Yes but you can't just ''flick the switch'' at swanwick because thanks to the marvellous step forward in ergonomic design the ''switch'' is located between the 2 sockets with headsets plugged in, both of which are underneath a metal flap, which you can't lift without moving the strip board because the strip board rests on top of it!!! How anyone (Management I mean) can possibly think that that is a safe way to train (presuming you've read the letter lying in the ops room) is totally beyond me.