HazelNuts39;
Re, "Is there a handset in the cockpit to contact the cabin crew?"
Yes, the control panel for the handset is on the overhead panel and the handset is mounted on the aft pedestal, captain's side. The "Cabin Rest" is a call to the Cabin Crew Rest Area/Module. In some aircraft it is a permanent installation, usually in the aft end of the aircraft below the passenger deck whereas the portable crew module, as on AF447, is located just aft of door L3 below the passenger deck.
As shown on the panel, there are also communications to the Flight Crew Rest area wherever that may be - the asterisk inside the triangle means, "as installed". On the B777 it is upstairs; I don't know what the arrangement is on AF's A330's. The one with which I'm familiar was seat in Business that would fully recline and was curtained off. In this arrangement, there are no communications at the seat, so any urgent need for the crew member, (normally the captain) would have to be first communicated to one of the F/As who would then go to the seat and alert the crew member.
