CS5553  is a 5 Gbps ATM SAR and Traffic Manager device. When functioning as an ATM SAR, CS5553 can perform full AAL5 segmentation and reassembly at OC-48 full-duplex rates, as well as offer IP-to-ATM or Frame Relay-to-ATM internetworking. When functioning as a Traffic Manager, the device can manage up to one million distinct flows, and can aggregate and switch IP, ATM, or MPLS traffic. Host-side and line-side connections are provided by integrated SPI4.2 or SPI3 interfaces, with either protocol selectable for both connections. CS5553 is the industry's most flexible and fully-featured SAR and traffic manager solution.