Deutsche Telekom - Glasferausbau

[chemlud]

Hi!

Have here a salesman stalking me with Telekom digging our street and placing fiber. Connection to the building is free only for the inital digging, if I book a fibre later, I would have to pay for connecting house with the fibre in the street (estimated cost some 800.- € I guess).

Question to me (besides no real use case for GBit and 150 MBit same monthly rate as for DSL with 150 MBit) is, as we have in this one-family-house two separate telephone numbers (different owners, but only one cable comming in, built in the early 1970ies), one analog, one DSL (both run by Deutsche Telekom):

- Is it possible to keep the DSL line (150MBit) and order fiber only for the analog phone number? Or will Deutsche Telkom kill off the old cable DSL when a fibre is installed?

Moreover:

- Have no experience with Deutsche Telekom fiber, will it be ipv6?

- What kind of termination for the fiber is usual? Do I need a modem, if I don't want to rent any Deutsche Telekom hardware at funny monthly rates?

Any experience with Deutsche Telekom on that?

[Patrick M. Hausen]

Telekom regularly delivers a single public IPv4 address and a /56 for IPv6. Both dynamic for consumers, fixed when you have a business contract.

You need an ONT ("fibre modem") which they will happily sell you for a reasonable one time fee, no recurring extra cost. I recommend getting it from them. Saves debates if the connection isn't working from the start. Also their technician will connect and activate it, if you bought theirs.

You can of course buy a new contract and keep your DSL line active, but why would you? iIf you "upgrade" your DSL line to fibre at least in our case you do not even need to configure new credentials. When the ONT is activated, the DSL line will go down, you switch your WAN interface from DSL modem to ONT, instant connection. PPPoE etc. all stays the same.

I had to add VLAN 7 in OPNsense, because with DSL I have the modems do that, but that was all.

[chemlud]

I want to keep the old DSL as I never do such a switch without redundancy. I prefer to pay for two lines and have at least one online ;-)

Worst case: Pay for two line and have zero online.

Especially if you travel a lot and loose your tunnels due to switching from DSL to fiber...

[Patrick M. Hausen]

In that case - buy ONT from Telekom, get new PPPoE credentials, configure as usual.

[Maurice]

You can keep using the existing phone line / DSL, these won't get shut down anytime soon.

Deutsche Telekom sells two types of basic ONTs for about the same price: The "Glasfaser-Modem 2" with a 2.5 Gig Ethernet port and an SFP module named "Glasfasermodem Digitalisierungsbox" (actually a Zyxel PMG3000-D20B). Both are known to work just fine. There are some reports about compatibility issues with the SFP in certain NICs, but it works fine for me in a MikroTik device.

I'd highly recommend getting your home connected. Even if you don't currently need the speed, it's more reliable than DSL, upload speed is 50% of download, power consumption is lower. And if the fiber itself is from Deutsche Telekom, you can typically get contracts from Vodafone, o2, 1&1 etc., too. Just like with DSL.

Cheers
Maurice

[chemlud]

Ok, if I buy a fiber plan for lets say 2-3 years, I pay for 150 Mbit arround 42.- Euros, plus ONT (X euro), plus some "set-up fees" maybe?

In the end I have the ONT in the basement, what next? Need some fiber inside the house for connecting ONT with sense, which is not trivial, as there are SOME rooms in between, so to say the complete opposite corner of the house. I can't install fiber myself throughout the house, right?
What would be the costs for cabeling inside the house?

[meyergru]

No. Not at all.

1. The ONT is normally provided at no cost from the provider. Unlike with DSL modems, ISPs actually want you to use their equipment, because they say that it makes their infrastructure more stable. Know that you still share an OLT port with other customers.

2. The fibre cabling ends at the ONT. So it is your choice on where you locate it (provided that you actually get FTTH, not FTTB, where this is a whole different story). From there, you need ethernet cabling to the WAN port of your router. The provider does not care about the in-house cabling with FTTH, that is your problem. Usually, the fibre ends somewhere in your basement with the ONT directly connected via a short fiber stretch near it. Thus, it is your choice: If you have existing ethernet cabling that leads to the ONT, then you use it. If not, you can either install ethernet abling or install a longer fibre cable (which is really cheap) from the box to your ONT (which you place with your router).

There are multiple options available, for GPON and XGS-PON, this will always be single-mode fibre, usually with SC/APC or LC/APC ends, depending on sockets. Huawei has an interesting option for single-mode cables that you can glue to the wall and that are pratically invisible (you can actually put paint on those):

https://www.youtube.com/watch?v=ls26PPutDMc

Those were developed for FTTR, but can also be used for this purpose.

[Maurice]

In single family homes, Deutsche Telekom by default installs the optical outlet ("Glasfaserteilnehmeranschlussdose" in prototypical Telekom speech) in the basement - for free.

If you want it elsewhere in the house, you can prepare a conduit yourself and they will use it to run up to 20 meters of fiber inside the house (also for free).

If you decide to have the optical outlet in the basement, you can then either run your own fiber from there to wherever your network gear is and place the ONT there, or you can place the ONT in the basement and run twisted pair from there to your router.

Cheers
Maurice

[Maurice]

@meyergru Deutsche Telekom does not give you a free ONT. You have to buy or rent one.

[meyergru]

Really? Interesting. Both M-Net and Deutsche Glasfaser give you one. Either way, they are dirt cheap (30-50€). I just bought an LXT-010H-D from wisp.pl and that also has 2.5 Gbps.

[chemlud]

If I buy an ONT: How much (ballpark)?

The old telephone line enters the house to the best of my knowledge in the basement, EAST side. The router would be one level up and to the very WEST. So kind of nightmarish, no matter it CAT6/7 or fiber.

Extra question: How deep does Der Gilb dig outside the house? Still 80cm something at least? No microtrenching or so?

Maybe I should ask for an ONT to be placed direct at my network-equipment, (first floor, so the fiber would be on the OUTSIDE of the house, before entering through the wall? Sounds crazy...)

[meyergru]

You should talk to them directly, but I would think they want it covered, because when that breaks outside your house for whatever reason (e.g. vandalism), it is their obligation to fix it.

The ballpark for such things is 30-50€, as I already wrote. The Leox LXT-010H-D should work for Telekom, because they use VLANs (I still was unable to get it to work for DG). It costs ~31€. The Telekom Glasfaser Modem 2b is ~40€ and that should work with Telekom for sure...

[Patrick M. Hausen]

https://shop.telekom.de/geraete/telekom-glasfaser-modem-2-schwarz

[meyergru]

https://www.amazon.de/Telekom-Glasfaser-Schwarz-Ethernet-Anschluss/dp/B0FJ8CCY1L

https://www.playox.de/telekom-glasfaser-modem-2b-lan-port-lc-anschluss-2-gbit/s-bandbreite-schwarz-40824527-n2008265932