Lancom Systems 1724 VoIP ADSL2 Router. DSL connection type: ADSL. Networking standards: IEEE 802.1p, IEEE 802.3. Routing protocols: RIP-1, RIP-2, Data link protocols: SNMP 2, SNMP, Telnet, HTTP, HTTPS, Supported network protocols: TCP/IP, IPX/SPX, PPTP, UDP/IP, NetBEUI/NetBIOS, NTP, ICMP/IP, IP/IPX, IPSec, PPPoE, PPPoA, IPoA, ARP. Certification: ITU G.992.2 (G.Lite), ITU G.994.1 (G.hs), HDLC, ITU G.992.5, ITU G.992.1 (G.DMT). Operating temperature range (T-T): 5 - 40 °C, Operating relative humidity range: 0 - 80 %