FXO Insights | Sumble

What is FXO?

FXO (Foreign Exchange Office) is a port used by a telephone system (typically a PBX) to connect to an analog telephone line, commonly from a public switched telephone network (PSTN). It's essentially an interface that receives the analog phone line. The device with the FXO port is the one that receives the signal, analogous to answering a phone call. It's used to terminate analog lines into VoIP systems or other telephone equipment.

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What other technologies are related to FXO?

FXO Competitor Technologies

PRI

PRI (Primary Rate Interface) is a competitor because it is another way to connect a PBX to the PSTN. Both FXO and PRI provide access to the PSTN, but PRI is a digital connection while FXO is analog.

mentioned alongside FXO in 2% (66) of relevant job posts

FXO Complementary Technologies

FXS

FXS (Foreign Exchange Subscriber) is complementary because it provides the interface to connect analog phones to a VoIP system, while FXO provides the interface to connect to the PSTN. They work together to bridge analog devices with digital networks.

mentioned alongside FXO in 73% (135) of relevant job posts