path related normal operation procedures; - significant path related exceptional procedures; - the status enquiry procedure; - the error handling procedures; - the layer 3 error detection procedure. 4.2.1.2 ISDN maintenance protocol All tests in the ISDN protocol (NMDS_NTN/ISDN) test group are intended to verify as thoroughly as possible the various procedures of the NTN_ISDN_protocol entity. The following ISDN procedures are covered: - the status enquiry procedure; - the error handling procedures. 4.2.2 Main test groups 4.2.2.1 Valid Behaviour (V) tests Predefined state transitions are considered as valid. The test purpose in the Valid Behaviour test subgroup cover as far as reasonable the verification of the normal and exceptional procedures of the various FSMs. A valid test is a test where the message sequence and the message contents is considered as valid (no error indication shall be indicated). 4.2.2.2 Inopportune Behaviour (I) tests This test subgroup is intended to verify that the IUT is able to react properly in the case an inopportune protocol event occurring. Such an event is syntactically correct but occurs when it is not expected and an error indication is caused. 4.2.2.3 Syntactically Invalid Behaviour (S) tests This test subgroup is intended to verify that the IUT is able to react properly having received an invalid PDU. An invalid PDU is defined as a syntactically incorrect message and therefore an error indication is caused. 4.2.2.4 Timer (T) expiry and counter mismatch tests Different timers and counters are defined to supervise the various state transitions. SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 10 4.3 Test step structure General dynamic behaviours are described in test steps which can be called from all ATCs within the ATS: - state transitions; - preconditions; - preambles; - postambles; - status checks; - common behaviours. 4.3.1 State transitions The following clauses identify the test steps used in the ATS. In general, each test step represents a state transition. For example in the PSTN protocol, PSTN_NTN1_2 is the test step which brings the NTN PSTN_protocol_FSM from PSTN_path_state AN1 to PSTN_path_state AN2. The state transitions are declared in the parenthesis (originating state - destination state) which follow the test step names. PSTN: state transitions used to preamble and postamble the PSTN protocol before and after a test purpose can be performed. To test the NMDS interface certain sequences (i.e. preamble) shall be executed to reach the state which is the subject for the TPs. 4.3.1.1 PSTN protocol Refer to EN 301 141-1 [1] and EN 300 324-1 [8]. All messages sent within the test steps shall be valid PSTN messages. PSTN_AN1_2 On receipt of an originating call attempt (FE-subscriber_seizure) the IUT shall send the message ESTABLISH and enter the PSTN_path_state AN2 (Path initiated by AN). PSTN_AN2_3 On receipt of a FE-subscriber_release, the IUT shall enter the PSTN_path_state AN3. PSTN_AN1_4 On receipt of the event FE-line_information, the IUT shall send the ESTABLISH message and enter the PSTN_path_state AN4. PSTN_AN1_5 On receipt of the ESTABLISH message the IUT shall send the message ESTABLISH ACK and enter the PSTN_path_state AN5 (Path active). PSTN_AN5_7 On receipt of a SIGNAL message containing a faulty sequence number the IUT PSTN protocol shall send a DISCONNECT message and enter the PSTN_path_state AN7. 4.3.2 Preconditions The precondition step of a test group applies at the UP via the user interface as a Permanent Line (PL) condition. This line condition shall be permanent during all tests in that test group. SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 11 4.3.3 Preambles The preamble test step group contains the test steps needed for initialization of the IUT before testing the particular test purpose. All combinations of the test steps defined in clause 4.3.1.1 can be used to create preambles. Each preamble shall start from the IUT initial state as defined in clause 5.1.5. 4.3.4 Postambles After each ATC the IUT shall be brought back to the initial state as defined in clause 5.1.5. All combinations of the test steps defined in clauses 4.3.1.2 to 4.3.1.5 can be used to create postambles. 4.3.5 Status verification 4.3.5.1 PSTN protocol Based on EN 301 141-1 [1] and EN 300 324-1 [8], table 29, it is possible to identify the state of the IUT PSTN protocol FSM with valid PSTN messages. On receipt of a STATUS ENQUIRY message the IUT shall send a STATUS message and remain the same state. 4.3.6 Common test steps This test step group shall contain procedures which are used in more than one ATC. 4.4 Defaults The default section describes the behaviour in case of an unexpected test event. 4.5 Abstract Service Primitives (ASPs) and Protocol Data Units (PDUs) 4.5.1 ASPs The format of the two used ASPs is defined as described in ETS 300 402-2 [9]: - dl_data_req - dl_data_ind 4.5.2 PDUs 4.5.2.1 PSTN protocol - pstn_establish - pstn_establish_ack - pstn_signal - pstn_signal_ack - pstn_disconnect - pstn_disconnect_complete - pstn_status_enquiry SIST EN 301 141-4 V1.1.1:2005

ETSI ETSI EN 301 141-4 V1.1.1 (2002-02) 12 - pstn_status - pstn_MNT_status_enquiry - pstn_MNT_status - pstn_protocol_parameter 4.5.2.2 ISDN maintenance protocol - isdn_MNT_status_enquiry - isdn_MNT_status 4.5.3 Information elements 4.5.3.1 Variable length information elements 4.5.3.1.1 PSTN protocol - pstn_sequence_number - pstn_cadenced_ringing - pstn_pulsed_signal - pstn_steady_signal - pstn_digit_signal - pstn_recognition_time - pstn_enable_autonomous_ack - pstn_disable_autonomous_ack - pstn_cause - pstn_resource_unavailable - pstn_enable_metering - pstn_metering_report - pstn_attenuation - p

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