A speakerphone with a jack or a plug to allow a full featured speakerphone to be used with a wireless telephone handset. In one embodiment, a jack is installed on a speakerphone. A cable can connect the speakerphone using this jack and a headset jack on wireless phone handset. In another embodiment, the cable is embedded in the speakerphone. In another embodiment, the speakerphone is operated by an internal power source.