User's Manual

27 Call Functions
Muting the Dial Tone (DTMF Tone)
1. During a call, press A [Options] and select “DTMF
Tones”, then press .
2. Press or to select “Off”, then press .
To unmute the dial tone, repeat step 1 and then
select “On” in step 2.
Muting the Microphone
1. During a call, press C [Mute] to mute the
microphone.
To unmute the microphone, press C [Unmute].