The NetVanta 6355 IP Business Gateway is a unique, all-in-one solution for Hosted VoIP PBX services, Internet access, and business connectivity. This powerful platform combines the voice functionality of ADTRAN's industry-leading Total Access 900e IP Business Gateway and the widely deployed NetVanta Power over Ethernet (PoE) switch into a compact 1U chassis. This all-in-one product includes a robust SIP gateway, a full-featured IP router, stateful inspection firewall, VPN, 24-port powered (802.3af ) Fast Ethernet switch with Gigabit uplinks, and two expansion slots for Network and Voice Interface Modules (NIMs/VIMs). Features: All-in-one Hosted IP voice and data solution. Integral SIP gateway, router, PoE switch, and security. Full-featured IP router supporting up to three T1s for data and Internet access. Managed, 24-port PoE (802.3af) switch. Stateful inspection firewall for network security. IPSec VPN for secure corporate connectivity across the Internet. Compatible with industry-leading softswitches and call agents. Up to 10 analog POTS interfaces with remote survivability. Supports IP amd analog phones/phone systems; fax machines, modems, and Wireless Access Points (WAPs). Dynamic bandwidth allocation enables more efficient utilization. Standardized G.729a voice compression requires less bandwidth per voice call. Industry-leading warranty.