Optical transmission device and optical transmission system
First Claim
1. An optical transmission device for controlling transmission of an optical signal, comprising:
- overhead terminating means for converting the optical signal to an electric signal and performing an overhead process including extraction of fault information and setting of status information;
optical switch means for performing a process of switching the optical signal between active and standby lines; and
switching control means for providing a switching command to said optical switch means in accordance with the fault information.
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Accused Products
Abstract
An optical transmission device in which optical signal switching is performed to allow the device to be reduced in size and also which is capable of efficient recovery from fault, thereby improving system expansibility and communication quality. Overhead terminating section converts an optical signal to an electric signal and performs an overhead process including extraction of fault information and setting of status information. Optical switch section performs a process of switching the optical signal between active and standby lines, and switching control section provides a switching command to the optical switch section in accordance with the fault information.
22 Citations
8 Claims
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1. An optical transmission device for controlling transmission of an optical signal, comprising:
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overhead terminating means for converting the optical signal to an electric signal and performing an overhead process including extraction of fault information and setting of status information;
optical switch means for performing a process of switching the optical signal between active and standby lines; and
switching control means for providing a switching command to said optical switch means in accordance with the fault information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An optical transmission system for controlling transmission of an optical signal over a ring network, comprising:
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a plurality of optical transmission devices each including overhead terminating means for converting the optical signal to an electric signal and performing an overhead process including extraction of fault information and setting of status information, optical switch means for performing a process of switching the optical signal between active and standby lines, and switching control means for providing a switching command to the optical switch means in accordance with the fault information; and
an optical transmission medium connecting said optical transmission devices in ring form to constitute the ring network.
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Specification