ATOP XSP series consist of 10G XSP for SDH/PDH and 10G XFP for Ethernet, designed for use in 10Gigbit, multi-rate links up to 80KM of G.652 single mode fiber. Compatible with XFP MSA and supporting SONET OC-192 IR-2, OC-192 IR-3, SDH STM S-64.2b, STM S-64.3b and 10G Ethernet protocol, these products are well suited for transmission networking and data center Fast Ethernet applications.