User's Manual
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USING MENU During a Call
1. Phonebook Search
You can find a phone number during a call. Press “Menu ()” and “1. Phonebook Search”.
2. Mute
To mute the microphone, press “Menu ()” and “2. Tx Voice Mute”. And to release muting the
microphone, press “Menu ()” and “2. Tx Voice Mute” again.
3. DTMF Mute
To mute the keytone, press “Menu ()” and “3. DTMF Mute”. And to release muting DTMF,
press “Menu ()” and “3. DTMF Mute” again.
4. Mic Volume
To increase the microphone volume, press “Menu ()” and “4. Mic Volume”. And scroll “
” to adjust the volume.