How to forcibly unbind a broadband account from a physical port? If not, how to connect the network cable of Netcom to the telecom account (everything is possible)? ...
This can't be done. The two operators are two completely different networks. No matter their ports or uplink lines, they are not related to each other, and their accounts cannot be used universally. As mentioned above, they can only apply for another Unicom broadband by themselves, or lead a network cable through their neighbor's Unicom network.