Data control for telephone system

Details Data control for telephone system Data control for telephone system

1984-06-21

1986-05-06

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

455 58, H04J 312

Patent

active

045876525

ABSTRACT:
In a telephone system, particularly a mobile radio-telephone system, incorporating statistical multiplexers and control concentrators for the arranging and formatting of digitized data, the data is formatted with operational codes designating specific meaning and any one of a plurality of levels of protection to be offered data transmitted via the telephone system. A back-up memory is connected to the statistical multiplexer to enable a retransmission of a batch of data in the event that the batch had been received with error. Full duplex communication is provided. A circular sequence number interleaved among batches of the data is utilized by an error detector at a receiving site to determine the presence of all portions of a batch of data. Transmission of specified operational codes and additional data as required in the reverse direction commands a retransmission and also provides for acknowledgement of receipt of a data batch with and without error.

REFERENCES:
patent: 4144409 (1979-03-01), Utano et al.
patent: 4144412 (1979-03-01), Ito et al.
patent: 4144496 (1979-03-01), Cunningham et al.
patent: 4242538 (1980-12-01), Ito et al.
patent: 4352955 (1982-10-01), Kai et al.
patent: 4475010 (1984-10-01), Huensch et al.
patent: 4481670 (1984-11-01), Freeburg

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