In the scheme, FSK-FDM technique is used in subcarrier modulation, and the EDFA's supervisory information is transmitted by optical intensity modulation.

The supervisory information system(SIS) and its database platform PI(plant information)real-time database, data flow and point building technology in PI database are introduced.

Through forming the uniform supervisory information flat and supervisory joint conference model to achieve the aim of improving supervisory ability and controlling the linked risk.