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MD Evolution – Dialog 4223 Professional
Operations during a Call
To deactivate the loudspeaker function:
 Simply press this key once again.
The LED associated with this key is unlit, and your conversation once
again continues normally in handset mode only after 5 seconds (see
details below).
Changing from Handset to Handsfree
Mode
When you participate in an incoming or outgoing conversation
using the handset – with or without the loudspeaker function – you
can at any time, decide to continue the call in handsfree mode. To
do so:
 Press this key to activate the loudspeaker mode.
The LED associated with this key is lit, and the letters “ML” flash on
your extension’s screen. You have 5 seconds to replace the
handset.
d Replace the handset within 5 seconds.
Your conversation thus continues in handsfree mode. Both your
extension’s loudspeaker and microphone are active.
If you do not replace the handset within 5 seconds, only the loud-
speaker mode is activated on your extension.
Changing from Handsfree to Handset
Mode
Contrariwise, when you participate in an incoming or outgoing
conversation using handsfree mode, you can, at any time, decide
to continue the call in handset mode, providing you with more
privacy. To do so:
u Simply lift the handset.
Both your extension’s loudspeaker and microphone will be
automatically deactivated. Only the handset remains active.