D-Link DVG-2001S VoIP Phone Adapter. Management protocols: SIP, PPPoE. Networking features: IEEE 802.3 10M Ethernet, IEEE 802.3u 100M Ethernet. Dimensions (WxDxH): 90 x 82.46 x 31 mm. Power requirements: 12V AC, 1.2A. Operating temperature range (T-T): 0 - 40 °C, Storage temperature range (T-T): -10 - 55 °C