Hello, friend!
H122-373 is a consumers device.
I understand your requirements. you want to remotely access H122-373 through Telnet, but port forwarding cannot be implemented to remotely access the device. Due to device security restrictions, the web and access ports of the device need to be accessed through local network cables.
Since H122-373 is a consumer device, you can remotely access and manage the device through the AI Life on your phone.
Thanks!