The AS5800 distributed processor architecture is unique in that it provides the Cisco latest dial shelf technology in conjunction with proven router technology. The AS5800 provides all the hardware components service providers have come to expect from carrier-class products and all the routing, wide-area network (WAN), and quality of service (QoS) features which have been the hallmark of Cisco routing products.The AS5800 supports E1 interfaces with PRI and R2 signaling. This CE1 trunk card provides physical termination for up to 12 E1 lines and connects to an external network termination (NT1) device.