The OC-48, 1511 nm CWDM Small Form-Factor Pluggable (SFP48C3) plugs into ADTRAN OC-48 equipment designed to accept Small Form-Factor Pluggables (SFPs). Installed into an appropriate host unit, the SFP48C3 provides an OC-48 Coarse Wavelength Division Multiplexing (CWDM) interface to the supporting system.