Multiplex communications – Wide area network – Packet switching
Patent
1985-09-23
1988-11-01
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
340310A, 34082505, H08J 300, H08M 1104
Patent
active
047824824
ABSTRACT:
A communications system for simultaneously conveying voice and data messages is provided in accordance with the teachings of the present invention. In the communications system disclosed a ring transmission medium for the serial transmission of message information is provided. A plurality of taps are disposed along the ring transmission medium and each of the plurality of taps acts to receive connections from a communications module having at least an input and an output and acts to connect the communications module to the ring. Each of the plurality of taps is configured to have its inputs and outputs connected to the ring and act when no communication module is connected thereto to convey message information on the ring directly between the input and outputs of the tap. When a communications module is connected to that tap, message information is applied from the ring to the input of the communications module and from the output of the communications module to the ring transmission medium. A plurality of individual telephone stations for communicating voice messages are connected to the ring through individual ones of the taps wherein each of the telephone stations takes the form of a communications module having a basic component nucleus for interfacing with the ring and at least one additional component for performing telephone station functions. A data access unit for connection to one of the plurality of taps acts to couple data messages to the ring. The data access unit also includes the basic component nucleus for interfacing with the ring and at least a further component for coding digital data applied thereto. The data access unit may be connected to terminal devices or the like.
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de la Torre Carlos Hita
Kiatipov Edmundo V.
Alcatel Standard Electrica S.A.
Olms Douglas W.
Scutch III Frank M.
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