A telephone apparatus includes a telephone set consisting of a base unit and a handset removably mounted on the base unit. The apparatus also includes a transmitter/receiver, and an adaptor on which the base unit is mounted. The adaptor has an electrical connector which is electrically connected to the...http://www.google.com/patents/US5142573?utm_source=gb-gplus-sharePatent US5142573 - Telephone apparatus for radio communication with an adaptor
