OLP optical protection board introduced by ISEELINK is to assist the wavelength division system to complete optical layer protection solutions such as optical 1+1-line protection and optical wavelength 1:1 protection. It can monitor the signal status of the primary and standby routes in real time. In the case of optical signal interruption or performance degradation, it can automatically and safely switch the main and standby routes to ensure fast recove. www.iseelink.com https://www.otndevice.com