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SMS modem pool is a large SMS sender consisting of 16 GSM modems. After the modem pool is connected to the computer via a USB cable, the computer displays 16 COM ports.

An SMS gateway allows you to send or receive messages between the local or international telecommunication networks in the form of the short message service or multimedia message services. It is routed in the mobile phone through the wireless carrier. It is used for person to person to the device to a person.