OTN Multirate 10km CFP4 Optical Transceiver:F-tone Netsworks’s Fiber 100G CFP4 transceiver modules are designed for use in 100 Gigabit Ethernet and 4x28G OTN client interfaces over single mode fiber. They are compliant with the CFP MSA, IEEE 802.3ba 100GBASE-LR4 and OTU4 4I1-9D1F requirements specified in ITU-T Recommendations G.959.1/G.709 and Supplement 39 (G.sup39). Digital diagnostics functions are available via the MDIO interface, as specified by the CFP MSA and F-tone Netsworks Application Note FTAN2015xx. The transceiver is RoHS-6 compliant and lead-free per Directive 2002/95/EC, and F-tone Netsworks Application Note FTAN201538.