RearviewSafety RVS-7500 - Manual (Page 53)

53
Number
display
Show the number you’re dialing
Calling Show current call state
Dial
Including extension, sound shift, call shift, conference
call and so on.
Mute Mute the microphone while keeping the call
Volume - Single click to decrease the volume gradually;
Volume + Single click to increase the volume gradually;
Hang up Single click and hang up
4.22.8 If there is an incoming call, it will show the caller ID and its number as 4-48
4-48
Return Keep call state and return to main interface
Caller ID Show caller ID