Unknown Anschluss (DSL)

Take a few photos of it (also of the plug if there is one on the purple cable), otherwise there is unfortunately nothing to say about it.

So this seems to be an old ISDN facility.

I would think that the purple cable is where the router goes.

But honestly, the Chrüsimüsi needs to be cleaned up properly. 😉

Hello @Wiflieya80

Whether the cable is too short or too long depends on where the router is supposed to go.

The question that concerns me more is whether the DSL cable goes directly to the UP or not.

It could also lead behind the ancient ISDN installation.

Problems are then most likely inevitable.

It’s best to pull a U72 cable directly from the UP to the location where the arouter goes. Without branching off.

Greetings Lorenz

Hello @Wiflieya80

The module has the number printed on it, which you can see clearly when you have your finger on it.

Greetings Lorenz

@Wiflieya80

To me the cable looks like the Swisscom DSL cable that is included with the IBs. Maybe it leads to the DSL socket, which is in another room and was simply used as an extension cable.

@Wiflieya80

This should work. You may also need to replace this can with a new BBR can to get better performance.

What could also be the case is that the cable that comes out of the middle socket was used as an extension cable and was plugged into the ISDN socket.

If you already have the IB, I would just try where the DSL signal comes from and then bring the installation up to date. If you know where the UP is, you can install a new U72 with SC BBR socket now. This way you can be sure that the installation is up to date and should work right from the start.

My two cents on that…

If this ISDN installation were carried out correctly (with labeling) the device could be connected directly by the ISP.

Sorry; - )

@Wiflieya80

The only thing that can be definitively concluded from this very interesting photo is that there is a locally based “measuring” that is certainly no longer technically up-to-date today.

In order to be able to decide what exactly is still being used and what cables and sockets should be replaced, the next step is to open all locally existing junction boxes and examine all cable connections in more detail.

The target solution is (as already mentioned) to have a single direct 2-wire cable for the DSL connection without any branches to further sockets from the selected sole router location to the Swisscom-UP (= transfer point of the Swisscom house connection), and any other cables The 4-wire socket in the picture could at most (if they already have 8 wires) be used as Ethernet LAN cabling from the router to other sockets in other rooms become.

In summary: Without a detailed examination of the cables that have already been laid and the sockets that have already been installed in other rooms, it will always remain a guessing game. 🙂

PS: Reichle BBR sockets, as partially mentioned in other posts, are also already outdated and are no longer of any use for returning the telephone signal via the built-in cable bridge to a second pair of wires, as this function is no longer available in the more modern Swisscom internet boxes is supported and should therefore no longer be reinstalled.

@Wiflieya80 the terminal numbers have been mentioned several times in this thread.

Here again for those who are forgetful.

from U72 cable: White = terminal 4, blue terminal 5

Where is the cable with the purple plug connected?

Normally when this ISDN socket is used for the DSL signal, the supply line is connected to ab1 or ab2.

Using the S-(0) bus on the ISDN socket is not a good idea and may still have resistors in it.

Otherwise use the 2-wire white cable (looks like a speaker cable and is connected to terminals 4+5 on the S-Bus) and connect it to the BBR-Keystone.

But I suspect that DSL signal is on the purple plug.

Trying makes you smart.

It’s best not to do it yourself and have a professional come, it’s less trouble and it works without any problems afterwards and not the kind of tinkering you want to do here.

I would be with the Kurt at the UP and quickly rung out where something arrives in the apartment and a new box is placed accordingly. (ISDN socket replaced)

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@user109 wrote:

@Wiflieya80 the terminal numbers have been mentioned several times in this thread.

Here again for those who are forgetful.

from the U72 cable: white = terminal 4, blue terminal 5

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Hmm, do you see a U72 somewhere in the photos? I only see a (probably misused) CAT and a double wire…

Intuitively I would have connected the double wire to terminals 4 and 5 of the Keystone module, although the connection method in the photos somehow doesn’t make any sense to me…

@PowerMac see my comment on this…

@Wiflieya80

Simply put, the external supply line must be routed directly to this socket and nothing else is needed.

So you would have to determine what the cable routing looks like!