Problems with Telekom. Crossed cable?

This simply means that your KVZ (cable distribution box - small gray box on the street) is not directly connected to an MSAN (DSL server - large gray box with ventilation slots on the lid), but that a copper cable was laid between an existing MSAN and the KVZ to which the area is connected, or an existing cross-connection was used. When that is full, it’s a problem because there are only 3 options: civil engineering work (which would not be done for just one connection), Telekom installs an MSAN over your KVZ (which won’t be done due to the proximity to the other MSAN), or a neighbor moves out and cancels their internet (have you ever thought about the neighborhood being inundated with folk music?!).

Your internet would then run several kilometers from the KVZ to the exchange, hence the 6 Mbit due to the high line attenuation.
Your neighbors' signal takes a shortcut at the KVZ with a few meters to an MSAN located somewhere nearby.

The KVZ is about 10 meters from my front door.
From your text, I understand that I should reboot the KVZ with my car at exactly 31.6 km/h.

I don't want to pay for 16000 and only get 6000. Maybe I'm being stubborn. With 6 Mbit you really don't get far. I don't understand why I only have this problem here.

The specifications are always "up to". So you pay for "up to 16000kbit/s," since that is the smallest commercially defined size. You don't need to be stubborn about that. Besides, it is impractical, because otherwise you would have nothing for a few supposedly too many euros per month. Such problems are not easy to understand; the internet service, which in Germany is mostly based on old copper cable networks in the local supply area, is quite complex. Besides the technical equipment, there are a few decisive physical factors. Two of these are particularly challenging: 1.: Line length - DSL is based on an analog technology. It is susceptible to cable attenuation. Attenuation increases both with the line length and with the signal frequency. The signal frequency is directly related to the data throughput. Therefore: long line = lower data throughput. The Telekom employee's hint "cross-connection" suggests a long line. 2.: Electromagnetic radiation - When our telephone network was buried, 2 unshielded wires were enough for voice connections; it was rare to experience the phenomenon that suddenly another call was on the line, and if that happened, you had something to talk about. With the increasing signal frequency on the lines, crosstalk increased, and care was taken not to use adjacent lines for high-frequency services. Therefore, today only some of the copper wires are usable for DSL. It is quite complex to specify this in the documentation. It may therefore be that simply no other suitable line is available anymore. Take the 6000 (which can sometimes be more, sometimes less) and discuss the house connection technology with 3rd level support (politely work your way through); sometimes they have solutions. For us, it took over a year after registration, and the first 2 months after moving in, we had an internet connection via mobile communications, which was just enough for emails without images. For that, construction measures were carried out through head holes at country roads, district roads, and village streets, and now we get almost 100 Mbit/s, which is sufficient for us. That also cost 800€ - it is a mixed calculation.

and if you book a higher tariff do you get higher faster volume?

No commercial solution helps with a technical problem. You also don’t get more kilometers from a tank of fuel if you pay double for the gasoline.

This is really very crazy: at the TE in house no. 9 there are 6 Mbit, next door in house no. 11 there are 250, next door in house no. 7 nothing works at all and in house no. 1 there are 175. If there is supposed to be some logic in that, I am too stupid :-(

I’ll write to you during the morning.

I just saw it and already replied ;-)

The logic inherent in it stems from the reality of an outdated system that was never intended for high-bitrate data transmission. People always think "it's still working" and do not renew it completely - which, by the way, would be very expensive for network operators but economically worthwhile on a national scale. It is simply not always advantageous when infrastructure is considered from a business management perspective. We have the same misjudgment in other infrastructure areas such as health, energy, and public transport.

The inherent logic stems from the reality of an outdated system that was never intended for high bitrate data transmission.

No, logically it would be slower DSL at one end or the other end of the street (where it is farther from the distribution cabinet or where there were already more neighbors on the way in between). I don’t see that in this case.

People always think "it still works" and don’t renew it completely – which, by the way, would be very expensive for network operators but economically worthwhile for the country.

Economically worthwhile would have been not to have created multiple network duplications during the postal reform, which is now backfiring. Unfortunately, politicians don’t understand the difference between competition and cacophony. With ONE telecom (in the form of a national and competitor-owned DBP Fernmeldedienst Private Edition), we would already have basic coverage at the level of fiber to the milking machine. That was not desired, and now we have a mess.

As information for the readers here: I spoke with on the phone and we discussed everything.

This is really very crazy: at the OP in house no. 9 there are 6 Mbit, next door in house no. 11 it’s 250, next door in house no. 7 there is nothing at all and in house no. 1 it’s 175.

Since you mentioned these other house numbers, I took a look. Your statements are indeed correct, but all of this is explainable. However, for data protection reasons, I will not do this publicly here.

Regards, Kai M.