Sepura's TETRA radios deliver excellent coverage, security and reliability through a scalable and cost-effective platform delivering outstanding audio through advanced audio processing and exceptional loudspeakers. TETRA has the major advantage over cellular mobile systems in being able to support a wide variety of specialised, instant Push-To-Talk (PTT) voice call applications, including group, broadcast and individual calling, not to mention Direct Mode Operation (DMO) communications.ДЄlso, unlike commercial cellular networks, TETRA provides coverage and capacity exactly where it is required, even during busy periods, and delivers much higher levels of redundancy, reliability, availability, robustness and security. Specifically designed for use by government agencies and emergency services, it has become the worldwide standard of choice for an increasing range of sectors seeking the best critical communications technology available. Additionally, TETRAвЂ™s interoperability in the event of a major incident means that public safety agencies such as police, fire and ambulance services can instantly communicate with transport staff. Its reliability, availability and security are determining factors in its success. TETRA offers a complete, resilient and totally secure, service-rich communications solution.Д¬urrently in operation in thousands of communications systems worldwide, it is a proven technology and, as an open, international standard вЂ“ defined by ETSI, the European Telecommunications Standards Institute, in 1995 вЂ“ it gives users access to a multi-vendor market. TETRA is a technology that was designed specifically for the private mobile radio market, with public safety features at the fore.

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