NCT Group i30sx - Manual (Page 75)

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Mute
To view or reset a Call Timers option:
NOTE: The values displayed by Call Timers should not be used for
billing. Call timers are estimates only.
Mute
Use the Mute feature to listen to incoming audio without allowing sound from
your phone’s microphone to be transmitted over the phone line.
To turn mute on:
While mute is on, UNMUT appears as a display option and Mute appears in the
text display area.
To turn mute off:
2 Press S to scroll to Call Timers.
3 Press C under SELECT.
1 From the Call Timers menu, press S to scroll to the Call Timers
option you want to view or reset.
2 Press C under SELECT.
3 If the feature does not include an option to reset or you do not wish to
reset the option, press
C under DONE when you are finished viewing.
To reset a feature, press C under RESET. When the confirmation
screen appears, press C under YES to confirm the reset.
While on an active call, press C under MUTE.
Press C under UNMUT.