Total time = 1 days 2 hours 26 min 49 sec
FEC: 6943 76
CRC: 0 5
ES: 7425 565
SES: 146 3UAS: 62 52
LOS: 1 0
LOF: 8 0
LOM: 0 0
This may be most concerning, and would probably initiate some DLM changes considering that the space of time that this would have to occur in was small since the previous 24 hours were as follows:
ES: 58 10
SES: 10 0Though, there is a concern for me in reference to the modem and the accuracy of the stats since I do not see CRCs logged (which are the cause of ES). And adding the latest 1 day and previous 1 day counters together shows mostly everything matches up bar ES rates. Maybe I'm missing something.
Anyway, the following information is based on the modem stats being accurate:
Please bear in mind that it is based on assumption, since there may be inaccuracies in the stats as mentioned.There may have been a chance that the high ES/SES rates may have coincided with thunderstorms (which, for some, can cause an increase in errors and outages due to bursts of interference). From the stats we have (which does not take into account stats we don't have if the modem was rebooted/affected before that), going on the assumption it was occuring for around 2.5 hours it implies an error rate of approx. 41 ES/min and 0.3 SES/min on the downstream, and 3.1 ES/min on the upstream (no point calculating the upstream SES; it's miniscule).
Going based on the above, your MTBE (Mean Time Between Errors) over that period of time would have been approx. 1.45 (so an error every 1.45 seconds) which, I should note, is a lot lower than the MTBE red threshold (which is 30 for the Speed DLM profile, which I believe BT employ). So, it would not be unusual for the DLM to make negative changes in this scenario. It looks like the stats have been OK since, so it should recover if the line remains stable.
You can read about the DLM and tresholds at
http://www.kitz.co.uk/adsl/DLM.htm.
Bit of an update. I left a laptop running stats overnight but it crashed!! Typically my modem resync'd again last night, but as it had crashed I had no captured stats. arrgh.
$#%! happens.
I'm down to a 56.89mb line profile now! That seems way too low for a line with 14.1 attenuation in my opinion.
Line profile or sync speed? Just to be clear. Yes, perhaps it's a bit on the lower side for 14.1 dB attenuation but taking into account crosstalk and the fact you have ECI cabinet without support for G.INP and XdB (lower SNR, as low as 3 dB) then it is sorta expected to not be any greater.
For what it's worth, I've dug out my original BT order and I was given an acceptable range of 63-80mb for my line (my guaranteed minimum was 57). So I'm now going down the route of BT Support, because I might as well have Infinity 1 with that line profile! To be fair, it's been degrading for a good while now...(hence why I came on here looking for ideas!)
Yes, I would say that with it being below that threshold you could try and go down that route. Though, I would imagine there is not much they can do. They may choose to release you from contract (if you are still in one). Though, from what I can gather, the minimum guarantee applies to sync speed and not line profile (or throughput).
I must admit, the HG612 modem seems to have made things a hell of a lot worse though. I did put the ECI back on, but it's made no difference.
HG612 modem has made things worse? Perhaps you haven't given it enough of a chance?
Perhaps the line conditions have been worse in the previous few days and have tainted your opinion of the modem?
Either way, suddenly switching the out for the ECI will not see any immediate changes anyway, since the DLM will first need to adjust the parameters through prolonged stability.