Telephone Interface 24 x RJ11 FXS ports and 1 x 50-pin Telco connector Network Interface 1 x 10M/100 Mbps auto-sensing RJ45 port Audio Codecs G.711, G. 723, G.726 (40/32/24/16), G.729A/B/E, iLBC Security SRTP, TLS/SIPS Fax over IP T.38 compliant Group 3 Fax Relay up to 14.4 kbps and auto switch to G.711 for fax pass-through Configuration Web based, TFTP, HTTP, HTTPS Power Input 12 Vdc, 5.0Amp Compliance FCC Part 15B; CE, EN55022/EN55024; C-Tick