TTCN-3

TTCN-3 (Testing and Test Control Notation version 3) is a strongly typed test scripting language used in conformance testing of communicating systems and a specification of test infrastructure interfaces that glue abstract test scripts with concrete communication environments. TTCN-3 has been developed by ETSI and its predecessor is TTCN-2. Despite sharing same fundamental concepts, TTCN-2 and TTCN-3 are essentially two different languages, the latter having simpler syntax and standardized adapter interfaces. TTCN-3 scripts can be combined with ASN.1 type definitions. ASN.1 is natively supported by major TTCN-3 tool vendors.

Applications

TTCN-3 has been used to deploy SIP, WiMAX, and DSRC test systems.

The Open Mobile Alliance has recently adopted a strategy of using TTCN-3 for translating some of the test cases in an enabler test specification into an executable representation.^[1]

The AUTOSAR project is promoting the use of TTCN-3 within the automotive industry.^[2]

Architecture

A typical TTCN-3 test system consists of:

• execution core that runs test cases (TE or test execution)
• SUT adapter implementing TRI SA interface that is responsible for network interface code
• platform adapter implementing TRI PA interface that is responsible for timers and external functions
• coding and decoding (TCI-CD interface)
• test control interface that uses TCI-TM API

See also

• TTCN
• ETSI

References

External links

• ETSI TTCN-3 web site
• Official TTCN-3 standard
• First TTCN-3 Quick Reference Card
• TTCN-3 language reference
• BTT - BroadBit Test Tool, open-source, multi-platform TTCN-3 test tool
• Elvior TestCast Test Tool, commercial, full-feature TTCN-3 test tool