scope:

This European Telecommunication Standard (ETS) contains the Abstract Test Suite (ATS) specification for the Network Layer (NL), Circuit Mode Basic Services (CMBS) of the Inter-exchange signalling protocol, for Private Integrated Services Networks (PISN).

The objective of this ATS specification is to provide conformance tests which give a high probability of inter-operability of the NL. The ATS specification covers the procedures described in ETS 300 172 [1].

The ISO standard for the methodology of conformance testing (ISO/IEC 9646-1 [3], ISO/IEC 9646-2 [4] is used as basis for the test methodology.

This ATS specification is applicable to implementations which support either a Basic Rate or a Primary Rate access interface, or both, operating over a leased line. It is applicable to various PINX roles, i.e. Originating, Terminating, Transit, Incoming/Outgoing Gateway.

Annex A provides the Partial Protocol Implementation eXtra Information for Testing (PIXIT) proforma of this specification.

Annex B provides the Protocol Conformance Test Report (PCTR) proforma of this specification.

Annex C provides the Tree and Tabular Combined Notation (TTCN) part of this specification.