Joke Collection Website - Blessing messages - How does the mobile phone send short messages to the fixed telephone?

How does the mobile phone send short messages to the fixed telephone?

Hello, the fixed telephone can receive short messages. The mobile terminal sends a short message to the fixed telephone. Please add "10602 1" before the fixed number. You will hear: "You have a new message." After that, I heard the content of the message. Prompt "Please press 2 for forwarding, 3 for reply and 4 for previous item"