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Query about crc and error seconds

Posts: 128
Registered: ‎12-10-2007

Query about crc and error seconds

Any one have info about what are acceptable levels of crc errors and errored seconds?
My router is currently reporting 21 CRC and 14 ES in a 4 hour period .
Is this normal for 4928 line rate with 50 dB attn (down) and 9.0 snr
The reason for my query is that I have recently changed to a new telephone and the errored seconds seem to have increased,
probably coincidence ?
Mike (edgeways)
Community Veteran
Posts: 1,412
Thanks: 4
Registered: ‎29-01-2009

Re: Query about crc and error seconds

I have an attenuation of 30.5, and I'm running at 8128 without interleaving, so error correction is turned off. This means any errors are seen as CRC, and not FEC.
I get around 10 CRC per hour, about 8 ES per hour, and no SES. This is no problem whatsoever.
If your ES has increased, but the CRC hasn't, it just means that those CRC errors are more spread out in time, where on the old line, they were a little more concentrated.
Plusnet Customer
Using FTTC since 2011. Currently on 80/20 Unlimited Fibre Extra.