Multiplex communications – Wide area network – Packet switching
Patent
1980-09-25
1983-10-25
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 63, H04Q 1104
Patent
active
044123221
ABSTRACT:
A time division multiplex (TDM) switching network is disclosed in which at least part of the network comprises a space switching portion (TMS) and in which the need for duplication of the space switching portion, and like methods of achieving network reliability, is eliminated. Data from an incoming channel is partitioned into successive blocks, a prescribed number of which form a set of blocks. The blocks are of predetermined size. Each of the blocks of a set is switched via different paths of the space portion of the network. A single network fault can therefore cause the loss of only one block of data in a set. This loss can be made insignificant in the case of data representing telephone conversations. For data not representing telephone conversations, error checking and correcting information is added to the set before transmission through the space portion of the network and errors occurring during transmission are corrected thereafter.
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patent: 3736381 (1973-05-01), Johnson et al.
patent: 3920914 (1975-11-01), Reginer et al.
patent: 3983330 (1976-09-01), Tongl
patent: 4071702 (1978-01-01), Charransol et al.
patent: 4074077 (1978-02-01), Charransol et al.
patent: 4123624 (1978-10-01), Gagnier et al.
patent: 4201891 (1980-05-01), Lawrence et al.
Briley Bruce E.
Montsma John
Bell Telephone Laboratories Incorporated
Herndon J. W.
Olms Douglas W.
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