For a description of the PICs, see SONET/SDH OC3/STM1 (Multi-Rate) PICs with SFP (T640 Routing Node).
Table 35: Optical Interface Support for SONET/SDH OC3/STM1 (Multi-Rate) PICs with SFP Configured at an OC3/STM1 Rate
Table 36: Optical Interface Support for SONET/SDH OC3/STM1 (Multi-Rate) PICs with SFP Configured at an OC12/STM4 Rate