... and 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 reliabilityAdministrator ... 2, ETSI,BT,NTT, and, DTMF-based CIDPolarity ReversalYesHomologationSafetyULComplianceFCC,CE VoIP SIP Gateway With 32FXS Ports