Finisar's FTRJ1421P1xCL SFP transceivers are compatible with the Small Form Factor Pluggable MSA. They comply with SONET OC-48 IR-1 (SDH STM S-16.1) standards, Gigabit Ethernet and Fibre Channel. They are also compatible with SONET OC-12 and SONET OC-3. Digital diagnostics functions are available via the 2-wire serial bus.