The installation of the GSM phone consists of the installation of a GSM phone in the cockpit and an external antenna. The phone is fully integrated in the cockpit intercom system.

The GSM phone is a robust GSM 850/900/1800/1900 MHz phone. The phone is 24 VDC powered, avoiding the need for a converter. The phone audio lines are integrated in the intercom system through the use of a NAT AA34-300 matching unit.