Abstract: The present invention relates to an airborne communication apparatus for or within an aircraft, a corresponding airborne communication system and a method of providing secure communication to and from the aircraft. The present invention is based on the concept of providing a redundant communication link from the ground station to the aircraft. The redundant communication link comprises a first communication link and at least a second different communication link, of which the first one is a conventional analogue communication link and the second one is a VoIP-based communication link. Due to the communication redundancy, the communication becomes more secure since the existence of a dual connection increase the availability of the communication link significantly.

Abstract: A mobile device on which an application software or application program is installed and working for performing a registration process to a registration server for an integration of the mobile device into an air traffic control (ATC) voice environment. The application software can subsequently be launched on the mobile device to establish a connection via IP (for instance 4G/5G) to the network of an Air Navigation Service Provider (ANSP). Based on a geolocation information provided to the application, the application connects the mobile device to an IT system (radio server) managing a proper communication frequency. This allows the user to receive every VHF transmissions on his mobile phone using the VHF ground based receivers of the ANSP. Once the user wants to transmit, he can press a push-to-talk (PTT) button on the interface of the application on the mobile device.

Abstract: The present invention relates to an airborne communication apparatus for or within an aircraft, a corresponding airborne communication system and a method of providing secure communication to and from the aircraft. The present invention is based on the concept of providing a redundant communication link from the ground station to the aircraft. The redundant communication link comprises a first communication link and at least a second different communication link, of which the first one is a conventional analogue communication link and the second one is a VoIP-based communication link. Due to the communication redundancy, the communication becomes more secure since the existence of a dual connection increase the availability of the communication link significantly.

Abstract: A voice quality measuring system is provided. The voice quality measuring system comprises a radio site, an air traffic control center, ACC, an internet protocol, IP, based communications system, connecting the radio site and the ACC, and at least one IP probe. The IP probe is configured to monitor IP traffic between the radio site and the ACC through the IP based communications system.

Abstract: A voice quality measuring system is provided. The voice quality measuring system comprises a radio site, an air traffic control center, ACC, an internet protocol, IP, based communications system, connecting the radio site and the ACC, and at least one IP probe. The IP probe is configured to monitor IP traffic between the radio site and the ACC through the IP based communications system.