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    Warum verwenden belgische (und niederländische) Haushalte dieses seltsame Ding für Telefonkabel?

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    1. iLoveSoftSkin on

      Couldn’t our ancestors just create an rj11 (phone) port instead of a weird adapter for phone cables?

      And can they be repurposed for ethernet (rj45)?

    2. DJJASPER21 on

      Because you can stack those ontop of each other.

      And mostly not since they are cat3 cables or VVT (SVV) cable and they are not suitable for Ethernet. You’d get max 10Mbps out of them if you got it to work.

    4. KostyaFedot on

      RJs are flaky, gets eventually loose. 
      This thing is matching Belgium homes, brick like build to lasts.

      Even electrical power cables are used for internet. 

    6. SolidTerre on

      Local telecom companies (RTT/Belgacom – now Proximus) set their own national standards (like the 5-pin) before the RJ11 (an American standard) was common globally. It was cheaper to use adapters than rewire every house.

      ​Now some things seem like a no-brainer, but at the time, those national plugs were robust and designed for technicians, not easy consumer plug-and-play. The RJ11 was a huge simplification later on.

      ​Old phone lines only have 2 or 4 thin wires and aren’t twisted properly. Ethernet needs 8 higher-quality, twisted wires, so you’ll can’t repurpose it.

    7. harry6466 on

      Isn’t this to filter out phone frequencies vs internet frequencies?

      I’m no expert though

    8. TheDarkgg on

      Because France and other northern countries already had their own telephone network standard before the RJ11 was standardised, and above all because the ‘T-plug’ already existed well before the RJ11 -> 1950!

      Whereas the ‘RJ11’ was only standardised in the USA from 1976 onwards!

      This is why most homes built before 2003 have this type of socket, and it is mandatory to have this adapter to use RJ11 and therefore the internet!

    9. RamBamTyfus on

      It’s just history. No one is installing these sockets anymore. The last time these plugs were useful was when ISDN still ruled, and people had more than one fixed phone in their house. It hasn’t been relevant for at least 20 years.

    10. thmoas on

      you can stack them at the other side are 5 holes that also connect so one for phone one for modem one for fax, it was easy.

    11. hmtk1976 on

      Looks like someone has visited a museum!

      These days RJ-45 is – or should be – far more common.

    15. JohnnyricoMC on

      So these plugs are/were the standard plug for copper-based phone landlines here. Others have already pointed out this is a historical thing from when each country had their own standard.

      Now if you still have DSL as your internet uplink, there’s a good chance you also still have wall sockets for this plug type in the house. DSL goes over basically a phone landline with the bandwidth cranked up. To prevent phones from using up all that bandwidth you need to use a splitter. Without one,, phone calls could cause interference on the DSL data signal (and losing your internet connection when someone made a call, well that’s from the old dialup days)

      Typically, you would plug the splitter into the wall, then stack the regular phone plug onto that splitter. (so not in the RJ11 port you see here, that’s for your DSL modem, but on the back of that plug). This separates the data signal from the telephony signal. You need to use a splitter for every landline phone in the house. Fortunately those are pretty cheap.

    16. pimjas on

      The Dutch and Belgian ones are slightly different from each other. Just national phone networks creating their own plugs- there wasn’t a need for an international standard when state-owned companies ran the show.

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