Patent ID: 8626001

Claim:
An optical transmission device comprising: multiple optical communication cards; a control card configured to control the optical communication cards; and a switch card connected to the multiple optical communication cards, wherein each of the optical communication cards comprises: a signal transmission/reception unit configured to perform optical-electrical signal conversion for a signal received from outside; a first FEC processing unit configured to perform FEC processing for a signal from the signal transmission/reception unit; a first function selection unit configured to select a type of the FEC processing and to control the first FEC processing unit; and a first control unit configured to transmit/receive a signal to/from the control card, the switch card comprises: a second FEC processing unit configured to perform FEC processing for a signal from one of the optical communication cards; and a second control unit configured to select a type of the FEC processing and to control the second FEC processing unit and configured to transmit/receive a signal to/from the control card, and the control card comprises: a data table that associates a transmission line with multiple different types of FEC functions applicable to the transmission line and that stores them; and a retrieval processing unit configured to retrieve information to be transmitted to at least one of the first control unit and the second control unit from the data table.