Spanish ENAIRE extends FREQUENTIS contingency communication and maintenance project for up to 12 years

  • Contract for expansion and maintenance of the voice communication backup systems for all major Spanish air traffic control (ATC) centres
  • Benefits to include increased capacity of air traffic controller radio and telephone resources improving the quality of contingency communications and resilience
  • Full integration into ENAIRE’S digital communication network
  • Extensive software maintenance element will prolong the system’s life span

Spanish air navigation service provider (ANSP) ENAIRE has selected Frequentis to complete an expansion of its contingency communication systems upgrade, known as Last Resort Voice.

Frequentis has been successfully collaborating with ENAIRE since 2020 to implement its IP-based voice communication solution across Spain, bringing on average one centre live per year. The latest contract expansion will include operational maintenance to extend the lifecycle of its systems. The systems are being provided to all major ATC centres as a backup system in the event of unavailability of the main voice communications.

“Frequentis has been providing ENAIRE with its VCS3020X IP-based voice communication system as a contingency system across nine locations in Spain since 2020,” says Hannu Juurakko, Frequentis Executive Vice President ATM Civil and Chairman of the ATM Executive Team. “Providing comprehensive maintenance services for those systems to keep them up to date and to protect ENAIRE’s investment is the next step in this process to maximise the life cycle of the system.”

The project period is six years, with two potential three-year extensions, guaranteeing provision and coverage of operational needs for the next decade. Full integration into ENAIRE’s internet protocol (IP) communication network will facilitate the migration to voice over IP (VoIP), replacing older analogue features.

“We are facing an ambitious project that will allow us to have a contingency voice communication system for our control centres, with all the capabilities for oral communications between controllers and with pilots. This will allow us to ensure the provision of air traffic control service in a more efficient way and with the use of cutting-edge digital technology,” says Enrique Maurer, CEO ENAIRE.

Jose Luis Rodriguez Castro, Director of Systems ENAIRE, Gerald Mohnl, Director ATM Communication Frequentis, Hermann Mattanovich, CTO Frequentis; © Frequentis
Gerald Mohnl, Director ATM Communication Frequentis; Hermann Mattanovich, CTO Frequentis; José Luis Meler Jordán, Director Air Navigation Services ENAIRE; Jose Luis Rodriguez Castro, Director of Systems ENAIRE, © Frequentis


Frequentis is a global supplier of communication and information systems for control centres with safety- critical tasks. The listed family company develops and markets its “control centre solutions” in the Air Traffic Management segment (civil and military air traffic control, air defence) and the Public Safety & Transport segment (police, fire brigades, emergency rescue services, railways, coastguards, port authorities). With a market share of 30%, Frequentis is the world market leader in voice communication systems for air traffic control. Frequentis is also the global leader in aeronautical information management and aeronautical message handling systems.

As a global player with around 2,200 employees (full-time equivalents/FTE), Frequentis has a global network of companies and representatives in more than 50 countries. Its head office is in Vienna, Austria. Frequentis’ products, services, and solutions are used at more than 45,000 operator working positions in around

150 countries. Shares in Frequentis are traded on the Vienna and Frankfurt stock exchanges; ISIN: ATFREQUENT09, WKN: A2PHG5. In 2022, revenues were EUR 386.0 million and EBIT was EUR 25.0 million.

Wherever Frequentis’ systems are used, safety-critical operators bear responsibility for the safety of other people and goods. The company also works towards a more sustainable future through its air traffic optimisation solutions.

For more information, please visit
Jennifer McLellan, Global Media Relations Manager, +44 2030 050 188
Barbara Fuerchtegott, Head of Communications/Company Spokesperson, +43 1 81150-4631
Stefan Marin, Head of Investor Relations, +43 1 81150-1074