Product Features Supports DWDM transmission and wavelength conversion. Single board supports 1 channel of 40Gbit/s bidirectional business access. Transparent transmission of business data. Hot-swappable support. Supports FEC functionality, optimizing output and enabling DDM signal monitoring, as well as link detection (no transmission when no receiving light). Supports SNMP-based unified network management platform with management interfaces including CLI (telnet and console), Web, and NetView (graphical interface).