line quality stats "power" in router stats, what does this mean.

[arronlowley]

as the title says what does this mean? does it have any affect on the quality of your line, mines currently at 2.1 on the downstream and 2 on the upstream

[CrimsonLiar]

I believe it's in dBm, and it's simply a measurement of power with 0dBm being equivalent to 1mW.  Because of the way the electronics in your router/modem work, that power level is a little irrelevant since in order to process the signal the modem circuitry then has to attenuate the levels.  To cut a long story short, so long as the attenuation figures are not negative, then the power level should have no effect on the quality of the line.

Even if those power levels were low (which I don't believe they are), the only possible way to improve them would be for an engineer to modify settings at the roadside OpenReach cabinet.

[arronlowley]

I was going to message you directly but seems I don’t need to now lol, thanks for the input, interleave has gone off my line now, do you know if there is an errored second allowance? Currently getting about 10 per hour.  But no ses Errors.

[CrimsonLiar]

If you think about the number of packets of data a modem transmits and receives every second, I wouldn't worry too much about 10 "errors" per hour.

On top of this are these "corrected errors"?  In other words packets that were immediately identified as having errors and then corrected on the fly?  If so, they're hardly even errors, it's more a case of too much info unsettling the user!

[arronlowley]

I checked this morning after an 11 hour period the crc errors were in the 100-150 range and the es errors were 55 on the downstream and upstream, which like you say deffo isn’t bad is it, 55 seconds out of 11 hours lol.

[CrimsonLiar]

Okay, so get ready for some rough rounding here:

If your router has an average connection then it'll handle 35,000 packets per second.  So even if those packets had required a re-transmission rather then being fixed through parity and error checking, the worst-case scenario is only around 0.01 of a second over that 11 hour period!

*If anyone fancies being totally pedantic, and calculating it to the millisecond, please feel free