Grandstream Networks DP755 User Manual page 14

Battery status
Not equipped with battery
Battery status
Battery empty
Battery status
Battery low
Battery status
Battery normal
Battery status
Battery full
Battery status
Charging
Signal status
Not subscribed
Signal status
Not in range
Signal status
Signal very low
Signal status
Signal low
Signal status
Signal normal
Signal status
Signal good
Signal status
Signal very good
Microphone MUTE Status
OFF – Not muted
ON – Muted