Why is it that networking cables can be wired the same on both ends?

With phone lines, you traditionally have to reverse the TX and RX on one end.

Does this have anything to do with Ethernet having a separate pair for TX and RX and the RJ45 jacks on the NICs are always expecting pin 1 to be TX+ and pin 3 to be RX+ and they somehow work it out (Auto-MDIX?)?

Thank you, I haven’t been able to get a clear answer online.