Siemens optiPoint 500 economy User Manual page 15

Step by Step
u v
or To raise or lower the volume, keep pressing the keys un-
til the desired call volumeis set.
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Making Calls – Basic Functions
Tell the other party that you are using speak-
erphone mode.
The speakerphone works bests at a low re-
ceiving volume.
The ideal distance between the user and the
telephone set in speakerphone mode is
about 50 cm (approx. 20 inches).
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