Transmission apparatus

Details Transmission apparatus Transmission apparatus

2011-05-31

2011-05-31

Yao, Kwang B (Department: 2473)

Multiplex communications

Channel assignment techniques

Details of circuit or interface for connecting user to the...

Reexamination Certificate

active

07953106

ABSTRACT:
In a transmission apparatus of a Gigabit Ethernet signal, in order to improve line efficiency, time division multiplexing is used. Further, if it is possible to branch/insert plural multiplexed Gigabit Ethernet signals at arbitrary nodes, it is possible to construct a more flexible network. For this reason, importance of a time division multiplexing apparatus having a function of branching/inserting Gigabit Ethernet signals is growing. A Gigabit Ethernet signal is monitored at the previous and subsequent stages of a cross connect unit, IFGs are inserted to the signal and switching is waited. If a signal state at the cross connection unit is an IFG, transmission path switching is performed, thereby performing transmission path switching without instantaneous interruption.

REFERENCES:
patent: 7760723 (2010-07-01), Daines et al.
patent: 2004/0114638 (2004-06-01), Matsuura et al.
patent: 2007/0116055 (2007-05-01), Atsumi et al.
patent: 2007-110457 (2007-04-01), None

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