Testing you phone and network cables which you use to connect your computer to your modem, router, hubs and switches to connect to your network, or the internet is very easy when you have a Network phone cable tester tool.
A portable Network + Phone cable tester cost between 5 dollars to 10 dollars which you can get on Amazon or eBay. It usually runs off a 9 volt battery which you can get at almost any electronics or hardware stores. The Cable tester uses DC electricity from the battery to test if the cable is not broken, and network and phone signals/electricity can flow freely on the cable because the wires inside the cables are not broken.
Note: Network Cable is also called RJ 45, and CAT 5/5E/6 cables, and Phone cables are also called RJ11 cables. Network cables are like phone cables, but have more wires, a thicker cable, and bigger plugs then Phone Cables
Instructions to use Network Cable Tester
Turn on the Network Cable Tester, and a light should blink meaning it has power.
Nest, plug your network or phone cable into your cable tester, and turn it on. If the lights blink on the cable tester in a continuous way then your cable is working fine.
Only plug in one type of cable in at a time. This means you should not plug in your network and phone cable in at the same time to test to avoid errors and confusion when testing.
But, if your cable is broken, it won’t blink, and some cable testers will make a warning sound to warn you if the phone or network cable is broken.
When you are done testing your cable, unplug it from the tester, and turn off the tester.
If your cables are fine, it could mean your modem, router, switch, computer, hub, operating system, and ISP are causing your network or internet connection problems which are causing you not to be able to connect to the server, other computers, network, or internet.
You might also want to change to shielded Networking or phone cables if you have a lot of magnetic and electrical interference from fluorescent lights, motors, vacuums, etc which can cause problems with unshielded cables.