Epygi's QX Gateways are SIP-compliant, and can be utilized to include additional FXO, FXS, T1 or E1 ports to any of Epygi's or other manufacturer's IP PBXs. Integrating an Epygi QX Gateway with any QX IP PBX allows for the Gateway to be managed through the IP PBX's GUI. With built-in auto-configuration, firewall and secure VPN support, the QX Gateways are designed for a more user-friendly experience.