H - Electricity – 04 – Q
Patent
H - Electricity
04
Q
H04Q 3/42 (2006.01) H04L 12/56 (2006.01)
Patent
CA 2055242
A route switching system in a communications network constituted of a transmitter and a receiver connected by a plurality of routes for switching a first route along which communication is being held by transmission of cells to a second route causing no blocking. The route switching system comprises a first switch provided in the transmitter for switching input cells from one route to another and outputting the cells, a first storage portion provided in the transmitter for storing the input cells, a second switch provided in the receiver for switching input cells from one route to another and outputting the cells, and a second storage portion provided in the receiver for storing the input cells. At the time when the route is switched over, the first switch is changed over so that the cells are transmitted through the first storage portion and, on the receiver side, the second switch is changed over so that the cells transmitted over the second route are stored into the second storage portion. The transmitter includes a switching signal generating portion for outputting, at the time of route switching, a switching timing signal to the receiver side through the first switch, and the receiver includes a switching signal detecting portion for detecting the switching timing signal from the switching signal generating portion. When cells are stored into the first and second storage portions while the route is switched over, the cells are stored first into the second storage portion on the receiver side.
Chujo Takafumi
Komine Hiroaki
Miyazaki Keiji
Ogura Takao
Soejima Tetsuo
Fetherstonhaugh & Co.
Fujitsu Limited
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