What is a threading pipe? Jumper frame distribution frame?

I'm from the hotel. Let me be clear with you.

For example, threading pipe, if it is impossible to thread indoors, it is necessary to put anti-corrosion and leak-proof pipes for threading. Usually in the wall.

Jumper frame, the upper layer is the switch, the lower layer is the distribution frame, it is a shelf ... convenient for jumper.

The patch panel is usually the number connected to the room. Write down the line and room number, usually the distribution frame.

In a cabinet, the first floor is a switch, the second floor is a jumper, and the third floor is a distribution frame ... Our company's distribution frame is used to install telephones and multimedia digital telephones ... and there are other uses ... You can ask others.