ATOP 10G SFP+ CWDM series consist of 10G SFP+ CWDM for SDH/PDH and 10G SFP+ CWDM for Ethernet, designed for use in 10Gigbit, multi-rate links up to 70KM of G.652 single mode fiber. Compatible with SFF-8431, SFF-8432 and supporting SONET OC-192 /SDH STM-64 and 10G Ethernet protocol, these products are well suited for transmission networking and data center interconnect applications. Digital diagnostics functions are available via an I2C interface, as specified by SFF-8472.