My home is old (like over 20 years), and we just renovate it last years. Later on, I started to use another part of my home, and that part wasn't touched for a long time (not during the renovation). I took a router to one of the socket and try to get internet, and I found a telephone socket. After opening the socket lid, I found a pipe with 8 cables in it (just the same as ethernet) with weird color code that I don't recognize(I'm sure it's not ethernet color code, and I cannot find anything about it anywhere). Two of them is already connected to the telephone socket and 6 remained unused. I attached the picture: I see brown, black, red, white, purple, green, yellow, and blue(yellow and blue is attached to the telephone socket). All of them has solid color. Nothing is written on the outer pipe. What is this type of color code? Is it possible to be converted to ethernet cable so I can access internet?