Cisco I-Flex design--A portfolio of shared port adapters (SPAs) and SPA interface processors (SIPs) that prioritize voice, video, and data services so you can meet your customers' diverse service needs and stringent service-level agreements
Advanced silicon and software technologies, for high standards of routing performance and QoS
Comprehensive high-availability support to help avoid planned and unplanned network downtime
Integrated core and edge feature set, supporting a wide range of business and consumer services
Fully upgradable modular switch fabric and Cisco IOS XR Software upgrade capability, to protect investments and reduce total cost of ownership.