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M3904 Phone User Guide
3. Enter an index number between 00 and 09.
Handsfree Operation
To use Handsfree Operation to make calls:
1. If you want to use a Non-Prime Line, press a Line Appearance key, (the indicator
turns on).
2. Dial the number.
3. Communicate by using the speaker and the microphone.
To use Handsfree Operation to answer calls:
1. Press the flashing line key, (the indicator turns on).
2. Communicate by using the speaker and the microphone.
To hang up while using Handsfree Operation:
• Press .
To temporarily disable the microphone during Handsfree Operation:
• Press (the indicator flashes).
To re-enable the microphone and return to the conversation:
• Press (the indicator turns off).
To disable Handsfree Operation:
• Lift the handset.
To return to Handsfree Operation:
1. Press .
2. Hang up.
On-Hook Dialing
To dial without lifting the handset:
1. If you want to use a Non-Prime Line, press a Line Appearance key.
2. Dial the number.
3. Lift the handset.
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