Grandstream Networks GXW4502. Supported network protocols: TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP,.... Security algorithms: 802.1x RADIUS,HTTPS,SRTP,SSH,SSL/TLS, Authentication method: RFC2833, SIP INFO. Ethernet LAN data rates: 10,100,1000 Mbit/s, Networking standards: IEEE 802.1Q, Cabling technology: 10/100/1000Base-T(X). Width: 485 mm, Depth: 191 mm, Height: 46.2 mm. Input frequency: 50/60 Hz, Input voltage: 100 - 240 V, Output current: 2 A