Multiplex communications – Wide area network – Packet switching
Patent
1988-02-25
1989-04-11
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 94, 3701101, H04L 1116
Patent
active
048212636
ABSTRACT:
A method and apparatus for transmitting message information between a plurality of transmission units includes a plurality of data transmission channels on a bus system which are each permanently assigned to a respective transmission unit and adapted to transmit message information only to the transmission unit to which it is assigned from any one of the other transmisstion units. In addition, a plurality of status transmission channels on the bus system are each assigned to one of the transmission units and adapted to transmit status information from any one of the transmission units. This status information indicates whether the data transmission channel assigned to the same transmission unit as the respective status transmission channel is engaged or unoccupied for transmitting message information. The method and apparatus are particularly suited for switching nodes in packet-switched communications.
REFERENCES:
patent: 4426697 (1984-01-01), Petersen et al.
patent: 4580261 (1986-04-01), Pelotte
patent: 4652873 (1987-03-01), Dolsen et al.
patent: 4755990 (1988-07-01), Bohler et al.
Marcelo Melvin
Olms Douglas W.
Telefonaktiebolaget L M Ericsson
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