Described as the most fantastic public communications device of the year , a telephone is now being developed in the United States that can be carried with you . Completely portable , it permits a caller to dial a number and receive calls in much the same way he would if in the office or at home . Unlike push to talk walkie-talkies , it is a lineless telephone that provides simultaneous two way conversations as well as dialing and ringing . The unit connects with a telephone network via a radio link to a conventional phone . Model of the portable telephone is being used here by C E Paul of Bell Telephone Laboratories , New Jersey , USA 1 October 1967