Multiplex communications – Wide area network – Packet switching
Patent
1994-09-12
1996-09-03
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 79, 370103, 3701101, 379 96, 379 98, 375222, 375357, 371 30, H04B 156, H04L 524, H04L 704
Patent
active
055530630
ABSTRACT:
A system for full duplex real time two-way voice and data communication between a pair of computer terminal locations is disclosed. Analog voice signals are converted to digital form at one terminal location and those digital signals are interleaved with other digital information for transmission to the other terminal location. A value for the number of bytes in a data packet is first established, and then values for the number of bytes and the location dedicated to the transmission of voice information, control information, and data transmission within such fixed size data packets is established. Thereafter, a sequence of data packets with synchronization bytes in the voice byte locations is transmitted from each computer terminal location and received by the other of the terminal locations. Upon receipt thereof, an acknowledgement of the receipt is transmitted back to the originating location to indicate the establishment of synchronization between the two locations. Thereafter a sequence of data packets with the voice byte locations thereof dedicated to the transmission of voice information is transmitted from each of the computer terminal locations to the other.
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patent: 5036513 (1991-07-01), Greenblatt
patent: 5187591 (1993-02-01), Guy et al.
patent: 5214650 (1993-05-01), Renner et al.
patent: 5359644 (1994-10-01), Tanaka et al.
Blum Russell W.
Olms Douglas W.
Rickert Roger M.
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