ZyXEL P-202H Plus v2. Data link protocols: TFTP, FTP, DHCP server/ client, Networking features: PPP/MP, Dynamic DNS, BACP/BAP, Hi/fn (Stac LZS). Connectivity technology: Wired, Interface type: ISDN BRI. Storage temperature range (T-T): -20 - 60 °C, Operating relative humidity range: 20 - 85 %, Operating temperature range (T-T): 0 - 40 °C. Weight: 0.51 kg, Dimensions (WxDxH): 230 x 161 x 35 mm