The Cisco 1-Port Enhanced Capability Clear Channel Port Adapter for the Cisco 7200 Series Routers is an enhanced two-in-one version of the earlier Clear Channel T3/E3 port adapter. This product assists network implementers by minimizing sparing of both T3 port adapters for the United States and E3 for European and Asian implementations. It provides a new software architecture that allows selecting either T3 or E3 by way of software configuration coupled with a more powerful chipset that lowers CPU usage. The port adapter lowers CPU usage by more than 15 percent. This port adapter can perform at line-rate performance with lower CPU usage on the Cisco 7200 Series and Cisco 7201 and Cisco 7301 platforms while providing scalable trunking services.