| 摘要 |
A novel system for performing optical time domain reflectometry (OTDR) measurement on a plurality of optical fibers (105, 106, 107, 108, 109), using only the transmitters and receivers of the system data. The system uses optical line cards (120, 121, 122, 123, 124), which are normally used for transmission of system data, to perform fault detection. Detection of a fault in an optical fiber causes the line card associated with the fiber to stop transmission of system data and alert signal processor (140) to initiate OTDR testing. The signal processor is coupled to each of the line cards through an electronic 1XN switch (130) so that each fiber can be tested individually. |
