BOAC, I don't understand whay you are talking about?
The analysis of the CVR revealed that there was sound nasal snoring and heavy breathing for nearly two hours, indicating that one of the two pilots—in all likelihood Serbian national Captain Zslatko Glucika, 55—had fallen asleep on his seat on the 200-minute flight of IX-812 that originated in Dubai (local time 1:10 am) on May 22.
I've been puzzled about the Effohs intercom calls going "on air", as this would be the last thing I would have time to do in what must been a high stress situation. However, if AIX -800's have a "press to talk" hot mike switch, rather than the type that stays in the hot mike position, it's possible he just pressed the wrong switch when he tried to talk to the captain. It's a two way switch on the yoke, press up for ATC, down for intercom. Easy to make a mistake.