The 2.5-Gbps multirate transponder card provides the capability to transport a wide variety of service types from 155 Mbps to 2.48 Gbps, including services such as ESCON, SONET OC-3 through OC-48, SDH STM-1 through STM-16, Gigabit Ethernet, 1- or 2-Gbps Fiber Channel, and other services, over a 100-GHz, ITU-compliant wavelength, with 50-GHz wavelength stability for future 64-channel operation. The 2.5G transponder card architecture contains a single client interface that is mapped to a single-line DWDM interface, without accessing the Cisco ONS 15454 shelf cross-connect fabric. This model features unprotected DWDM line. The card is compatible with SDH system.