A VoIP GSM/3G/4G Gateway is a device that allows you to connect traditional phone lines or PBX systems to the cellular network via a SIM card, using Voice over Internet Protocol (VoIP) technology.

The device acts as a bridge between the cellular network and the VoIP network, allowing you to make and receive calls over the internet. It can convert traditional analog signals to digital signals and transmit them over an IP network, and vice versa.

With a VoIP GSM/3G/4G Gateway, you can enjoy the benefits of the cellular network, such as mobility and coverage, while still being able to use your existing phone system. This makes it an ideal solution for businesses or individuals who want to make and receive calls using their traditional phone system but also want the flexibility of using a mobile phone network.

Overall, a VoIP GSM/3G/4G Gateway can help you save money on long-distance and international calls and increase your communication efficiency.

Yeastar TG Series VoIP GSM Gateways connect GSM or WCDMA or 4G LTE to VoIP networks to provide two-way communication: GSM/3G/4G to VoIP and VoIP to GSM/3G/4G. This allows you to connect most IP-based telephone systems including Yeastar IP Phone Systems, and soft switches to a GSM or 3G WCDMA or 4G LTE; which can provide a sophisticated fallback solution when landlines go down, or be used to increase call traffic capacity by providing additional dial-tone.

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