The new ADSL HWIC provides 1-port ADSL connectivity to a WAN. The single-port ADSL HWIC, combined with the Cisco 1841 integrated services router (ISR) & the Cisco 2800 & 3800 series integrated services routers (ISRs), provides high-speed digital data transmission between customer premises equipment (CPE) & a central office. This enables service providers & resellers to offer additional services by supporting features for business-class security, voice integration, differentiated classes of service (Co S), & managed network access with Cisco IOS Software. These value-added features, along with the manageability & reliability of Cisco IOS Software technology, provide the mission-critical networking that businesses require.