LAN and Ethernet cable questions

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Vocalitus:

--- Quote from: Dawgz Rule on January 08, 2021, 08:55:08 pm ---Funny you should say that as it is pretty common. The beauty of it is that even with an RJ-45, you can still use a standard telco plug if you want to use it as a phone line. In one of my data center builds we ran Cat5e everywhere. If we needed a fax machine we just cross connected that run to one of our DID line blocks.

--- End quote ---

You will require a filter before plugging in a RJ11 into a RJ45 socket, especially if you have ADSL.

Dawgz Rule:
The T568A and T568B standards were specifically designed to be able to support multiple standards. This includes its ability to carry a POTS line as a POTS lines only requires Cat3 cable. Not sure what the purpose of your filter is, but if you are looking to simple leverage an existing Cat5e run for an analog device, you don't need a filter. The RJ11 plug will fit in the RJ45 jack without issue and will work fine. As per my earlier post, I wired a whole building with Cat5e versus running mixed lines. To use any run for an analog device simply required a cross connect from the panel to the DID block. This is pretty common in a lot of businesses.

Vocalitus:

--- Quote from: Dawgz Rule on January 09, 2021, 07:16:11 pm ---The T568A and T568B standards were specifically designed to be able to support multiple standards. This includes its ability to carry a POTS line as a POTS lines only requires Cat3 cable. Not sure what the purpose of your filter is, but if you are looking to simple leverage an existing Cat5e run for an analog device, you don't need a filter. The RJ11 plug will fit in the RJ45 jack without issue and will work fine. As per my earlier post, I wired a whole building with Cat5e versus running mixed lines. To use any run for an analog device simply required a cross connect from the panel to the DID block. This is pretty company in a lot of businesses.

--- End quote ---

Oh I must have been doing it wrong for over 35 years then. ::)

Dawgz Rule:
It may not be "wrong", but certainly is unnecessary for the application that I am presenting. We could simply be talking about two different scenarios here.

In the specific application of a DSL line, you might need such a filter or a filter/splitter. That's a very specific application and use and has nothing to do with ethernet as it does with the fact that it is DSL.

On the other hand, if I am simply plugging into an ethernet jack with an analog device and using that run all the way back to a block, it's a straight copper run. More importantly, it's a straight copper run on a cable that far exceeds the Cat3 standard for such devices.

Perhaps if you can explain the purpose of this filter you keep referring to, it might help me understand where our disconnect is?

I honestly don't know how much experience you have in an enterprise data center, but even a quick google search brought up the following:

"It is pretty common to see UTP Cat-5, 6 or 6a cable being used for phone lines in newer construction or installations, the cost of the cable is not that different and it just makes it easier for the installer to just have to run one type of cable for both phone and data. You can even use RJ-45 wall jacks for phones because RJ-11 plugs will fit, though you can only access up to two pairs or 4 wires in the RJ-45 wall jack.

You can see this in many office buildings, and if they use RJ-45 jacks for both data and POTS phone the jacks should be marked and are usually a different color. It the business uses ISDN or VOIP then the wiring needs are different, but can be usually be supported on Cat-5, 6, 6a cable and RJ-45 wall jacks"

mameotron:

--- Quote from: Typefighter01 on January 05, 2021, 07:39:51 am ---Could one of you fine gentlemen just confirm for me that either a switch or a router will support both surfing the net and local LAN style gaming and it will save me running a secondary redundant cable from bedroom to bedroom?

--- End quote ---

Just to clear up any confusion -
You can't just run a standard cable directly from one computer to another. You would need a "crossover" cable to do this. You need to run a cable from each computer to your router. Your router connects both computers to the internet and each other.

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