Cable, DSL & Wireless Modems
USR-G786-G Global Frequency Industrial M2m Serial Rs485 4g LTE Modem GSM Serial Modem
Work Mode: Transparent Mode, HTTPD Client Mode, SMS Mode TCP Server/Client,UDP, Modbus RTU to TCP RS485/232 to 4G modems
https://www.bizrate.co.uk/cabledsl_wirelessmodems/usr-g786-g-global-frequency-industrial-m2m-oid24490677847.html