Patent ID: 7805074

Claim:
A package starting control device comprising: a monitoring unit monitoring operational states of optical modules included in packages, each optical module of which generates an optical signal which is subjected to a wavelength-division-multiplexing to form a wavelength division multiplexed optical signal and, the monitoring unit monitoring an operational state of a transmission unit transmitting the wavelength division multiplexed optical signal to an optical transmission line, and detecting a specific optical module included in a package which is not mounted or is excluded from a system configuration, out of the optical modules whose operational states are monitored; and a control unit restricting output of the optical signals from the packages that include the optical modules that generate the optical signals further subjected to a wavelength-division-multiplexing to form the wavelength division multiplexed optical signals during a period in which an operational state of at least one of the packages including optical modules monitored by the monitoring unit is not in a steady state, and the control unit suspends the release of the restriction until the operational state of the transmission unit becomes the steady state when the specific optical module is detected by the monitoring unit, and the control unit releasing the restriction, made by the at least one package, on the output of the optical signals to all of the packages when the period elapses; and a memory unit in which information individually applied to the starting of the respective packages is previously stored, and wherein the control unit provides a specific package to be the subject of the restriction or the release of the restriction, with the information stored in the memory unit corresponding to the specific package.