Deutsche Telekom - Glasferausbau

Started by chemlud, February 18, 2026, 06:18:08 PM

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I just bought three of those to get Gigabit speed to my wife's and my desk over telephone wire. They work splendidly and are transparent to 802.1q so you can connect trunk ports of two switches.

https://www.gigacopper.net/wp/heimvernetzung/

Should you need to bridge some distance from the optical outlet to your OPNsense. "Nail" the ONT to the wall near the outlet, go with a single pair of copper from there.
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

Quote from: Maurice on February 19, 2026, 03:38:24 PMDeutsche Telekom does not give you a free ONT. You have to buy or rent one.
Can you choose a different ISP that operates on their network and get one that way ??

Quote from: meyergru on February 19, 2026, 04:52:46 PMReally? Interesting. Both M-Net and Deutsche Glasfaser give you one.
We have something really weird here in The Netherlands on the Delta Fiber Network :
- Choose Delta as ISP and you don't get a Nokia 010 ONT and get a Nokia "All-in-One" model instead.
- Choose any other ISP that operates on their network and you get the Nokia 010 ONT and a seperate Router from ZyXel.
And that Nokia 010 ONT has a huge DELTA sticker on it !!! LOL !!!

QuoteEither way, they are dirt cheap (30-50€). I just bought an LXT-010H-D from wisp.pl and that also has 2.5 Gbps.
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...
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XGS-PON ONT prices are a lot higher than GPON ONTs. They often draw a lot more power, as well. As long as you do not have a rate > 1 Gbps, you can use a GPON ONT, because XGS-PON is mostly downwards-compatible. In Germany, there are only a few ISPs who already offer XGS-PON - we sometimes use to call it "digital diashora".

In theory, one could have up to 2.5 Gbps downstream over plain GPON, BTW.
Intel N100, 4* I226-V, 2* 82559, 16 GByte, 500 GByte NVME, ZTE F6005

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Quote from: nero355 on February 19, 2026, 09:31:00 PMCan you choose a different ISP that operates on their network and get one that way ?
Sure. Deutsche Telekom, Vodafone, o2, 1&1 will happily sell you the very same ONT with a slightly customized enclosure and their own logo slapped on it. :)

https://hack-gpon.org/ont-sercomm-fg1000b/#other-brand-names

Quote from: meyergru on February 19, 2026, 10:14:40 PMAs long as you do not have a rate > 1 Gbps, you can use a GPON ONT, because XGS-PON is mostly downwards-compatible.
A GPON ONT can't talk to an XGS-PON OLT, they even use different wavelengths.
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The only thing you cannot do is to "clone" an ONT because the ISP-provided ones are often locked. Cloning provides the benefit of having a cold standby in case the original ONT dies.

The equipment the providers usually have can do both XGS-PON and GPON or they give you a port that is suitable for you depending on what the ISP knows (or thinks) you have. Technically, they can also optically mix XGS-PON and GPON OLTs on the same customer fibres, just because of the different wavelengths.

You would be hard pressed to find an ISP that starts with XGS-PON and has only that. Although that might be true of Telekom when they now start a new "Ausbaugebiet".
Intel N100, 4* I226-V, 2* 82559, 16 GByte, 500 GByte NVME, ZTE F6005

1100 down / 800 up, Bufferbloat A+

XGS-PON? GPON OLT? What are you talking about!?!?

Gf-AP? Gf-TA? What'S that?

@PHM: The boxes sound fun and have funny prices! Which cabeling are you going to use? Old telephone line? coax? Cabeling is not trivial, I guess...

I tried to check availability of Glasfaser at my adress at Telekom homepage several times in the last days, but only got "momentan nicht erreichbar". Apparently the neighborhood is not so keen on fiber. The DT stalker is really trying to press to make the project work, apparently he will not earn any money otherwise...
kind regards
chemlud
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February 20, 2026, 09:39:46 AM #21 Last Edit: February 20, 2026, 09:43:15 AM by Patrick M. Hausen
I am already using old telephone wires. That's the point. Cabling is trivial with this product. Use any old "shoe laces" (ok, copper wires) you might have in your wall, already.

When we moved into this appartment 25 years ago there were phone outlets in every room. I replaced all TAE (German phone) outlets with RJ45. I have been running Fast Ethernet over them all these years and that's still enough for e.g. the Apple TV in the living room. DSL uplink is 100 Mbit/s, anyway.

But both of us wanted a faster connection from/to the servers (NAS etc.) to our desks and then some homelaber made a YT video about these Gigacopper boxes.

So if the distance from where DTAG will deliver your fibre to the location of your main network is an issue you could use any old phone wiring you might have in place and get Gigabit speed.
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

Quote from: meyergru on February 20, 2026, 08:48:11 AMThe equipment the providers usually have can do both XGS-PON and GPON or they give you a port that is suitable for you depending on what the ISP knows (or thinks) you have. Technically, they can also optically mix XGS-PON and GPON OLTs on the same customer fibres, just because of the different wavelengths.

You would be hard pressed to find an ISP that starts with XGS-PON and has only that. Although that might be true of Telekom when they now start a new "Ausbaugebiet".
Using a GPON ONT on any of the XGS-PON networks here is not allowed at all !!

Quote from: chemlud on February 20, 2026, 09:16:36 AMXGS-PON? GPON OLT? What are you talking about!?!?
OLT = The hardware your ISP uses to connect you via XGS-PON Glassfiber.
ONT = The hardware you use at home to connect to that OLT ;)

Quote from: Patrick M. Hausen on February 20, 2026, 09:39:46 AMI am already using old telephone wires.
Use any old "shoe laces" (ok, copper wires) you might have in your wall, already.

When we moved into this appartment 25 years ago there were phone outlets in every room.
I replaced all TAE (German phone) outlets with RJ45.

You could use any old phone wiring you might have in place and get Gigabit speed.
+1 here :)

I discovered that I could disconnect the phone cabling splitter from the main phone line and then had high end and thus very useable CAT5e wiring through the house!

Each phone outlet was removed and replaced with an UniFi In Wall accesspoint and an additional 8-port Switch attached to the PoE Out port :)
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Quote from: nero355 on February 20, 2026, 02:30:51 PMI discovered that I could disconnect the phone cabling splitter from the main phone line and then had high end and thus very useable CAT5e wiring through the house!

Oh, that's a nice find. Here it's definitely phone cable. The connections now go up to 100 Mbit/s but not higher, although all 8 wires are connected.

There's a central box in the wall where all those TAE outlets run to. Inside was a rat's nest. A put everything on LSA+ and documented what leads where. Then drilled through the wall and mounted a patch panel in the adjacent room which happens to be my study.
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

At the entry point of the old copper telephone into the house there is no TAE whatsoever, just a grey box with a thick black cable (comming in from DT) and a thin copper entering the house. How would one connect the modem for the ONT (RJ45) to this DT "Wallbox" for old copper line? Handmade TAE?

But I want the old copper line to be functional for my DSL!
kind regards
chemlud
____
"The price of reliability is the pursuit of the utmost simplicity."
C.A.R. Hoare

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A router is not a switch - A router is not a switch - A router is not a switch - A rou....

February 20, 2026, 05:02:18 PM #25 Last Edit: February 20, 2026, 05:08:26 PM by Patrick M. Hausen
Open the box and find an unused pair that leads to the same destination as the one used for your DSL line. It's your house if I got that correctly so you can do whatever you want. Even if there is a postal symbol on the box 🙂

If it's LSA inside you can buy or borrow the matching tool and connect a pair of wires leading out of the box and connect them to one of these Gigacopper modems. If it's even older the connections possibly use screws.

To identify wires there are tools, too, like these two in combination:

https://www.secomp.de/de/item/softing-cablemaster-210-durchgangs-und-verdrahtungstester/24010140
https://www.secomp.de/de/item/softing-cableprobe-cp15-ton-ortungsempfanger/24010070

You hook up the first one to an unused (TAE or other) outlet, then use the pointy thing to search for the pair inside the box via the very audible signal.

P.S. One's got to love the product photos of the pointy probe. Because of course you would hold it to a switch port 😂
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

February 20, 2026, 05:40:53 PM #26 Last Edit: February 20, 2026, 05:45:27 PM by chemlud
I think the cabling in the house is only 2x 2 cables (two different phone numbers, different DT accounts), but you expect there to be 8 cables inside?

There is no lead seal or somthing for this DT cable box? The coax cable guys show up every few years to check the lead seal for there connection point inside the house (located directly besides the old DT cable box, but zero coax cabeling inside the house...).

Don't want to break the grey, ancient plastic housing of the DT cable box...
kind regards
chemlud
____
"The price of reliability is the pursuit of the utmost simplicity."
C.A.R. Hoare

felix eichhorns premium katzenfutter mit der extraportion energie

A router is not a switch - A router is not a switch - A router is not a switch - A rou....

February 20, 2026, 05:47:25 PM #27 Last Edit: February 20, 2026, 07:52:31 PM by Patrick M. Hausen
No seal, since Deutsche Post became Deutsche Telekom - your property, your cabling. Their domain ends where the cable enters the house.

I do not expect anything - you need 2 (two!) wires from where the fibre enters the house and the ONT is placed to wherever you want your OPNsense to be. Two of those Gigacopper boxes, 2 wires, done. Open the box and find two spare wires in the best case 🙂


BTW: shouldn't we have a moderator move this thread to the international forum? This is the German language section, not the German location section.
Deciso DEC750
People who think they know everything are a great annoyance to those of us who do. (Isaac Asimov)

no, it's International -> General Discussion, at least at my end... :-D
kind regards
chemlud
____
"The price of reliability is the pursuit of the utmost simplicity."
C.A.R. Hoare

felix eichhorns premium katzenfutter mit der extraportion energie

A router is not a switch - A router is not a switch - A router is not a switch - A rou....