... router 1 phone port and 1 CO line Wireless IP PBX phone system for Home and small office;2 USB ports ... extension and 1 CO lineSupport 8 SIP clients4 SIP trunksIP PBX features : recording, IVR, Video calls, 3-way-conferenceHighlihgt:One system ... /MAC binding for anti ARP spoofingIP/MAC filtering, website filteringIP PBX features: Auto Attendant IVR with time schedule, queuing, operator handling ...