Seems coherent indeed.

So I’ll test with the IB and see what happens.

Is there a possibility that the more people of a village are coming to Swisscom DSL (for example after a bad ISP, let’s call it Moonshine, acquired a random cable company), the less might be the bandwidth to guarantee a certain level of quality for everyone? I’m just looking for some rational explanation of this “downgrade”.

I love Zyxel products they are great.

20 mbits is a lot of a difference for me.

If putting back the IB I get 90 mbits download again, I might consider it

I don’t think there’s been any foul play by Swisscom or intentional throttling. Maybe there’s been some “rewiring” that caused the degradation.

Otherwise, you’re within service parameters.

Just tested with IB3 => 64 / 17mbps, back to the Draytek => 70/ 19 mbps

A few weeks ago it was 90 / 25

That is more than a 20% service decrease, and support cannot help…

This is really concerning to me as Swisscom is the only allegedly reliable provider in my area.

At what % decrease would support react or a qualified technician investigate? Any SLA?

With IB3 plugged-in you can try to call support and ask them to investigate.

It might go back to what it was on it’s own, without doing anything.

It clearly seems to be a line or an analog issue, things like attenuation etc, losing time with scripted rookie bot-like people pushing buttons will not help, 1 time out of 10 you are connected with a knowledgeable and nice person. High quality of service of this company is definitely a thing of the past, and the price asked regarding the service quality is an absolute shame is not anymore worth it. Thank you anyway for your guidance.

This is the thing with DSL/analog technology. I wouldn’t just blame Swisscom for that. Just hope you can migrate to fiber soon.

You can also explore deploying a booster. Inquire with the support about this.

Yes I already have an “emergency” failover LTE card with a multi-device SIM on the pfsense box, works very well but unfortunately it tops up to 20mbits compared to the 150mbps available in my area because of the old modulation schemes of freebsd for LTE modems, which is my fault but just wanted to try it out. I plan to deploy a Zyxel LTE bridge, I think this will help. The Internet booster “boosts” the connection/bandwidth but does not provide failover right?

It does provide failover, but you’ll be forced to use double NATing with IB3 and pfSense.

You could also consider Mikrotik LTE/5G gateways. Zyxel is also fine.

@Thisisit42

Could you provide us with a screenshot of the diagnostics section in expert mode? We only need a screenshot of the transmission speed measurements up to the CRC errors.

Doremi

    If SNR and line attenuation are good, this is something Swisscom changed, this cannot have happened by magic? As a precision this was has occured before the events of Apples outage when important storms striked.

    Okay fair enough, value given by the checker matches and even is a bit less than what I have, Still this is frustrating to have a solid consistent +20% during many months and anxiogenous but I get the point. Also I had the FTTH before so it’s quite hard, but you can’t always get what you want.