The FIBERME FAG4108 Gateway is a professional FXO VoIP gateway designed to connect up to 8 analog PSTN lines to your IP network. Featuring SIP protocol support, T.38 Fax over IP, dual Ethernet ports, advanced voice codecs, echo cancellation, and web-based management, this gateway is perfect for SMBs, call centers, and enterprises seeking reliable PSTN-to-IP integration.