The EDFC series pluggable module is built using semiconductor lasers, WDM, isolator, and erbium-doped fiber, and tap monitors. It features flat wavelength response by incorporating high-performance gain flattening filters; high stability with a feedback power control and a temperature compensating circuit. Customer configurations are available. The output power is variable by the Ethernet kernel GUI. The pluggable and the associated host net-control rack are standardized for local network build out.