... /UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS (A record and SRV), DHCP, PPPoE, TFTP, NTP. 2)Dual 10/100mbps ... Digital Signal Processing (DSP), Silence suppression, VAD, CNG, AEC, AGC.4)Supports H.263 and H.264 (baseline) real-time video codec with video ... click to dial. 7)Multi-line support, multi-party conferencing, headset enabled, intercom, AES encryption. 300 degree voip video phone with USB ...