Sunday, January 19, 2014

the new NFC - 15100 standards for electrical installations in the home

With the new NFC - 15100 standards for electrical installations in the home, phone lamp plugs "pull" type, that is to say, the good old T taken in reverse, are replaced with RJ45 network sockets.

After some research on the net, I realized that so it was easy to find the wiring diagrams of the old lamp plugs, especially not with the wind in the case of the famous RJ45. Here is the result of my research into practice.

Firstly, the phone comes to the house by the PTT cable: general two gray son. In older plants, the gray son can get a box, it even gray, with two fuses, which have become obsolete. This box located at the top of our front door, is the property of France Telecom, which is responsible for the line that gets there, and should not normally touch. After this dialog is the domestic installation and you can do what you want.

Today, the standard plans to replace this box with another box called DTI (Termination Device Interior), which was installed in the basement, next to another junction box for TV antenna:

DTI has a terminal twelve blocks numbered. It connects our network cable, which is the type grade 2 FTP. This means that it is a cable with 4 twisted pairs (to reduce noise), with a shielding foil. This creates a telecom infrastructure in theory and computer network for applications to 250 MHz for a length of 60m. This is not the best, but it's good for a reasonable price. At best, it provides a residential computer network to 1Gbit / s and possibly the TV (but not in HD). Well, at first, these cables will just serve for telephone and ADSL.

At the other end of the cable, including the living room, there is a RJ45 lamp plug associated with the antenna lamp plug (bottom):

Connecting the network cable to the RJ45 lamp plug was performed according to EIA Standard 568 (there is also the B. but it does not change much as long as it remains consistent for each socket in the house)

With Céliane model Legrand, just press each strand in a metal notch that will cross over to the fine sheath. There's no need to strip strand is automatic!

Regarding the TV, this was used to signal for our HD freebox channels. The quality seemed to us good, but a significant improvement was achieved by DTT via the antenna cable.

No comments:

Post a Comment