Plantronics Blackwire C720 - Manual (Page 16)

16
Transmission range
If you are on a mobile call, you will hear the audio degrade as you move out of range of your
mobile phone. If you stay out of range, active calls will be suspended. Calls will be re-established
when you walk back into range.
Your Blackwire C710/C720 allows you to roam as far as 30 feet between devices before the call is
dropped. You will hear a voice prompt "Lost Connection" when the link is dropped.
Headset controls, indicators and voice prompts
Action LED Tone Voice prompt
Incoming PC call
alert N/A Rapid green flash Programmable
ringtone N/A
PC Call answer/end Short press the PC
Talk button
Short green flash Answer: Single low
tone followed by low-
low-high tones End:
Single low tone N/A
PC Call “Flash” Two second Press
the PC Talk Button Short green flash Low Tone N/A
Adjust the listen
volume (during a
call) Press volume up/
volume down bar Single PC LED
flash Tone at each change
in volume. Double
tone when min/max
volume level reached N/A
Muting your
microphone Press and release
the Mute Button On: Mute LED On
Off: Mute LED Off On: Low-High Tones
Off: High-Low Tones On: “Mute On”
Off: “Mute Off”
Mobile (Bluetooth)
Power on/off Press the Mobile
Talk button for 5
seconds On: solid blue for 2
seconds
Off: solid red for 2
seconds N/A On: "Power on"
followed by "Phone
Connected",
"No Phone is
connected", or
"Pairing".
Off: "Power off"
Check if Mobile
(Bluetooth) is
powered on Short press the
Mobile Talk button Short blue flash Short Low Tone N/A
Incoming Mobile
call alert N/A Rapid blue flash Programmable
ringtone N/A
Mobile Call answer/
end Short press the
Mobile Talk button Short blue flash Answer: Single low
tone followed by low-
low-high tones
End: Single low tone N/A