Patent ID: 7715374
Filing Date: 2010-05-11
Classification: H04J,H04L

Abstract:
1. A redundancy gateway system, including a plurality of gateway units, configured in a multiplex manner between a packet network and a Time Division Multiplexing (TDM) network, and which performs TDM conversion processing to a plurality of packets supplied from the packet network, by the gateway units, and supplies a resulting TDM signal to the TDM network, the redundancy gateway system comprising: a same packet supply unit that generates a duplicate of the packet and thus supplies packets of the same content to the plurality of gateway units; a common write pointer generating unit that generates, for each of the packets, a common write pointer corresponding to identification information appended to the packet; and a selective supply unit that selectively switches one of the plurality of gateway units and supplies only a TDM signal acquired from the one gateway unit to the TDM network; wherein each of the plurality of gateway units includes wherein the common write pointer generating unit and the read pointer generating unit are provided in each of the plurality of gateway units; and wherein only one gateway unit, corresponding to an operation command generates the write pointer and the read pointer and commonly supplies them to all the gateway units.