Adtran ADT-4212912L1 12 FXS ports- DSX-1 port Router

- Carrier-class, cost-effective IP Business Gateway for integrated services such as VoIP- Supports up to 12 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- 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