| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the reliability of a terminal equipment by minimum cost as to a redundant terminal equipment in a PON system. <P>SOLUTION: The terminal equipment 4 connected to n terminal apparatuses 2 through a 2:n optical coupler 3 is provided with a common part including light transmitting/receiving modules 6, 7 connected to the 2:n optical coupler 3 and having redundant constitution composed of an active system and a standby system, a switching part 8 for switching the active system and the standby system of the light transmitting/receiving modules 6, 7 having the redundant constitution, and a traffic control part 9. <P>COPYRIGHT: (C)2007,JPO&INPIT |
