Method for transmitting data in a telecommunications exchange

Details Method for transmitting data in a telecommunications exchange Method for transmitting data in a telecommunications exchange

1985-10-04

1987-04-28

Orsino, Jr., Joseph A.

Multiplex communications

Wide area network

Packet switching

370 60, 370 89, H04J 324

Patent

active

046619526

ABSTRACT:
A method of transmitting data in a telecommunications exchange via a ring line system which allows information items to be transmitted in periodically recurring pulse frames. The pulse frames are split into at least two sub-frames, where in the first sub-frame the information is transmitted in a continuous transmission process whereas in the second sub-frame the information is transmitted in a burst process. The first sub-frame is divided into time slots which are allocated, as time channels, to a subscriber station for the establishment of a connection, such as a speech connection. In the second sub-frame the time slots are combined to form one single data channel for the transmission of data bursts. Access to the second sub-frame is gained by means of an item of so-called token information. Also transmitted as the data burst is information which contains a statement concerning the free/seized state of the time channels in the first sub-frame and which serves to bring up-to-date corresponding tables at the subscriber stations.

REFERENCES:
patent: 4154983 (1979-05-01), Pederson
patent: 4367549 (1983-01-01), Vachee
"Signaling and Frame Structures in Highly Decentralized Loop Systems", Zafiropulo et al., pp. 309 to 315, 1972.
"Carthage: A multiservice Local Network on a Fiber Optics Loop", J. Favre, Local Computer Networks, 1982.

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