IADs eries offer a comprehensive line of VoIP access devices that feature full compliance with industry standards, superb audio quality, rich functionalities, high level of integration, compactness, and great affordability. Features : Supported H323,SIP protocol DHCP support for LAN or Cable modem PPPoE support for ADSL or Cable modem Set phone by HTTP web browser Upgrade by TFTP HTTP Support major G.7XX Dynamic voice jitter buffer CNG (Comfort noise generation) G.165 compliant 16ms echo cancellation Tone generation and Local DTMF re-generation according with ITU-T E.164 dial plan and customized dial rules Supported IPsec and VLan SNMP V1/V2 T30/T38 Specifications: Operation temperature: 0 to 50°C (32°to 122°F) Storage temperature: -30° to 65° C (-22°to 149°F) Humidity: 10 to 90% no de