Wie heißt diese Steckdose? (für Internet)

TLDR i use the first one of these 3 for internet, i ordered an adapter to convert it to RJ-45 ethernet connection so i can use my good router and not the shitbox i got from A1, but i ordered a wrong one (german version i think)

How is this called so i can order the proper one now?

[https://de.wikipedia.org/wiki/Telefonsteckdose_(%C3%96sterreich)](https://de.wikipedia.org/wiki/Telefonsteckdose_(%C3%96sterreich))

Cable: [https://www.mediamarkt.at/de/product/_hama-anschlusskabel-st-tst-modular-st-6p6c-3-m-schwarz-1861295.html](https://www.mediamarkt.at/de/product/_hama-anschlusskabel-st-tst-modular-st-6p6c-3-m-schwarz-1861295.html)

Adapter: [https://geizhals.at/4730205234](https://geizhals.at/4730205234) or [https://geizhals.at/406176776](https://geizhals.at/406176776)

What I don’t understand is that the A1 modem surely comes with a cable, why don’t you use that?