| 摘要 |
An Ethernet(R) communication system wherein control signals are relayed by ADM/WDM apparatuses and are directly transferred between L2/L3 switches apparatuses to enable application for new control protocols, improvement of the maintenance ability, etc., that is, an Ethernet(R) communication system provided with at least two transmission apparatuses arranged opposing each other across a transmission line at which an Ethernet(R) path is set and terminating units connected to the transmission apparatuses and communicating between terminating units through said transmission apparatuses, wherein each of the transmission apparatuses is provided with a relaying means for relaying communications by insertion of control signals transferred by interfaces of the terminating units, without termination at the transmission apparatus, into Ethernet(R) frames between the transmission apparatuses, and the control signals are passed through the relaying means to the opposing side terminating unit.
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