Telesail 100GBASE-LR4  CFP2 transceivers modules are hot-pluggable form-factor module ,which designed for 100-Gigabit Ethernet and OTN OTU4 applications over 10km kilometers over single-mode (SMF) fiber (9/125) with duplex LC connector, and it fully compliant with the CFP2 MSA and IEEE 802.3ba 100GBASE-LR4 specifications. 
It is running at four optical wavelengths (1295.56 nm, 1300.05 nm, 1304.59 nm, 1309.14 nm) and multiplexing/de-multiplexing of these wavelengths happening inside CFP2 module according to the IEEE LR4 recommendation. The high-performance cooled LAN-WDM EML transmitters and high-sensitivity PIN receivers provide superior performance for 100-Gigabit Ethernet and OTU4 applications up to 10km links and compliant to optical interface with IEEE 802.3ba Clause 88 100GBASE-LR4 requirements. 
Digital diagnostics are available via MDIO interface as specified in the CFP2 MSA Management. The transceiver's designs are optimized for high-speed computing networks, data center, service provider applications. It offers a variety of options to meets the different requirement.