Communications device for short range, network independent use consists of portable transmitter and receiver unit that operates in short range and can transmit voice, data and pulses

摘要

The communications device consists of a portable transmitter and receiver unit that operates in the short range and can transmit voice, data and pulses. Identical devices can communicate with each other individually or in groups and can be selected at random or directly. The device possesses mobile telephone characteristics or can be connected to such devices.