Frequent breaks in the connection to the Internet, the reasons?

Question

Computer networks

Periodically (2-4 times a year for the last couple of years) there is a problem connecting to the Internet. The modem (Keenetic DSL) does not keep the connection. Provider Rostelecom, all technical support advice comes down to bonuses - reboot the modem, check the wires, replace the splitter \ wire \ modem. Technicians usually measure the line with a tester and simply by connecting the handset to it for noise, as a rule, neither step causes anything unacceptable and everything again comes down to replacing the splitter / wire / telephone socket. Often everything becomes normal in the near future (2-6 months).
This month it all started again, but the replacement does not give such lasting results. I noticed a simple pattern - it's worth making a call from the phone or receiving a call and everything works as it should from 20 minutes to several days (the duration is possibly proportional to the time of the call).
Normal operating condition of the line and modem
Noise level 32.9 / 35.5 dB
Signal strength 18.3 dBm
Signal attenuation 19.0 / 10.4 dB
before breaking the first parameter goes down sharply, and the latter, on the contrary, increases (although not necessarily, but the modem requests these parameters every 3 seconds and I can't see what's between requests).
I would like to understand what such tricks can be connected with, because I understand the principles on which telephone communication and ADSL work only superficially and I am not able to understand the issue on my own. Removing questions about the equipment, the splitter was replaced a little more than a week ago, a regular telephone wire goes from the splitter to the modem, the modem is about 2 years old, but in a month I connected 2 others (Rostelecom Huawei and d-link).

Answer 1

Not exactly a solution, but try changing the modulation. Put g.dmt, it is less "fast", but less picky about the signal level