What does fully intergrated mean.
In what context?
fully integrated glass cockpits (avidyne, garmin).
Everything talks to everything else!
Basically all of the instrumentation systems and some aircraft systems are controlled and/or displayed in one place.
Ex: The primary flight instruments, navigation, engine instruments, environmental controls, aircraft controls (flaps, spoilers, gear), transponder, traffic avoidance, weather, yadda all in one or two devices.