Description: Integrate Your Analog Phone Lines with VoIP Using the Grandstream GS-GXW4108 The Grandstream GS-GXW4108 is an FXO gateway designed to seamlessly connect your existing analog phone lines (PSTN) with a modern Voice over IP (VoIP) system. This allows businesses of all sizes to make a smooth transition to VoIP technology, while still utilizing their current phone infrastr... https://www.blumenit.com/product/grandstream-gs-gxw4108-8-port-fxo-gateway-voip-phone-device-grandstream-gs-gxw4108-413drue7