LevelOne VOI-9100. VoIP protocols: H.323 v3, Management protocols: CLI. Power requirements: 115 -230V AC; 50/60 Hz. Dimensions (WxDxH): 85 x 115 x 30 mm. Operating temperature range (T-T): 0 - 50 °C, Operating relative humidity range: 10 - 90 %. LED indicators: LAN, Power