The Cisco Two-Port OC-3/STM-1 ATM Line Card is a versatile, high-performance line card that is well suited for a variety of applications. These applications include high-speed WAN uplinks in customer premises equipment (CPE) deployments, high-speed enterprise backbones, and high-speed uplinks for Cisco 7300 deployment as a medium-density, medium-speed, edge-aggregation router in Tier 2 and 3 service provider points of presence (POPs).