H - Electricity – 04 – L
Patent
H - Electricity
04
L
H04L 12/56 (2006.01)
Patent
CA 2273369
An AAL2 packet exchange device is placed in front of an ATM switch for executing CPS packet re-multiplexing into ATM cells. The AAL2 packet exchange device extracts CPS-PDUs (Common Part Sublayer- Protocol Data Units) from ATM cells which are supplied from input ATM lines, extracts CPS packets from the CPS-PDUs, alters CIDs (Channel IDentifiers) of the CPS packets if necessary so that CID collision will not occur between CPS packets supplied from different sources to be outputted to the same output ATM connection, multiplexes the CPS packets to be outputted to the same output ATM connection in ATM cells of the same output ATM connection. The CID alteration is executed by referring to a path setting table which stores each correspondence between a first internal address for discriminating between input ATM connections, an input CID, a second internal address for discriminating between output ATM connections, and an output CID. By the CID alteration, CPS packets which have been contained in ATM cells from different sources can be multiplexed onto the same VP/VC. Therefore, multiplexing efficiency on each ATM connection can be improved, and thereby increase in the number of ATM cells can be avoided and the load on ATM switches can be lightened.
Corporation Nec
Juniper Networks Inc.
Ridout & Maybee Llp
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