English | 11Theft Deterrent FaceplateThe faceplate of the unit can be detached andtaken with you, helping to deter theft.Removing the Faceplate1 Press the Release button.Drop open the faceplate.2 Drawing the faceplate to left side pull it toforward and remove it.• The faceplate is a precision piece of equipment andcan be damaged by shocks or jolts.• Keep the faceplate in its faceplate case whiledetached.• Do not expose the faceplate (and the faceplate case)to direct sunlight or excessive heat or humidity. Alsoavoid places with too much dust or the possibility ofwater splashing.Reattaching the Faceplate1 Align the shaft on the unit with thedepression on the faceplate.2 Push the faceplate in until it clicks.The faceplate is locked in place, allowing you touse the unit.TEL MuteThe audio system automatically mutes when acall comes in.When a call comes in"CALL" is displayed.The audio system pauses.Listening to the audio during a callPress the [SRC] button.The "CALL" display disappears and the audiosystem comes back ON.When the call endsHang up the phone.The "CALL" display disappears and the audiosystem comes back ON.• To use the TEL Mute feature, you need to hook upthe MUTE wire to your telephone using a commercialtelephone accessory. Refer to Terminals> (page 27, 28).