Program-controlled telephone: a superhero in the telephone industry

Have you ever thought about what a program-controlled telephone is? Let me reveal the secret for you! Program-controlled telephone is a telephone accessed through a program-controlled telephone exchange. And this mysterious switch is controlled by an electronic computer. It relies on pre-programmed programs to handle every telephone connection quickly and effectively.

Little giant of science and technology

Compared with the traditional electromechanical switch telephone, the program-controlled telephone is simply a technological giant! Its connection speed is fast, business functions are rich and diverse, switching efficiency is super high, voice is clear and quality is reliable. It's like a superhero in the telephone industry!

Digital program-controlled exchange

Program-controlled exchange, also known as program-controlled private branch exchange or digital program-controlled exchange. It is a special switching equipment for telephone switching network, which uses computer program to control the connection of telephone. Digital program-controlled switches are divided into long-distance switches and local switches, as well as types dedicated to signaling networks and intelligent networks. They are like traffic policemen in the telephone network, ensuring that every call can be unimpeded.

fundamental function

The basic functions of these super switches include: subscriber line access, trunk connection, billing, equipment management and so on. They can automatically detect the user's off-hook action, send back the dial tone, receive the pulse signal or DTMF signal generated by the phone, and then quickly complete the connection from the calling number to the called number. Once the connection is completed, the switch will remain connected until it detects that the communication party hangs up.