Distributed control time division exchange

Details Distributed control time division exchange Distributed control time division exchange

1982-04-05

1985-01-01

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, H04Q 1104

Patent

active

044919441

ABSTRACT:
A time division exchange controlled by a plurality of control units (UC, UCP), terminal units (UT) and markers (MQ). The control units are connected to each other and to the markers by a data interchange network (RIT) of a type which provides point-to-point serial connections. The network is duplicated and operates using a semaphore procedure. Access to the network is controlled by a duplicated controller (DR). Two-way multiplex links (LX) are provided over switched paths which could be used for voice or data switching. They are also used using a semaphore procedure and serve to provide connections between the control units and the terminal units. These connections are established via the exchange switching network. The invention is applicable to telephone switching or to data switching at subscriber or trunk level.

REFERENCES:
patent: 4107480 (1978-08-01), Schlichte
patent: 4201891 (1980-05-01), Lawrence et al.
patent: 4317193 (1982-02-01), Joel
patent: 4356563 (1982-10-01), Viale
International Switching Symposium, May 11, 1979, Paris, F. Anceau et al., "Project of an Architecture for the Command of an Electronic Switching System", pp. 608-614.
GEC Journal of Science and Technology, vol. 45, No. 3, 1979, J. C. D. Nissen et al., "A Fault-Tolerant Multimicroprocessor for Telecommunications and General Applications", pp. 116-122.
International Conference on Communications, Jun. 1979, Boston, U.S.A., J. Okuda et al., "New Architecture for Public Digital Telephone Switching System", pp. 12.2.1 to 12.2.5.

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