Data communication system

Details Data communication system Data communication system

H - Electricity

04

M

344/15, 379/4

H04M 3/42 (2006.01) H04L 12/28 (2006.01)

Patent

CA 1278121

ABSTRACT OF THE DISCLOSURE A device is placed intermediate a data transmitter, such as a facsimile machine and the public switched telephone network, and selectively processes the calls in a predetermined manner. The signals sent by the transmitter are monitored by the process intermediary and when a particular type of signal is identified, the device processes this signal in a different manner. For example, a particular type of signal could be a long distance signal whereupon the device stores the long distance number, supplies a current back to the transmitting device indicating that the connection has not yet been made, and then completes a call to a data transmission network with the process intermediary then connecting the data transmission network with the transmitting device after the device has transmitted the long distance number to the data transmission system. The transmitting device believes the data transmission system is the identified receiver and the data transmission system will transmit the required protocol signals to the transmitting device whereafter the signals then are transmitted in the normal manner. The data transmission system will then transmit this signal through the data transmission system to a regional location and then retransmit the data over telephone lines to the receiver. The present invention also relates to the combination which includes modified transmitters, receivers, the public switched telephone network and the data transmission system which cooperate to transmit the data from the transmitter to the receiver in a more efficient manner as well as the process by which this combination transmits the information. A modified data receiver is taught which is actuated by means of a non-telephone communication link and the receiver does not require a dedicated line. The modification can be in the form of a process intermediary for use with existing receivers.

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