Deutsche Telekom is throttling the internet

321–322 of 322 posts

Re: Deutsche Telekom is throttling the internet

#321

Post by LargoLasskhyfv » Fri, Jan 30, 2026, 1:35 AM UTC

perching_aix wrote: post #138

juliangmp wrote: post #93

Earlier quoted context omitted.

> The most concerning limitation in the German market is the unavailability of native Glass Fiber modems, that can accept as input a Glass Fiber connection: at the moment, providers install their own Glass Fiber modem. Im actually quite okay with that. Why should I have to pay for specialized hardware that won't be usable if I move and the new apartment uses DSL or docsis. Give me an rj45 (or sfp for some fiber conne…

You say "why should I have to pay", but they really haven't said or suggested anything about how they'd rather you paid for anything. They're talking about having an option to supply one's own device, not about requiring so. The common rationale behind this I'm aware of is that an ONT device is technically a computer with persistence, hosting arbitrary code and data that you cannot (or at least not supposed to) audit…

There are other ONs, doing away with the sharedness of the GP. Giving you an exclusive ptp 'BIDI-link' into the ISPs next switch.

https://duckduckgo.com/?q=bidi+sfp looking like this:

https://www.fs.com/de/products/39196.html fitting to this interface specification from the ISP:

https://www.wilhelm-tel.de/schnittstellenbeschreibung which is AON also known as 1000BASEBX20-U.

Just have to watch out for the right wavelengths/colors for TX/RX(transmit/recieve/upstream/downstream)

Re: Deutsche Telekom is throttling the internet

#322

Post by LargoLasskhyfv » Fri, Jan 30, 2026, 2:30 AM UTC

zhouzhao wrote: post #89

haunter wrote: post #11

Not sure it’s the same issue but in Hungary they (DT) refuse to use/pay Cloudflare so in peak hours every single site outside the country loads incredibly slow because of the constant re-routing. Everything has to go through Frankfurt even though CF would have alternate direct routes https://kozosseg.telekom.hu/topic/40322-cloudflare-magyar-te... https://old.reddit.com/r/programmingHungary/comments/1ngv2pt... https:/…

It's similar. The DT is not doing cost neutral peeing with Cloudflare. Also the DT has no (or only one 10G NIC) at the DE-CIX. I pay 80 EUR for 1Gbps/300mbps and it's behind GPON or if you can get more XGS-PON. Not even real ethernet. It's a shame.

> Also the DT has no (or only one 10G NIC) at the DE-CIX.

Why would they? There is this thing called https://en.wikipedia.org/wiki/Dagger_Complex

not that far away from the former https://de.wikipedia.org/wiki/Fernmeldetechnisches_Zentralam... , something like HQ of the former Gov-telco. While those have been torn down, or brought to other uses meanwhile, the Deutsche Telekom has still a massive presence in Karlsruhe. Still not that far away from the Dagger Complex.

Get what I mean?

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