Copper Cable Issues

Incorrect pinouts -

patch panel - most use 569B . white orange orange white green blue white blue green white brown brown.

wall jack - same layout four pins on one side an one on the other. it’s a keystone.

j45 connector. - connect copper pins to the wires. not labaled 568B . when you hold it up you can. see the pins and count them.

bad port - connect a loopback device to the port.

if the device is faulty , switchout the port on the router. if it is a router may be able to swich out th interface spot.

opens - there is nothing on th eother end of the connecton, if there is a break in the wire.

shorts - two wires are connected together. cable is pooly made and the rj45 is not properly connected.

cable teste, cable certifier, wire mapping tool.

understanding the correct tools for what issue.