FAs are not allowed to cancel the service buttons by themselves in SQ?

[sutrakhk]

Perhaps they do not wish to touch the button, who knows where the passenger's hands have been!

Well, I think only a few of passengers would use the overhead call button and most of them use the one in the remote control.

From what I understand, by reseting the call button on the passenger service panel, it will cause the call button on the passenger handset to be non-functioning for the remainder of the flight until a eX2 reboot is done for the seat.

Yes the reset can be done midflight, but this will cause the passenger to lose any settings (i.e. playlists, started movies etc...)

Do you know which system the TG A340-600's using? I pressed the call button twice during taxiing for a seat-belt extension but the light gone without anyone coming...