Lancom Systems 1722 VoIP Router. DSL connection type: ADSL. Routing protocols: RIP, RIP-1, RIP-2, SAP, VRRP, Data link protocols: SNMP 2, SNMP, Telnet, HTTP, HTTPS. Operating temperature range (T-T): 5 - 40 °C, Operating relative humidity range: 0 - 80 %. Maximum data transfer rate: 0.1 Gbit/s, Dimensions (WxDxH): 210 x 140 x 45 mm, Connectivity technology: Wired