You are still set at heavy DLM intervention, unchanged from before.

The main input from DLM is seen as INP=8 and delay=16.
The result from the modem shows with FEC overhead of (R=16/N=64), or 25%.

Is this still needed?

The use of FEC is detecting a lot of errors (FEC=9,195,648 over the 8 days), and is correcting the vast majority of them (CRC=2,902 in the same period).

With that level of errors, I would guess that FEC/interleaving is very much needed on your line. It could be true that the settings could be relaxed somewhat, but we (as mere Joe Public) know little about the settings that DLM follows to decide on that.

When I had DLM intervene after a line fault, it took 3 weeks for it to de-intervene. You might need more patience.

You have had intervention from DLM too, but at the "normal" level of INP=3 and delay=8.

Your modem has responded with a FEC overhead of (R=12/N=64), or 18%, so is having less effect than adrian109's.

Your modem is seeing FEC errors (174,000 in 75 minutes) and correcting them.

Comparing the rate of FEC errors between you and @adrian106: you are getting around 38 errors per second, while @adrian106 is getting around 13 errors per second.

Your FEC errors are mostly corrected, but resulted in CRC errors 281 times at a ratio of 630:1. @adrian106 had a ratio of 3200:1.

You are getting more FEC errors per second, but the current FEC settings are letting more become CRC errors per second too.

That suggests that you certainly need FEC/interleaving turned on, and that perhaps your settings need to be made more stringent, or perhaps that @adrian106's can be relaxed.

Hi,

Thanks for comparison, if I should make my settings more stringent please could you point me to which ones?

The four I mentioned are the ones to watch: INP, delay, R and N.

Thanks, I will keep an eye on it.

Why does the DLM decide to turn FEC and interleaving on? I am assuming its to do with telephone wiring but could it also be a power supply like the one fro my HG612 and HG533? As they both are the same power supply and if put an AM radio at the frequency MrSaffron said and it picks up some interference.

It decides on the basis of error counts.

I see, do the errors appear due to interference?

Yes, they can.

Ok thanks, Like I said on an earlier post I think it might be my router and modem AC adaptors. As they seem to put out a lot of noise when using a AM radio to test. I think I will try different adaptors and see how much noise they put out before I switch them.