Talk loud and clear Share your calls The outstanding speakerphone brings the CD2 series to the centre of family life. Thanks to the sound level boost, conversations can really be shared with everyone around.The digital sound offers overall better dynamic range and more clarity.Hands free mode uses a built in loudspeaker to amplify the voice of the caller, allowing you to speak and listen during a call without holding the phone to your ear. This is especially useful if you want to share the call with others or take notes during a call.nbsp