... fax gateway. It is highly integrated router, NAT, phone gateway functionality and has market-leading voice quality, rich ... specifically designed to be easy to use and affordable VoIP solution for both carrier and enterprise.Security and ... ,DHCP,NTP,TFTP ,TELNET ,PPPOE, STUNDTMF MethodRFC 2833,SIP InfoSignalingSIP(RFC 3261)over UDPProvisioningTFTP,HTTPManagementWEB browser, Telnet, Voice ...