Abstract: An electronic interface device provides an interface between communication networks used by airplanes belonging to different groups. A proprietary simulation or training system operates on a first group of airplanes (VI) through a first ground station (T1). The airplanes of the first group and the ground station communicate with each other through a first communication network (R1). A second group of airplanes (V2) communicate with each other and with a second ground station (T2) through a communication network or system of the “LINK 16” type. The electronic interface device (TIS) couples the simulation system of the first group of airplanes to the “LINK 16” communication system of the second group of airplanes, thus extending to the airplanes equipped with the LINK 16 system the possibility of participating in training sessions with training airplanes equipped with the dedicated simulation and training systems.