Patent ID: 8768304

Claim:
An apparatus for providing an etiquette call mode, the apparatus comprising: a radio frequency (RF) unit configured to transmit a sending call and to receive a received call in a call mode; an audio processing unit; a control unit configured to control operations of the RF unit and the audio processing unit, to activate a normal call mode in which reception gain for the received call is set based on a volume key signal, and responsive to a user input selection to activate the etiquette call mode in which reception gain for the received call is automatically set to a minimum or near minimum value and transmission gain for the sending call is automatically set to a maximum gain value; wherein when the etiquette call mode is activated, the audio processing unit is controlled to: establish the transmission gain to the maximum gain value, establish the reception gain to the minimum or near minimum value, amplify the received call by means of the established reception gain to generate an amplified voltage, compare the amplified voltage to a predetermined maximum voltage and a predetermined minimum voltage of a predetermined reference level range, and responsive to the amplified voltage being greater than the predetermined maximum voltage or less than the predetermined minimum voltage, reduce the amplified voltage to be less than or equal to the predetermined maximum voltage or increase the amplified voltage to be greater than or equal to the predetermined minimum voltage, respectively, thereby limiting an output level of the amplified received call to be within the predetermined reference level range.