Suncomm Technology., Ltd.

with 4G 1SIM, 2 x RJ-11 for 4G – Analog network connection
SCG-1Q-4G Fixed Wireless Terminal is designed for 4G LTE to Analog connection (single port, insert 4G 1SIM card). The device can produce a FXS line to allow an Analog phone to be connected and used just like a local Landline (PSTN) except your calls will go out via 4G network. This device can both receive and make calls.

The main application is: Connecting the RJ-11 FXS line to connect Ordinary telephone set for voice call; to connect PBX for call extensions; to connect billing systems for public phone use; to connect VoIP FXO gateway to realize VoIP call termination; to connect alarm system for security purpose, etc.
It is not a VOIP gateway, nor a GSM+VOIP Gateway, It is a 4G Fixed Wireless Terminal that produces an analog FXS phone line.