Information jacks and modules are nested together, network wire embedded in the wall and outside network wire are connected by information modules, and network wire inside the wall and information module are connected by 8 solid cords of network wire according to regulations bayonet information modules into the parallel slots. The bayonet of network wire needs a special tool that is called impact tool, which is also called "impact plier", multi-pair impact tools are usually used in mounting network solid cord of distribution frame.