Foreign Exchange Office (FXO) is a telephony interface that connects a VoIP system or PBX to analog Public Switched Telephone Network (PSTN) lines. FXO ports receive signals from the PSTN and allow VoIP systems to make and receive external calls over traditional phone lines. They are typically found on VoIP gateways or PBXs that support analog connectivity. FXO interfaces are crucial in hybrid environments where businesses are transitioning from analog to VoIP, ensuring continuity during the migration process. They also provide a backup communication channel in case of VoIP service failure. FXO integration helps businesses maintain a seamless connection between modern IP-based communication systems and legacy analog networks.
What is FXO?
FXO (Foreign Exchange Office) is an interface that connects VoIP systems or PBXs to analog PSTN lines, enabling external communication.
