What's the difference between texting by mobile phone and texting by gateway?

The information sent by the inverted mobile phone is connected to the mobile or Unicom cell tower through a signal, sent to the database, and finally reaches the area where the database of that area searches for the registered number of the other party, then sent to the cell tower, and finally accepted by the other party.

Computers use gateways to surf the Internet. After your cat (that is, dialer) is turned on, it will get the IP DNS gateway provided by the operator DHCP, and then the cat will give you a private network IP through its own DHCP, and then you can find the gateway gateway to access the external network instead of you through this IP! ! ! !

Simply put, if you buy soy sauce, the pass is the only way out for your village canteen! All right! You wait here! The manager drives a tractor to buy soy sauce for you! Finally, I will buy it back for you! The manager is the entrance! Now you see it! ! ! ! ! !