In the US, how is your internet connection terminated in the home?

I’m based in the UK and I’m trying to find out how the internet connection is terminated in the US.

For example, assuming a wired connection via copper, in the UK we use RJ11 wall plates with the dsl signal on pins 2 and 3.

I know that in Europe they use RJ45 with the signal on pins 4 and 5.

Please can you advise how the service is delivered in the US?


It’s RJ45 cable termination in alternate choice of configuration, but I’m not the techie to try and explain the benefits, warts, or differences between the two.

my VERY, VERY limited understanding:

It will say right on the cable and we always use A in Canada . Both will work, both are accepted standards. Some customers will specify one or the other. IT types tell me, you should use the same for the permanent wiring as the patch wiring to arguably avoid a little noise at the transition.

A Crossover cable is made by doing one end in T568A and the opposing end T568B. Most commonly in Canada it is wired with T568A but if you purchase pre-made patch cables (and from China) they will most likely be wired as T568B.




If you are asking how internet service enters the home, we have either phone line delivery or coax cable. The modem does connect via RJ11 then is converted to RJ45 for distribution with either type of service. I can’t tell you which of the 4 conductors carries the data.

That’s great, thanks for the info… Much appreciated.


Secretguy. Funny 🙂

Reading this OP's question I am reminded of the old joke

"On the whole, how may girls have you kissed"?



Some civilized parts of the USA also have fiber connections. In that case, the fiber terminates at an ONT (Optical Network Terminator), which generally has a regular RJ45 connector, and talks plain old Ethernet protocol to your router/firewall (i.e., it goes into the WAN port of the router).

OK, many thanks. I now have the picture, pretty much the same as the UK and EU, which is great. There was a good reason for my question, so thanks all for answers.

@jeffseight was that on the whole, or on the hole? 😉

99% of the time, a coax cable is connected to a DOCSIS modem, which in turn is connected to a NAT home router.  For very new connections, fiber is available.


I use Ethernet connection for internet 

using Cat 11 cable from router to streamer and to integrated amp

Get better services late at night or very early in tgg by e morning 

Other times sound of music is not great



Mine is Fiber Optics to the converter on the side of the house

then from the converter to the router it’s a cat 6 cable each room has 2 separate plugs ran on separate lines from the router everything inside is all cat 6 wiring 

In my corner of the world, Cox Communications uses optical cable only for backbone connections. Inside the house, the signal is RG-6U to my cable modem. I'm running CAT7 from the modem's 2.5 Gbps port to the 2.5 Gbps WAN port on my router. From there, some connections are hardwired, some are AC Ethernet, and some are Wi-Fi 6.

Mine is the same as @badhippie.  Fiber to the side of the house then converted to ethernet to my router.