Step by Step
Turning the Microphone On and Off
To prevent the other party from listening in while you
consult with someone in your office, you can temporari-
ly switch off the handset microphone or the handsfree
microphone. You can also switch on the handsfree mi-
crophone to answer an announcement via the tele-
phone speaker (speaker call,
Precondition: You are conducting a call. The micro-
phone is switched on.
Press the key. The LED lights up.
Press the illuminated key. The LED goes out.
Select and confirm.
Press the key. The LED lights up
Enter the code for "on" or "off".
Speakerphone mode is not available with
optiPoint 500 economy and optiPoint 500 basic.
Making Calls – Basic Functions