The 12-Port and 4-Port SFP-Based Multirate Optics Card for the Cisco ONS 15454 Multiservice Provisioning Platform (MSPP) improves the platform''s system flexibility, scalability, and economics in multiple-port optical configurations.The MRC cards, depending upon the selected SFP, can carry concatenated payloads of STS-3c/VC-4, STS-6c/VC-4-2c, STS-12c/VC-4-4c, STS-24c/VC-4-8c, and STS-48c/VC-4-16c as well as nonconcatenated payloads on an STS-1, VC-4, VC-3, VC-12, VC-11, and VT1.5 basis. In SONET applications, the cards are software-provisionable to transport SDH payloads over SONET in the form of STS-Nc-concatenated payloads. When operated within the outlined specifications, each card transports signals with a maximum bit error rate of 1 per trillion.