The Cisco 12000 Series 4-port OC-12/STM-4 ATM Line Card expands the connectivity options for Cisco 12000 Series routers, enabling service providers to attach Cisco 12000 routers directly to existing ATM infrastructures. Service providers face the challenge of meeting customer demand by building scalable, feature-rich networks that can deliver value-added services such as private IP connectivity, integrated data, voice, and video services, and tiered service offerings at all interface rates without compromising density or line-rate performance. The Cisco IP Services Engine (ISE) ATM line card provides the same powerful feature set as the standard ATM line cards and go a step further to accommodate service provider requirements by combining an extensive set of service-enabling edge features with advanced ATM traffic management and sophisticated IP/Multiprotocol Label Switching (MPLS)-to-ATM quality-of-service (QoS) functions, without compromising line-rate performance.