Call Volume And Tone - Fysic FX-3930 Mode D'emploi

5.7 Call volume and tone:

ATTENTION: EXCESSIVE VOLUMES CAN
LEAD TO HEARING LOSS. IF MULTIPLE
USERS ARE USING THE TELEPHONE,
ALWAYS SET THE VOLUME TO NEUTRAL AFTER
EACH CALL.
ATTENTION: DANGER DUE TO THE
PRESENCE OF EXTREMELY HIGH
MAXIMUM VOLUME
volume
press to increase the volume or
press to decrease the volume,
these volume buttons control the
volume of both the receiver and the
speaker
amplifier:
press the +40dB button to switch on
the amplifier, press again to turn off
the amplifier,
this function is only available in com-
bination with the receiver
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