Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Patent
1997-08-15
2000-10-24
Hsu, Alpus H.
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
370397, 370401, 370474, H04L 1256
Patent
active
061377988
ABSTRACT:
In a connectionless communication system, a number of interworking units are provided for accommodating local area networks. At the internetworking units, a packet from the local area networks are segmented into cells for transmission to an ATM network. The cells contain a connectionless address designating a designation local area network, a virtual path identifier (VPI) designating a permanent virtual connection, and a virtual channel identifier (VCI) identifying the packet. The ATM network includes a number of cross-connect nodes interconnected by communication links. The cross-connect nodes establish a plurality of permanent virtual connections between the interworking units and the nodes and between the nodes in pairs, receive the cells from the interworking units and route the cells having VCIs of the same value through the permanent virtual connections to a destination interworking unit according to the connectionless address and the VPI contained in the cells. The destination interworking unit assembles the cells having VCIs of the same value into a packet for routine the packet to the destination local area network according to the connectionless address transmitted by the packet.
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Masuda Michio
Nishihara Motoo
Ogawa Makoto
Hsu Alpus H.
NEC Corporation
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