| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a redundancy gateway system that can maximally avoid short interruption of data communication, caused by system switching in gateway units configured in a multiplex manner for a plurality of systems, and that can maintain the communication state prior to the system switching and avoid degradation of communication quality. <P>SOLUTION: The redundancy gateway system generates a duplicate of a received packet, thereby supplying a packet of the same content to a plurality of gateway units. For each packet, a common write pointer, corresponding to identification information appended to the packet, is generated. Each of the plurality of gateway units writes the packet to its own jitter buffer, in accordance with the common write pointer corresponding to each supplied packet, sequentially reads out the written packet from the jitter buffer, and generates a TDM signal. One among the plurality of gateway units is selectively switched, and only the TDM signal generated by the one gateway unit is supplied to a TDM network. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
