The ADTRAN NetVanta 3200 Chassis is a modular access router that delivers cost-effective Internet access, MPLS, corporate frame relay, point-to-point connectivity, and ADSL for applications requiring up to two T1s. The NetVanta 3200 includes one Ethernet LAN port, a built-in firewall for network security, QoS to priority delay sensitive traffic like VoIP, DHCP to assign IP addresses, and Network Address Translation (NAT) as well to conceal private address.