Telephone Socket InstallationI can run additional telephone sockets where you need them in a house/ office, either just to have an additional handset plugged in or as a mains fail handset (if the mains goes down and none of your cordless phones work) or for a fax machine or for connection to Sky TV or for connection to your Broadband router or even for use with a modem.
To put you in the picture so to speak, the picture below shows BT's old version of the NTE5 with the Telecomm T on it, newer ones have a BT logo and the very latest an Openreach logo.
The point of the NTE5 is to give BT a demarcation or test point for an engineer to isolate the external wiring from the internal wiring. The NTE5 above is open to reveal the frontplate which is where internal wiring to extensions is attached. Prior to the NTE5 BT used to provide a Line Jack Unit similar to this
Before that came the BT52a which was not a socket but a hard wired termination point.
And before that came the BT20/4 or variants which also were not sockets but again
hard wired termination points.
Very often a Broadband service provider may well diagnose a Broadband fault as needing the BT NTE5 changing. This happened recently. The ISP insisted the NTE5 was faulty and I doubted it. In fact the internal wiring to the NTE5 was faulty and once I had isolated the fault the problem was solved without the need to change the NTE5.
As for wiring a new extension socket the cheapest option is usually surface wiring with surface boxes. The cabling is only small diameter so is not very obtrusive. Depending upon situation I can either run the cable along the skirting board or simply drill out through the wall and run the wiring on the outside of the building and re-enter wherever the extension is required. Cabling can be concealed under carpets assuming it is not going to be in areas of high wear or if it is fixed to the skirting board, it can be decorated over to hide it even more. I can also put wiring in trunking, under floorboards, in false ceilings, wherever you like. The more difficult a route quite simply the longer it will take and the more expensive it is because of the time taken and because of the cost of the additional materials in the case of trunking for example.