Mở Command Prompt. Khởi động máy khách Telnet. Kết nối máy chủ Telnet. Đóng phiên làm việc Telnet lại.

Given the above summary, write a detailed text in English for it.
Telnet runs through the Command Prompt. You can access the command prompt by pressing Win and typing cmd into the Run field. Type telnet and press ↵ Enter to start Microsoft Telnet. The Command Prompt will disappear, and you will be taken to the Telnet command line, displayed as Microsoft Telnet>. At the Telnet command line, type open serveraddress [port]. You have successfully connected to the server when you receive either a welcome message or are prompted for your username and password.  For example, to watch ASCII Star Wars, type open towel.blinkenlights.nl and press ↵ Enter. You can also start a connection directly from the Command Prompt by typing telnet serveraddress [port]. To do so, open the Telnet command line by pressing Ctrl+]. Type quit and press ↵ Enter to close the connection.