KD-IPP004 IP phone is an internet based voice network phone terminal. IP phone adopts multiple voice control protocols and voice compression coding methods to directly convert analog voice into IP packet for internet transport, thus effectively using the existing bandwidth to provide PSTN quality voice service. KD-IPP004 IP phone supports H323, SIP,Support Bridge and Router model.Support H323 and dual public server,offers two Ethernet interface and is compatible with various softswitch systems and VoIP voice gateways to provide broadband IP voice service. Enterprise, small office and residential applications