when used with Local Control
of Control or
When lit, shows that a ringing
signal is being received at the
Local Control Unit.
Using dimmer, call light can be
adjusted to desired brightness.
Turn clockwise to dim,
counterclockwise to brighten.
This is where a Handset or similar
accessory for telephone communica-
tion and push-to-talk operation of the
radio set is connected.
Use audio cover when
not in operation.