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What is a VoIP Gateway?

Uploaded2021/9/8 0:00:00     Hits    Source

What is a VoIP Gateway?

A VoIP gateway is a hardware device that can convert analog telephone signals into digital signals, and can convert calls between an Internet-based IP network and traditional copper wire fixed telephones for the transmission of voice data. After converting the signal, the VoIP gateway organizes it into data packets and encrypts them for transmission. VoIP providers use VoIP gateways for switching and network interfaces.

STM-1 over Gigabit Ethernet 63E1 VOIP Trunk Gateway

How does a VoIP Gateway Work?

The working mode of a VoIP gateway is very similar to that of an Internet router. The working principle of a VoIP gateway is to relay communication from an IP address to an IP address or from an IP address to a traditional telephone line. Therefore, a typical VoIP gateway is connected to both the IP network and the traditional telephone circuit. These gateways can be configured to access the Internet and traditional telephone lines in several different ways.

VOIP Phone

Types of VoIP Gateway

Analog VoIP Gateway

FXS Gateway

The FXS gateway connects analog phones and fax machines to the VoIP phone service through an Internet connection. This type of VoIP gateway allows you to keep your existing hardware while using a lower-cost VoIP provider.

FXO Gateway

The FXO gateway connects the incoming analog or public switched telephone network (PSTN) to the VoIP telephone system. This type of VoIP gateway allows you to connect an analog telephone system using a traditional private branch exchange (PBX) network to a business phone service provider that supports VoIP through a physical connection.

Digital VoIP Gateway

Digital VoIP gateways are small independent devices that are used to combine individual VoIP lines into a collective system, and can also be used to connect traditional PBX systems with IP networks. They are the most cost-effective solution for companies that have traditional telephone system infrastructure and want to connect to a VoIP network.


Nowadays, VoIP is becoming more and more accepted around the world. Many enterprises use VoIP to work from home rather than work in the office. With the improvement in internet infrastructure, the use of VoIP will be more worldwide.

Baudcom offers all kinds of VoIP devices. For more information, please visit Baudcom.

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