Zodiac is an acronym for ZOne DIgital Automated and enCrypted Communication.

It can be defined as a truly distributed digital nodal network providing circuit-switched services linked by highly secure Line of Sight or cable shots. For maximal security end-to-end encryption is provided.

Since the early eighties Thales Communications B.V. has been system responsible for Zodiac, participated in the definition and has been the main-contractor for the design, development and production of all phases in this program. In 1989 a fully Eurocom compliant tactical backbone communication system for 1 (NL/GE) ArmyCorps was introduced.