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Chrysalis · 01-10-2012, 15:30

you also need to be lucky on noise interference etc. as well.

Me and my friend both had equal attenuation and also almost equal attainable sync rates.

There was 2 key differences tho.

His line was underground right up to the property, mine was overhead on pole.
I am in a dense city area, he was in a business park in the middle of nowhere.

His line performed consistently had little crc errors, drops etc. and ran fine on a low SNRM on fast path, it also had less fluctuation during the night.

Mine had noise bursts during office hours, lost a lot of SNR at night making it require extra SNR or interleaving for stability or even both. I could keep it on fast path with SRA. Also even when things seemed healthy SNR wise, I had a constant flow of CRC errors 24/7. Through experimentation when I had full control of SNRM on my router the crc errors only stopped with a 24db SNRM. Even then they didnt completely stopped but were comparable to others with a 6db SNRM.

So even when I get FTTC I may still get issues.

01-10-2012, 15:30	#35
Chrysalis Inactive Join Date: Sep 2003 Posts: 12,047	Re: Area ready for 120mbit? you also need to be lucky on noise interference etc. as well. Me and my friend both had equal attenuation and also almost equal attainable sync rates. There was 2 key differences tho. His line was underground right up to the property, mine was overhead on pole. I am in a dense city area, he was in a business park in the middle of nowhere. His line performed consistently had little crc errors, drops etc. and ran fine on a low SNRM on fast path, it also had less fluctuation during the night. Mine had noise bursts during office hours, lost a lot of SNR at night making it require extra SNR or interleaving for stability or even both. I could keep it on fast path with SRA. Also even when things seemed healthy SNR wise, I had a constant flow of CRC errors 24/7. Through experimentation when I had full control of SNRM on my router the crc errors only stopped with a 24db SNRM. Even then they didnt completely stopped but were comparable to others with a 6db SNRM. So even when I get FTTC I may still get issues.