Demand for high-capacity corporate backbones, for high-speed access to the global Internet, and for trunking connections for service provider internetworking have led to 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 T3/E3 connections. The Cisco Clear Channel T3/E3 Shared Port Adapters (SPAs) Version 2 offer 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 SPAs Version 2 simplify T3/E3 line management, reduce provisioning costs, and make valuable rack space available.