What is the meaning of 4P 6P 8P?
The "P" here refers to the line, which means that you can line up a few lines at most
4P is the 4 line, 4 lines can be connected with the core, is the phone on the head, 6p is 6 lines, 6 lines can be connected with the core is connected with a telephone line, 8p has 8 lines, 8 lines can be connected to the core, this is connected to the cable crystal head.
8P is our most common network crystal head, 6P has not seen before, 4P is the telephone line plug, in actual application only uses 4P's intermediate two core
