The 4500 Series business-class routers are designed for cost-effective broadband connectivity using a variety of WAN options including ADSL, SHDSL, SDSL, IDSL, and T1. Ideal for the needs of small and medium enterprises and teleworkers, the 4500 Series combines powerful routing features, built-in VPN capabilities, and enterprise-class management tools into a single, all-in-one device. The 4600 Series business-class routers combine hardware-based VPN acceleration, built-in software VPN features, an Ethernet switch, and powerful routing and management tools in a single, all-in-one device. Designed for the needs of small, medium, and distributed enterprises the 4600 Series offers the WAN options of SDSL, SHDSL, IDSL, and T1.