on 27-01-2016 12:21 PM
I've been having a problem sorting out a line issue at my mother's place. She has a 1Mb line, and is using an ASUS DSL-N10 with latest firmware.
The line stats look like this
Update Counter : 14650 Modulation : G.Dmt Annex Mode : Annex A/L Line State : up Lan Tx : 1289743 Lan Rx : 1185618 ADSL Tx : 84368 ADSL Rx : 81422 CRC Down : 26281 CRC Up : 0 FEC Down : 0 FEC Up : 0 HEC Down : 0 HEC Up : 28256 SNR Up : 7.0 SNR Down : 32.0 Line Attenuation Up : 31.5 Line Attenuation Down : 40.5 Data Rate Up : 192 Data Rate Down : 1280
Now, the upstream SNR looks quite low to me, but as I understand it, 7.0 should be just barely enough for a functioning 1Mb line.
I have done the usual cleaning of contacts, moving all electric appliances away from the copper line, etc and the line is basically unusable. Sometimes, during the early hours of the morning, it works, but during the day, I can't even browse the web. Any ideas on what might be the issue?
I've asked her to get Telkom out multiple times, but since I'm not here when they are, she's not entirely sure how to explain the issue to the tech, so he probably checks for sync and assumes the line is ok.
on 27-01-2016 08:05 PM
The only thing that looks weird is the CRC down counter. That would be cylinder redundancy checks and basically indicates errors on the line. I would ask whether they can recreate the ports for you.... not sure what else would cause that amount of errors... the SNR is good above 6. I have a line that is even below 6 continues to function ok.
on 31-01-2016 08:23 AM
Good morning. May I ask a question please. I have a similar problem in that sync looks ok yet signal drops. May I ask what test do you run to get the results you posted above? I also have a 4Mb line yet running the Telkom speed test I get 2 mb download and 0.47 mb upload with a 87ms ping.
I would sit right next to the router and get dropped signals. I have a DLink router.
Any other advice or "training a dummy" info is appreciated.