Cisco 3800 Series integrated services routers (EOS & EOL now) are designed for medium-sized to large businesses and enterprise branch offices. This series can simplify enterprises' deployment and management, lower the costs and architect a flexible network. In addition, they support mission-critical business applications, through a highly secure platform with concurrent T3/E3 wire-speed delivery including Data, Security, Voice, Video and Wireless. It is worth mentioning that they support up to 2500 VPN tunnels and up to 720 Cisco IP phone users.