| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To freely permit build-up of a network, for realizing a Gigabit Ethernet(R) ADM (add drop multiplexer) switching without instantaneous interruption for switching of a conveying line. <P>SOLUTION: The gigabit Ethernet signal is monitored, before or after a cross connect unit to insert IFG into the signal and standing by switching, whereby signal state is set to IFG in the cross connect unit, thereby switching the conveying line without instantaneous interruption. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
