Grandstream GXW4108 8x FXO Ports Analog VoIP Gateway

This gateway is needed, for example, to convert each analogue telephone connection to SIP. You receive an Internet box with a built-in analogue connection from your provider, but your provider refuses to provide the access data for telephony or the SIP trunk. In this case, you can connect the FXO ports of the GW4108 to the analogue FXS telephone line, and the GW4108 will receive the incoming call and convert it to SIP protocol to connect the call to a SIP telephone via SIP protocol in the local network.