... features : recording, IVR, Video calls, 3-way-conferenceHighlihgt:One system with all the communication functions that helps to grow your business ... ,firmware upgrade through Web;VLAN: 802.1q VLAN pass-throughNAT Port mapping, DMZQoS: WMM & WMM power save, bandwidth control, ... 1 lineUSB: 2 USB hosts for 3G dongle or storageControl button Reset, WiFi on/off, WPS Wireless VoIP Router with 3G USB Dongle