SIP Server inside IP PBX 2USB ports Support WCDMA/CDMA2000; 801.11b/g/n Wireless router 1 phone port and 1 CO line Wireless IP PBX phone system for Home and small office;2 USB ports for 3G WCDMA/CDMA2000 Dongle or Storage1 WAN port and 2 LAN ports802.11 b/g/n Wireless Router1 analog extension and 1 CO lineSupport 8 SIP clients4 SIP trunksIP PBX features : recording, IVR, Video calls, 3-way- ...