Multiplex communications – Wide area network – Packet switching
Patent
1991-05-31
1992-11-17
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 59, 370 91, H04J 322
Patent
active
051649403
ABSTRACT:
A digital communication system comprising a plurality of lines some of which carry data at various data rates, apparatus for detecting the rates and for determining the destination lines to which the data are to be passed, receivers associated with the lines, memory apparatus for receiving and temporarily storing the data as it arrives on the lines carrying data, an internal bus operating at a predetermined data rate at least as high as a maximum one of the various data rates, apparatus for enabling each the memory apparatus and a corresponding one of the receivers in unison so as to couple pairs thereof together via the bus and thereby to transmit data from each memory apparatus to a receiver associated with a destination line, the enabling occurring at rates relating to the various data rates, the transmission occurring at the predetermined data rates.
REFERENCES:
patent: 3814860 (1974-06-01), Pringle
patent: 3982077 (1976-09-01), Clark et al.
patent: 4759017 (1988-07-01), Allan et al.
patent: 4788679 (1988-11-01), Kataoka et al.
patent: 4979166 (1990-12-01), Yamada
Blum Russell W.
Mitel Corporation
Olms Douglas W.
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