The Cisco I-Flex design combines shared port adapters (SPAs) and SPA interface processors (SIPs), leveraging an extensible design that enables service prioritization for voice, video and data services. Enterprise and service provider customers can take advantage of improved slot economics resulting from modular port adapters that are interchangeable across Cisco routing platforms. The I-Flex design maximizes connectivity options and offers superior service intelligence through programmable interface processors that deliver line-rate performance. I-Flex enhances speed-to-service revenue and provides a rich set of QoS features for premium service delivery while effectively reducing the overall cost of ownership.The Cisco 7600 SIP-200 helps enable high-performance, intelligent WAN services. Enterprises and service providers can take full advantage of the increased scalability, performance, and rich features offered by the Cisco 7600 SIP-200, along with the many options for WAN aggregation and connectivity offered in the Cisco SPA/SIP portfolio. The Cisco 7600 SIP-200 provides feature parity with the Enhanced FlexWAN while offering twice the performance and increased scalability.