Handset (Model-Dependent)
The handset is directly connected to the phone module (PHM). The handset is located in the center console beneath the cover.
Phone module (PHM) decides if the call is to be connected via handsfree or handset based on the set's hook signal. When the set is located in its holder, then all voice calls are connected via handsfree.
The set is activated when it is removed from the holder. Note that the voice call does not pass via the handset if it is lifted when an incoming call arrives or outgoing call is started with the ENTER button. Then you have to put down the set and lift it again to take the call via the handset. The cause of this is to avoid lost sound when the handset is lifted off by mistake.
The hook signal to the phone module (PHM) is controlled by a magnet switch located in the set. The switch is closed by a magnet located in the holder.
There are diagnostics for the handset.