Service providers face the challenge of meeting customer demand by building scalable, feature-rich edge networks that can deliver value-added services such as Multiprotocol Label Switching virtual private networks (MPLS VPNs), voice, video, and data integration, and tiered service offerings at all interface rates without compromising density or line-rate performance. The Cisco IP Services Engine (ISE) technology channelizes 4 OC-12/STM-4 interfaces into 16 OC-3/STM-1 or 48 DS3/E3 channels and offers an extensive set of service-enabling edge features while protecting line-rate performance simultaneously on all ports.The 4-Port CHOC-12 ISE card features the Cisco 12000 Series IP Services Engine (ISE) technology - a unique, edge-optimized, programmable adaptive network processor that combines the hardware performance of application specific integrated circuits (ASICs) with the flexibility of software. By supporting dynamic, non-service impacting provisioning, ISE enables the real-time delivery of services, while programmability ensures future customer requirements can be met with simple software upgrades instead of costly hardware replacements.Combined, the Cisco 12000 Series and ISE technology uniquely offer the advantages of a distributed architecture to 10G-enable the high-speed service provider edge by delivering linear performance scalability, a complete range of chassis form-factors, application-optimized line cards, and 10 Gbps uplinks. They offer the industry's only per-customer, guaranteed priority packet delivery for the edge by providing thousands of queues that can be dynamically assigned per port, unlimited input and output filters per port, and the most comprehensive set of quality-of-service (QoS) features available today, including packet classification, congestion avoidance, and low-latency queuing (LLQ).