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– “On”: Backlight is dimmed.
– “Off”: Backlight turns off after 10 seconds of charging.
*6 Turn this feature off if you prefer not to hear key tones while you are dialling or
pressing any keys, including confirmation tones and error tones.
*7 If you subscribe to a Caller ID service and want to view the caller’s information
after lifting up the handset to answer a call, turn off this feature.
*8 The recall/flash time depends on your telephone exchange or host PBX. Contact
your PBX supplier if necessary.