FYI ‘phone line’ is known as rj11, ‘ethernet’ is rj45. There’s different types of ethernet cable, most common is ‘cat5e’ that can transfer data up-to 1Gb/sec. Newer cables are usually ‘cat6a’ which adds shielding and up-to 10x the data transfer speed.

So when you go looking for a new one for whatever reason, you have the technical name and don’t have to look at the pictures and hope the listing is actually what you need.