| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method and system for control signaling in a ring optical network. <P>SOLUTION: A method and system for control signaling in an open ring optical network includes transmitting traffic in an optical ring. At each of a plurality of nodes along the ring, local traffic is passively added to and passively dropped from the connected ring. At each node, an ingress optical supervisory channel (OSC) signal is dropped from the ring to a managing element. An egress OSC signal is added to the ring from the managing element. The OSC signals may be in-band signals or out-of-band signals. <P>COPYRIGHT: (C)2009,JPO&INPIT |
