Call from internal unit (incoming)
On receiving a call from another internal unit, the display appears like this:
Incoming call from internal unit
The number at the top left indicates the position of the caller in the list of keys in the Intercom context. If the
caller is not present in the list, no number will be displayed.
Call from internal unit not belonging to the intercom context
If the caller is a switchboard, different icons appear at the top left of the display: