- Quality of Service (QoS)
- Clocking distribution
- Online Insertion and Removal (OIR)
- Software high availability
- Modularity
The Cisco ASR 1000 Series SPA Interface Processor (SIP), based on the Cisco I-Flex design, combines shared port adapters (SPAs) and SPA interface processors (SIPs), taking advantage of an extensible design that facilitates service prioritization for voice, video, and data (triple-play) 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.