To satisfy airports’ growing need for effective communication, suppliers count on their research and development departments to continuously improve the performance of their equipment. Expanding airport hubs, security requirements, increasing customer services and faster throughput thanks to self checking, self-boarding, and egates all lead to a need for more and more sophisticated communications systems. There is a tendency towards integrated modular solutions (telephone, public address system, flight management systems, databases, language selection, automatic announcements) capable of providing the necessary flexibility at a high level of security.