GSM Fixed Wireless Terminal with PSTN (Public Switched Telephone Network) is a device that allows a landline phone to connect to digital telecommunications services via the GSM mobile phone network.

It features GSM900, GSM1800, GSM1900, VoIP, PSTN, landline phone, and SMS functions.

It is usually used in rural or remote areas where fixed line or traditional fixed telephone services are not available. The device is designed to provide voice, data, and SMS communication services over the mobile network.