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C300 User Guide
E
nd a call
Press
.
R
ecord a call
If you connect a USB drive to the USB type-A connector of the C300, you can record the audio of phone
calls to the USB drive. All recorded media files are stored in a predefined directory with the model
name. For example: root/C300. The filename format is model no. _ date (yymmdd) _ time (hhmmss).
For example: C300_210610_09h30m12s.wav.
To start/stop recording, press
repeatedly.
Note:
•
The speakerphone must be on and the battery must not be low.
•
Warning: Please check your local laws before recording calls. The laws in your area may
require that you inform all parties involved in the call before the call can be recorded.
V
olume
•
Press
briefly to increase the listening volume by one step.
•
Long-press
to increase the listening volume continuously.
•
Press
briefly to decrease the listening volume by one step.
•
Long-press
to decrease the listening volume continuously.
The respective circle LEDs turn green for two seconds to indicate the volume level. The more LEDs
turn green, the higher the volume level.
The C300 will synchronize playback volume with a USB-connected Windows PC or a Bluetooth-
connected iPhone or Android phone.
The C300 will synchronize phone call audio volume with a Bluetooth-connected iPhone or Android
phone.
M
ute
•
Press
to mute all six microphones. The circle LEDs turn red. If mute while recording, the
multicolored LEDs flash red ON 2s, OFF 0.5s repeatedly.
•
Press
again to unmute the microphones.
•
Press
while the speakerphone is ringing to temporarily mute the ringing tone.
C
onnecting a headset
To ensure privacy during a phone call, you can connect a headset to the 3.5mm jack of the C300. The
audio will be played through the headset.
. While recording, the circle LEDs flash red ON 0.5s, OFF 2s
15
Using the C300
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