H - Electricity – 04 – L
Patent
H - Electricity
04
L
340/84
H04L 12/42 (2006.01) H04J 3/08 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 1333925
Disclosed is a ring transmission system which incorporates both a narrowband network and a broadband ISDN network. The system comprises a plurality of nodes connected to a ring line. Each node comprises a drop/insert unit for dropping/inserting data by the use of a communication channel allocated to the node and an allocation changing circuit, whereby, a plurality of independent narrowband and broadband exchange networks are connected to a single ring transmission line.
592727
Fukui Toshimasa
Isono Osamu
Iwabuchi Eisuke
Nishino Tetsuo
Tachibana Tetsuo
Fujitsu Limited
Mcfadden Fincham
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