The Total Access 904 IP Business Gateway provides SIP-gateway functionality, a robust IP router, firewall and VPN functionality, and support for a number of analog and digital interfaces for existing phone equipment, or for the combination of an IP PBX and an analog fax, phones, or modem. Part numbers are available for both single T1 and single ADSL2+ WAN interfaces. The part number above provides a the following: Single T1/single Ethernet platform, 4 analog FXS interfaces, integrated DSX-1 Ideal for networks transitioning to VoIP and an all IP voice and data WAN See Alternate Configurations under System Options Tab to select part number for Total Access 904 chassis with a single ADSL2+ WAN interface

Carrier-class, cost-effective IP Business Gateway for integrated services such as VoIP Supports up to 4 analog FXS interfaces for legacy equipment Single Ethernet interface for data connectivity Integral DSX-1 PRI/CAS for PBX connectivity Transparent proxy with survivability for network outages Voice Quality Monitoring (VQM) for enhanced Quality of Service (QoS) Compatible with industry leading softswitches and call agents Integral full-featured IP router for data support and Internet access Stateful inspection firewall for network security Quality of Service (QoS) for delay sensitive traffic like VoIP Command Line Interface (CLI) mimics industry de facto standard Feature-rich ADTRAN Operating System (AOS) Single T1 WAN interface Technical Specifications Analog to SIP or MGCP conversion for legacy support over a dynamic IP network Dynamic bandwidth allocation affords more efficient utilization Standardized G.729a voice compression requires less bandwidth per voice call Rugged metal case AC power with optional battery backup