What's the difference between the telephone systems of Airbus and Boeing?

The communication systems of Airbus and Boeing are different in three aspects: different hardware devices, different software systems and different functional characteristics.

1. Different hardware devices: The communication systems of Airbus and Boeing use different hardware devices. Airbus uses Terez brand hardware equipment, while Boeing uses Honeywell brand hardware equipment.

2. The software system is different: the software system of the call system is also different. Airbus A320 series uses Terez T3CAS system, and Boeing aircraft uses Honeywell KGS system.

3. Different functional characteristics: The communication systems of the two companies are also slightly different in functional characteristics, but these differences are not obvious to ordinary passengers.