Product:VOIP internet gateway Model number:NXD-4W VOIP internet gateway function description Mostly thePort Voip Gateway is box with a power adapter interface, a RJ45 interface, a RJ11 interface and a IP key. Power adapter is used to connect to the power adapter, RJ45 interface is used to connect to LAN and two RJ11 interface is used to connect the phone. The IP key has several usages. It can play the voice to announce the current IP address, it can used to enter into safe mode to retrieve the firmware, it can used to set the IP type and IP address. When you take a Port Voip Gateway, first you need to connect it to LAN, phone and power adapter correctly. Then the Port Voip Gateway will boot up. After 30 seconds, it is in working mode now. At this time, you pick up the phone''s handset, you should hear dial tone or busy tone. VOIP internet gateway Key Features: 1. SIP V1.0 V 2.0 protocols support, Registration in Unlimited Gatekeepers. 2. Registration in Unlimited Gatekeepers, Full Compatibility with Cisco, Lucent, Quintum, IP phones, Soft phones. 3. All codecs capable of operating concurrently, Intuitive, user-friendly GUI interface. 4. Unlimited IVR profiles including ANI,PIN/ANI, pass-through authentication mechanisms. 5. Unlimited dialing plans/routing tables to allow custom routing based on Gateway IP address. 6. Provides fail-over of remote routes based on L3,L4, L7 remote service checks. 7. Full RADIUS/VSA support for complex Radius billing/CDR interfaces. Allows custom voice prompts and custom lang- uages, Allows Callback services based on two IP leg solution. 8. PC-to-Phone support with IVR support for VoIP clients for ANY codec. 9. Call Drops, Call Forwarding, and Advanced Number Processing support. 10. Additional QoS (Quality of Service), Firewall, and Routing modules available. VOIP internet gateway Electric Spec: 1. AC/DC adapter-Input AC 100-240V, Output 9V DC, FXS port ---- 2 FXS One for FXS And One for Pstn. 2. Ethernet Port --- 1 X 10/100MHz Ethernet Ports, one for LAN .