The 7120-AT3 VPN Router VPN Router is full-featured, high-end, integrated VPN solutions melding high-speed, industry leading routing with a comprehensive suite of VPN services. The Cisco 7120-AT3 VPN Router integrates key features of VPNs-tunneling, data encryption, security, firewall, advanced bandwidth management, and service level validation to provide secure, scalable VPN platforms to better and more cost-effectively accommodate remote-access, remote-office, and extra-net connectivity using public data services. It offers specific hardware configurations optimized for VPN environments or service provider WAN/VPN customer premise equipment (CPE) applications. The The Cisco 7120-AT3 provides one high-speed, ATM port that supports full-duplex operation at T3 (45-Mbps) speeds.