To reduce the burden of works for searching, locating, repairing and replacing the equipment, when a submarine network terminal (repeater) fails in a submarine network.
A submarine network 4 (cable) is laid on the sea bottom 3. A plurality of submarine network terminals (repeaters) 5, 5,... are installed as the equipment configuring the submarine network 4 throughout the submarine network 4. Abnormality detection notification units 6, 6,... for notifying an abnormal state are connected, respectively, with the submarine network terminals (repeaters) 5, 5,.... Upon occurrence of an abnormality, a submarine network terminal (repeaters) 5a transmits an abnormality signal to the error detection circuit of an abnormality detection notification unit 6a connected with itself. Upon receiving the abnormality signal, the abnormality detection notification unit 6a sends the abnormality signal to an underwater robot 7 floating in the sea.
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| JP2000022621A | 2000-01-21 | |||
| JPH0968575A | 1997-03-11 | |||
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| JP2008217568A | 2008-09-18 | |||
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| JPH01101491A | 1989-04-19 |
Ryuichiro Mori
Naoki Matsuo