scope:

This European Telecommunication Standard (ETS) defines a simple and flexible test responder which enables the use of Abstract Test Suites (ATSs) for Transaction Capabilities (TC) independently from the actual TC-users which reside in a System Under Test (SUT).

No assumption is made about the actual implementation of the interface between this function and TC.

The availability of a standardized TC test responder has the following advantages:

- it makes it possible to write a unique ATS which can be executed against any TC implementation which resides in a system where the test responder is also implemented;

- it allows all the defined TC functionalities to be tested, irrespective of the sub-set of functionalities actually used by the TC-users which are available at the moment when an equipment is under test;

- it helps to isolate faults during testing, since the proper response to a TC message or component will be independent of the proper execution of a real TC-user operation;

- it allows the TC stack to be tested before being delivered to a customer for supporting one ore more particular TC-user applications;

- the test responder can even be used to perform stack-to-stack interoperability testing independently of any particular TC-user application.