GSM Gateways

GSM Gateway, also known as cellular gateways, are a popular solution for businesses looking to integrate their traditional phone system with VoIP technology. These devices utilize a SIM card to establish a connection with a cellular tower, allowing them to tap into the existing cellular network. Once connected, the gateway then converts this cellular connection to SIP (Session Initiation Protocol), a standard protocol used for initiating, maintaining, and terminating real-time communication sessions, such as voice and video calls over the internet. This allows the gateway to provide the cellular connection as a trunk to a VoIP PBX (Private Branch Exchange), essentially enabling the integration of cellular and VoIP calls within the same phone system.

The number of SIM cards a GSM Gateway can hold is a critical factor in determining the capacity of the gateway. Each SIM card represents a potential channel for making and receiving calls, so the more SIM cards a gateway can accommodate, the more concurrent calls it can handle. This scalability makes GSM Gateways a flexible solution for businesses with varying call volumes, as they can easily add or remove SIM cards to adjust their capacity as needed. Additionally, some GSM Gateways offer advanced features such as SIM rotation, which automatically switches between SIM cards to distribute call traffic and prevent blockages. These features contribute to the reliability and efficiency of GSM Gateways in managing cellular connectivity within a VoIP environment.

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