The ETH about RM500Q GL

I have a module called RM500Q GL and I have successfully implemented the module to the ethernet port function with the RTL8125B.Then I want to send AT commands through the Ethernet port,but I found that I couldn’t do it following the AT command AT+QETH=“eth_at”,“enable”.So I would like to know how to send AT commands over the Ethernet port.

Dear @X_U
Which test environment? Windows or Linux?

Windows,I can’t understand how to do it.