ETSI Conformance Testing

Conformance testing is done to determine whether a system meets a specified standard. ETSI has over ten years' experience producing conformance test specifications for UMTS, IPv6, HiperMAN, WiMAX, GSM, DECT, TETRA, ISDN, VoIP and other key technologies. These test specifications are used by manufacturers as a basis for internal development testing.

ETSI test specifications are usually developed by a Specialist Task Force (STF), which is a group of experts recruited from the ETSI membership and managed by the Centre for Testing and Interoperability.

Conformance Testing for Interoperability

ETSI test specifications are designed to concentrate on areas critical to interoperability, including testing an implementation's reaction to erroneous behaviour. The goal is conformance testing for interoperability. This should not be confused with interoperability testing, which is a useful, but different, activity. The two approaches are complementary rather than competitive, which is why ETSI also provides a Plugtests Service for interoperability events for standards and product validation. A focused set of conformance tests can provide an excellent framework for subsequent interoperability testing.

Conformance Testing feedback into Standards Making Process

In many cases, development of the test specifications gives valuable feedback to the base standards. The test specifiers make a special effort to ensure that their experiences are fed back to the relevant ETSI technical committee. However, development of the base standard and of test specifications must be done in a coordinated and timely manner for this input to be effective.

Download the Methods for testing and Specification technology leaflet
Download the Global Testing Language (TTCN3) technology leaflet
Download the IMS Network Testing technology leaflet



Testing Methodology Respected by ETSI

ETSI follows the well-proven testing methodology defined in ISO/IEC 9146. This standard, which covers the entire testing process, provides an excellent basis for the development of high-quality test specifications.

The following diagram shows the development of test specifications process, acronyms are explained below.

Diagram showing development of test specifications process

Test specifications development process

The Implementation Conformance Statement (ICS) is a checklist of the capabilities supported by the Implementation Under Test (IUT). It provides an overview of the features and options that are implemented. The ICS can be used to select and parameterise test cases and as an indicator for basic interoperability between different products.

The Test Suite Structure and Test Purpose (TSS&TP) are derived from the relevant base standards. They provide an informal, easy-to-read description of each test, concentrating on the meaning of the test rather than detailing how it may be achieved. Test Purposes are grouped into a logical Test Suite Structure according to suitable criteria (basic interconnection, error handling, functionality etc.).

The Abstract Test Suite (ATS) is the entire collection of Test Cases. Each Test Case specifies the detailed coding of the Test Purposes, written in the standardized test specification language TTCN.

The Implementation eXtra Information for Testing (IXIT) contains additional information (specific adresses, timer values etc.) necessary for testing.

The Executable Test Suite (ETS) can be quickly and easily implemented from the ATS using the TTCN compilers available on most modern test tool platforms.

The following is a list of the 20 latest published ETSI standards on conformance testing.

A full list of related standards in the public domain is accessible via the ETSI standards search. Via this interface you can also subscribe for alerts on updates of ETSI standards.

Keywords related to testing:

  • ATS (Abstract Test Suite)
  • TTCN
  • TTCN-3
  • PICS (Protocol Implementation Conformance Statement)
  • ICS (Implementation Conformance Statement)
  • TSS&TP (Test suite structure and Test purposes)
  • Testing
  • Conformance

For work in progress see the ETSI Work Programme on the Portal.

Standard No. Standard title.
TS 131 124 Universal Mobile Telecommunications System (UMTS); LTE; Mobile Equipment (ME) conformance test specification; Universal Subscriber Identity Module Application Toolkit (USAT) conformance test specification (3GPP TS 31.124 version 14.5.0 Release 14)
TS 131 120 Universal Mobile Telecommunications System (UMTS); LTE; UICC-terminal interface; Physical, electrical and logical test specification (3GPP TS 31.120 version 15.0.0 Release 15)
TS 131 213 Universal Mobile Telecommunications System (UMTS); LTE; Test specification for (U)SIM; Application Programming Interface (API) for Java Card (3GPP TS 31.213 version 15.0.0 Release 15)
TS 131 121 Universal Mobile Telecommunications System (UMTS); LTE; UICC-terminal interface; Universal Subscriber Identity Module (USIM) application test specification (3GPP TS 31.121 version 15.0.0 Release 15)
TS 134 131 Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Test Specification for C-language binding to (Universal) Subscriber Interface Module ((U)SIM) Application Programming Interface (API) (3GPP TS 34.131 version 15.0.0 Release 15)
TS 155 252 Digital cellular telecommunications system (Phase 2+) (GSM); Specification of the GEA5 encryption and GIA5 integrity algorithms for General Packet Radio Service (GPRS); Implementers' test data (3GPP TS 55.252 version 15.0.0 Release 15)
TS 146 007 Digital cellular telecommunications system (Phase 2+) (GSM); Half rate speech; Test sequences for the GSM half rate speech codec (3GPP TS 46.007 version 15.0.0 Release 15)
TS 131 122 Universal Mobile Telecommunications System (UMTS); LTE; Universal Subscriber Identity Module (USIM) conformance test specification (3GPP TS 31.122 version 15.0.0 Release 15)
TS 138 508-1 5G; 5GS; User Equipment (UE) conformance specification; Part 1: Common test environment (3GPP TS 38.508-1 version 15.0.0 Release 15)
TS 138 523-2 5G; 5GS; UE conformance specification; Part 2: Applicability of protocol test cases (3GPP TS 38.523-2 version 15.0.0 Release 15)
TS 155 253 Digital cellular telecommunications system (Phase 2+) (GSM); Specification of the GEA5 encryption and GIA5 integrity algorithms for General Packet Radio Service (GPRS); Design conformance test data (3GPP TS 55.253 version 15.0.0 Release 15)
TR 143 058 Digital cellular telecommunications system (Phase 2+) (GSM); Characterisation, test methods and quality assessment for handsfree Mobile Stations (MSs) (3GPP TR 43.058 version 15.0.0 Release 15)
TS 131 121 Universal Mobile Telecommunications System (UMTS); LTE; UICC-terminal interface; Universal Subscriber Identity Module (USIM) application test specification (3GPP TS 31.121 version 14.5.0 Release 14)
TS 155 217 Digital cellular telecommunications system (Phase 2+) (GSM); 3G Security; Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 2: Implementors' test data (3GPP TS 55.217 version 15.0.0 Release 15)
TS 155 218 Digital cellular telecommunications system (Phase 2+) (GSM); 3G Security; Specification of the A5/3 encryption algorithms for GSM and ECSD, and the GEA3 encryption algorithm for GPRS; Document 3: Design conformance test data (3GPP TS 55.218 version 15.0.0 Release 15)
TS 155 242 Digital cellular telecommunications system (Phase 2+) (GSM); Specification of the GIA4 integrity algorithm for General Packet Radio Service (GPRS); Implementers' test data (3GPP TS 55.242 version 15.0.0 Release 15)
TS 155 243 Digital cellular telecommunications system (Phase 2+) (GSM); Specification of the GIA4 integrity algorithm for General Packet Radio Service (GPRS); Design conformance test data (3GPP TS 55.243 version 15.0.0 Release 15)
TS 138 509 5G; 5GS; Special conformance testing functions for User Equipment (UE) (3GPP TS 38.509 version 15.0.0 Release 15)
TR 146 085 Digital cellular telecommunications system (Phase 2+) (GSM); Subjective tests on the interoperability of the Half Rate / Full Rate / Enhanced Full Rate (HR/FR/EFR) speech codecs, single, tandem and tandem free operation (3GPP TR 46.085 version 15.0.0 Release 15)
TS 146 054 Digital cellular telecommunications system (Phase 2+) (GSM); Test sequences for the GSM Enhanced Full Rate (EFR) speech codec (3GPP TS 46.054 version 15.0.0 Release 15)