Multipurpose packet switching node for a data communication netw

Details Multipurpose packet switching node for a data communication netw Multipurpose packet switching node for a data communication netw

1995-06-27

1996-10-22

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, 370 8513, H04Q 1104, H04J 324

Patent

active

055684777

ABSTRACT:
A multipurpose data communication network node for interconnecting both ATM and Variable Length (VL) input/output trunks with all combinations of node input versus output trunk connections. The network node includes ATM/VL Receive Adapters and ATM/VL Transmit Adapters, interconnected via a Switching device (44) operating on ATM like packets (i.e. ATM cells) only. The receive adapter includes means (41, 43) for deriving switchable cells from VL traffic possibly including ATM packets and provided over an input VL trunk and means (45, 46) for deriving switchable cells from ATM packets provided on input ATM trunk. The transmit adapter, includes means (47, 48) for reconstructing VL traffic to be fed onto an output VL trunk, and means (49, 50) for reconstructing ATM traffic to be fed onto an output ATM trunk; both means (47, 48) and (49, 50) being fed with switchable cells irrespective of the traffic origin, being it from VL or ATM trunks.

REFERENCES:
patent: 5007045 (1991-04-01), Tsuzuki
patent: 5101404 (1992-03-01), Kunimoto et al.
patent: 5237569 (1993-08-01), Sekihata et al.
International Zurich Seminar on Digital Communications, 5 Mar. 1990, Zurich XP000315092, H. Schneider "The Concept of Virtual Paths and Virtual Channels in ATM-Networks".
Patent Abstracts of Japan vol. 17, No. 676 (E-1475) 13 Dec. 1993 & JP-A-05 227 211 (Fujitsu) 3 Sep. 1993 "Packet Switching System".
Patent Abstracts of Japan vol. 17, No. 101 (E-1327) 2 Mar. 1993 & JP-A-04 291 548 (Fujitsu) 15 Oct. 1992 "High Speed Large Capacity Matrix Type time Division Label Exchange System".
WO-A-92 17014 (GPT Limited) "Connectionless Switching for ATM Switch".
WO-A-93 20634 (Northern Telecom Limited) "Method for ATM Switch Core Interface".

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