Grandstream Networks GXW-4248 V2. Product colour: Black, Mounting type: Desktop/Rack mounting, LED indicators: Activity, LAN, Power. Voice codecs: G.711, G.722, G.723, G.726-32, G.729, OPUS, iLBC. Display type: LCD. Management protocols: HTTPS, SSH, TR-069, Supported network protocols: TCP/UDP, RTP/RTCP, HTTP/HTTPS, ARP, ICMP, DNS, DHCP, NTP, TFTP, PPPoE, STUN, LLDP. Ethernet LAN data rates: 10,100,1000 Mbit/s, Networking standards: IEEE 802.1Q, IEEE 802.1p