An Analog Gateway, also known as an Analog VoIP Gateway, is a network device that connects traditional analog telephones and fax machines to modern VoIP (Voice over IP) networks. It acts as a bridge between the analog and digital world—enabling organizations to use their legacy telephone equipment with IP-based telephony systems like IP PBX, SIP servers, or hosted VoIP services.
There are two common types of analog gateways:
FXS Gateway (Foreign Exchange Subscriber): Connects analog phones or fax machines to a VoIP network.
FXO Gateway (Foreign Exchange Office): Connects analog trunk lines from the PSTN (Public Switched Telephone Network) to a VoIP network.
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