Avoid using Extension Wiring to Improve your Broadband Speed

Published 13/04/2005 13:14   |    Updated 25/03/2009 15:25
Why is telephone wiring quality important for a good quality broadband connection?

It is very important that you make sure that your phone line is in good condition. If the telephone wiring in your home is old or deteriorating, you might be picking up stray signals or cross talk from other phone lines. These problems will slow your Internet connection because the modem/router will have to send the same information over and over until it is transmitted without interruption.


Check your telephone wires to be sure they are not damaged, frayed, or twisted around power or other telephone cables. If you notice crackling in your phones, you might want to contact your phone provider (call 1904 for BT, call 1901 for eircom) to have them check the lines outside your home to make sure they are in good condition. If you notice problems when making or receiving phone calls then chances are you will also notice problems with either the speed or stability of your broadband connection.


Wiring is the number one cause of broadband connection issues; a lot of people suffer simply because of poor wiring inside their home. The standout piece of advice is to plug your ADSL equipment (router/modem) into the Demarcation Point (a.k.a. drop point or master socket) – the main point in your home that the cable leads into and that all other sockets daisy-chain from.

Placing the modem or router on an extension socket leaves it at the mercy of the internal wiring and in the same way broadband speeds decrease significantly the further your house is from the local telephone exchange, the same principal applies in your own home.

If you must use an extension socket, make sure the wire stretches no further than 3m. We recommend that you keep any extension wiring as short as possible, use copper rather than aluminium extension leads, and route them to avoid areas of electrical interference such as near power cables, digital phones, microwave ovens, Christmas tree lights, high-wattage equipment, and halogen lighting etc.


If you look at the speed statistics of your router and it’s considerably less than expected, it’s clear something’s going wrong in the home. If you’re noticing a significant drop-off, check the extension wiring – make sure no tacks have been hammered through the cable, for instance.

If your ADSL equipment is connected to the master socket then the quality of the cabling plays a huge part in the sync speed that can be obtained; the higher the quality cable the better. Running network cable around your house can be the simplest solution, but sometimes can be messy or impractical. If you can't avoid using extension sockets or cables then you should consider using a wireless router.


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