9 data packet transmission communications equipment and systems which consisting of a computer terminal, a cellular base station and a cellular data switch, for the intended use of network overlay systems, data packet radio traffic, mobil and cellular data communication; data communications systems, consisting of a computer terminal, a cellular base station and a cellular data switch for meter reading, vehicle location maps, point of sale terminals, credit card validation, dispatch, security and alarm services; packetized data communications switched data transmission equipment and systems for cellular frequency bands; data packet radio systems; technical manuals, pamphlets, brochures or notebooks