WAN Ports: T1 LAN Ports: 1 x 10/100Mbps Dimensions: 1.72" x 12.5" x 7.5" Weight: 3.5 lbs. Temperature: 0°C - 50°C Humidity: Up to 95%, non-condensing Features: 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) ...