ATOP 10G XFP-ZR for SDH/PDH transceiver is designed for use in 10Gigbit, multi-rate links up to 40KM 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 ER protocol, this product is well suited for transmission networking and data centre Fast Ethernet applications.