Product Specifications NetworkingConnectivity Technology: WiredData Link Protocol: Ethernet , Fast Ethernet , Gigabit EthernetFeatures: DHCP support , Syslog supportForm Factor: ExternalRemote Management Protocol: HTTP , HTTPSType: VoIP gatewayInterface ProvidedConnector Type: RJ-45Interface: T1/E1Qty: 1Type: ModemConnector Type: RJ-45Type: 1000Base-TConnector Type: Type AType: USBMiscellaneousCompliant Standards: AS/NZS 60950 , EN 60950 , EN 61000 , EN55022 , EN55024 , FCC Part 15 A , IEC 60950Height (Rack Units): 1Environmental ParametersHumidity Range Operating: 0 - 90%Max Operating Temperature: 122 °FMin Operating Temperature: 32 °FHeaderBrand: DigiumCompatibility: PCCountry Kits: North AmericaManufacturer: DigiumModel: G100Packaged Quantity: 1Product Line: DigiumLine PropertiesLine Rate: T-1/E-1Power DeviceFrequency Required: 47 - 63 HzNominal Voltage: AC 120/230 VType: Internal power supplyCapacityType: Concurrent callsValue: 30IP TelephonyIP Telephony Features: Echo cancellation , SIP serverVoice Codecs: G.711 , G.722 , G.726 , G.729 , T.38VoIP: YesVoIP Protocols: SIP