Demand for high-capacity corporate backbones high-speed access to the global Internet and trunking connections for service provider internetworking has led to a growth in Clear Channel T3/E3 connections that has outpaced all other types and speeds of leased lines. This growth places tremendous strain on service providers and network managers who must provision and manage new T3/E3 connections. The Cisco Clear Channel T3/E3 SPA for the Cisco ASR 1000 Series Aggregation Services Routers offers high-density highly manageable T3/E3 line connectivity and termination. With integrated line-interface data service units (DSUs) that allow T3/E3 lines to be directly terminated on a Cisco router the Cisco Clear Channel T3/E3 SPA simplifies T3/E3 line management replaces provisioning costs and makes valuable rack space available.