Patent ID: 7139394

Claim:
A telephone handset, comprising: a casing; a cavity formed in said casing; a first aperture in a wall of said casing whereby said cavity communicates with the exterior of said casing; a transducer having a membrane blocking said first aperture; a second aperture in a wall of said casing whereby said cavity communicates with the exterior of said casing; and a tube projecting into said cavity and one end of which is fixed to said wall of said casing and surrounds said second aperture, wherein the first aperture and the second aperture are on a common side of said casing, and wherein the handset casing is structured to be held by a user's hand and brought to a user's ear so that the first aperture is immediately adjacent or in contact with the user's ear for listening during a normal operation mode of the handset, wherein the transducer and the tube are contained together within the cavity formed in the casing having the first aperture and the second aperture on the common side thereof.