Summary

Recommendation ITU-T Z.164 defines the operational semantics of TTCN-3 (Testing and Test Control Notation 3). The operational semantics are necessary to unambiguously interpret the specifications made with TTCN-3. This Recommendation is based on the TTCN-3 core language defined in ITU‑T Z.161.

This Recommendation is technically aligned with ETSI ES 201 873-4 V4.2.1 (2010-07).