... 1 CO line Wireless IP PBX phone system for Home and small office;2 USB ports for 3G ... cost and maintenance effort on office wiringAdvantages:Dual USB 2.0 for 3G Dongle Router or Storage, ... & WMM power save, bandwidth control,802.1p, DSCPFirewall IP/MAC binding for anti ARP spoofingIP/MAC filtering, website ... MDI/MDIXVoice: 1 phone and 1 lineUSB: 2 USB hosts for 3G dongle or storageControl button Reset, ...