Method and system for transmitting information through a telephone network

摘要

In a system for transmitting information through a telephone network, the sending device (2, 3) converts the information into a length of time of ringing. A transceiver (3) causes the receiving station (7) to ring for that length of time. The receiving station (7) determines the ringing time and converts it back to the information initially sent. The system enables data transmission avoiding costs for a telephone connection and is preferably applicable for truck fleet management. <IMAGE>