User Guide

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Failure 4: No ringing when incoming a call
 Please make sure the handset is completely hung on the base
 Please adjust the volume + key on keyboard when on-hook the
phone, Observe the display of ―volume‖ prompt. Please pay
attention that the volume key in on-hook and off-hook situation is to
adjust the ring volume and media volume (call volume) separately.
These two adjustments are unrelated. Adjusting the volume won’t
change ring volume when off-hook the phone.