On the outside of your pod / wall there is usually a green light on when you get in your seat. This tells the FA it is in the upright position for take off and landing. I have tried to uplaod a picture to show it more clearly but obviously failed.http://heelsfirsttravel.boardingarea...class-jfk-hkg/ Look at this and you will understand. I am confused if you press the call button if a light comes on over your seat or on this wall.