Deutsche Telekom - Glasferausbau

[Patrick M. Hausen]

I see 2 pairs/4 wires 😉

Your DSL line needs only one of those pairs. I would replace the TAE outlet with a 2x RJ45 one, connect pins 4 and 5 on each with one pair, and make sure DSL still works.

To prepare for the fibre connection you can then pull the unused pair from the LSA connector and extend it to a length reaching out of that box and leading to the modem. E.g. cut the plug from one end of an RJ45 patch cable, connect lines 4 and 5 to that free pair, done.

Make sure to get the modems with RJ45 if you go that way.

TAE replacement - make sure to get "ISDN" outlets with screwed connections, so you won't need an LSA tool:

- in wall: https://www.inline-info.com/InLine-ISDN-Anschlussdose-2x-RJ45-BU-Unterputz-Schraubanschluss-2x-8-fach
- on wall: https://www.inline-info.com/InLine-ISDN-Anschlussdose-2x-RJ45-Buchse-Aufputz-Schraubanschluss-2x-8-fach

To extend the wires in the box these come in handy:

https://www.amazon.de/ScotchlokTM-Einzeladerverbinder-Schwachstromverbinder-Signalkabel-Kabelschnellbinder/dp/B0972RRXGC

HTH,
Patrick

[chemlud]

Yepp. two pairs, as currently two different Telekom accounts, one analog number (really!) and one DSL line.

As I wrote above, the "unused" pair of cabels (after switching the analog account to fiber) does not end in the correct room. Only the DSL pair of cables (I want to have functional even after fiber established) ends in my office, therefore I will have to connect these modems to the same two cables my DSL is delivered nowadays and should be delivered in the future in parallel to the fiber connection.

Both, DSL and and fiber, should use the same pair of cables in the end.

[Patrick M. Hausen]

Difficult but not impossible.

Use the DSL pair of wires to connect a pair of those modems. You now have a Gigabit Ethernet connection which is VLAN transparent between the two ends.

Move the external DSL modem (you have one, right?) to the wiring room, mount a new on wall TAE, lead the two wires for DSL to the TAE and connect the DSL modem.

Connect the ONT to the fibre line, also in the wiring room.

Now you have one Ethernet but two uplinks. So the missing piece is a small VLAN capable switch like a Mikrotik Hex.

You will need an LSA+ tool and a bit of experience with these things, some phone wire, a TAE outlet and some of the connectors I linked above.

If you don't know which pair (1 or 2 on the LSA) is DSL and which is phone you also need a wire identifying device. IIRC I also linked one, already.

Or given you have an LSA tool to reconnect, gently pull one wire and check which service (phone or DSL) fails.

[nero355]

Yepp. two pairs, as currently two different Telekom accounts, one analog number (really!) and one DSL line.

Analog phone lines are pretty much dead from what I have understood : They are all EPOTS these days !!

So you should have just asked your ISP to combine those two for a nice Bonded VDSL2+ 200/60 Mbps connection if possible :)

[chemlud]

Ha, new idea, much simpler!

I opened the wall box where the cabel to my office starts from (inside a TAE plug device) and found two unused cables to my office (red cables, see below). After the fiber is built and connected, the analog telephone line (in the TAE box) will go down and the two cables are free!

If I connect the cabels now going into the TAE plug with 2 free, red wires I have a FREE connection to my office, which I can use for these modems to connect the ONT with a sense in my office.

So with 2 modems G4201T I would have to cut the RJ! connector on the side for the ONT and connect which cable with which in the Hausübergabepunkt (see post above).

On the router-side I would have to find a TAE/F to RJ11 cable or cut the RJ11 from the cable and connect the cables from the wall directly to the RJ11 plug for the modem.

Correct? :-D
 

[Patrick M. Hausen]

Looks good. I went with G4202T modems because they come with RJ45 instead of RJ11.

[chemlud]

Which advantage has RJ45 over RJ11? I'm totally unsure to which cable I have to connect the RJ11 plug,,, is there some kind of cabeling plan for RJ11/RJ45 available?

I have no LSA tool (and no experience with that at all...) but only a cheap rj45 crimp tool. Sounds crazy to have 1.5 Gbit with homebake stuff like that.

[Patrick M. Hausen]

You need only the two centre wires. Thats (with 6 total) 3 & 4 for RJ11 and (with 8 total) 4 & 5 for RJ45. This is really just "mechanics". RJ11 is the international equivalent of TAE with 6 wires total.

Common patch cables are RJ45 so I try to keep everything that way.

[athurdent]

Over here most people buy either a Huawei ONT or Nokia ONT for XGS-PON connections like this one : https://www.wisp.pl/p12211,huawei-optixstar-en8010ts-20-terminal-xgs-pon-ont.html
_{(Sometimes from the very same webshop by the way!)}

Usually not very cheap and the availability is not that great either...

Would you happen to know if the Huawei allows changing the ID, so we don't have to contact the ISP when switching ONTs?

[athurdent]

Any experience with Deutsche Telekom on that?

The line itself is great here (dual stack IPv4 / IPv6, no 24h Zwangstrennung).
But careful, with German Telekom you'll get very bad Cloudflare peering. In fact, they don't have any direct peering and the transits are often crowded. Their community forum is full of angry customers, just recently it was very, very bad. Their support team is so desperate, they even recommend switching the ISP (temporarily with a VPN provider, but still).

[chemlud]

@athurdent is the peering problem relevant only for Gbit? or even with lower bandwidth? my 120 Mbit DSL from Telekom is not that a problem for my use cases.

What is the problem with Zwangstrennung? I do that "manually" every night, line up again in very few seconds with fresh IP...

[chemlud]

mildly OT, but...: After opening the wall box depicted above and moving the cables, my DSL went down. I cut the connection (just twisted some 10 times! no soldering!) and reconnected the ends and DSL came back.

checked the remaining cable residues with Ohm-meter, both apparently intact, so no idea what broke my DSL

can the connection be soldered? or is twisting the free ends standard? ***glotz***

[Patrick M. Hausen]

Buy a handful of the connectors I linked here:

https://forum.opnsense.org/index.php?topic=50978.msg261042#msg261042

[nero355]

Would you happen to know if the Huawei allows changing the ID, so we don't have to contact the ISP when switching ONTs?

It was a long time ago that I have read about the Huawei and at one point pretty much everyone started buying the Nokia 010 which is preferred by the ISP so I can't tell you anything about that except one thing : It is highly NOT RECOMMENDED to do something like that !!

IIRC it might even get you banned on the network of the ISP !!!