Errors

Just interested to understand what might be going on with my (notA!!) VDSL2 (FTTC) connection (ISP IDNet but it's nothing to do with their network).

For the last couple of months (i.e. winter, but it's "dry" Essex) my connection has 48 hour periods when latency minimum doubles, and uncorrected errors run at 1000-3000 ph and there's up to 10% packet loss; then it all returns to normal for the next 48 hours or so, with no recorded errors, well less than 10 ph, and no latency spikes or packet loss (well intermittently perhaps 1 or 2% possibly). During those "bad" periods there's a bit of noticeable lag, and buffering when streaming, but nothing I can't live with. Connection is fastpath, G.INP on download, and SNR stays constantly at 9 and attenuation at 25dB (not % as I said before edit. Sorry!. . It's no different whether I'm connected by wifi or cable, nor between different hardware. Nothing is any different in my house, and it's not time of day related.

I assume that DLM has tripped, although there are no disconnections, since my reported download has gone down from it's longstanding 36K to 32K, , though the attainable remains at 38K. Reported upload speeds are unaffected.

As I say it's no issue, I'm just a bit curious since it's never happened before. I assume some dodgy underground joint has got wet, though there seems to be no obvious weather connection, i.e. it goes bad after a period of dry weather and stays good in the wet usually.

IDNet's answer has always been my connection is as good as I'm going to get so live with it, which I knew already. (Modem reports me as 720m from the cab, which seems about right, and it's one of the estate underground cables which the builders just slung in the ground, but the local OR spent 10 years patching, reasonably successfully). But any ideas? As far as I can gather no-one else around has the same thing. The modem is a 5 year old Fritz!7490 but there's no evidence it's going dodgy as far as I can see.

PS just wonder if it could be a port on its way out at the cab, in which case I assume it's just a case of "wait and see" until it pops its clogs

Edited by deleted (Tue 19-Feb-19 17:00:37)

You say ADSL2+ but also talk about G>INP and distance to the cabinet, so is it ADSL2+ or VDSL2+ ?

Also attenuation is the 25% actually 25dB?

Has to be VDSL2 given the speeds mentioned.

That's the trouble with doing a quick message. Of course it's VDSL2 (FTTC) and yes 25dB attn. Reading what I want to read, as my sig. says!

Original post now corrected.

Edited by deleted (Tue 19-Feb-19 17:01:32)

Latency Up to 100+ms (and associated poor video streaming/buffering) still bouncing around all over the shop. 48+ hours normal, and OK at around 8-20ms, zero errors, before it deteriorates again for the next 48-72 hours with errors at up to 3000 ph (uncorrected). The cycle has been going on now since the beginning of the year, and no-one has any clue about why!!! I suppose I should be grateful having this unique connection, obviously! Just seems to be becoming hard to justify having a connection that performs at the level of my previous ADSL 3Mbps connection over a decade ago, and paying a VDSL price for it from IDNet who aren't the cheapest. My mistake!

Obviously ground temperatures need to warm up a bit, I surmise. This broadband lark seems to be more a lottery game of chance, less a science.

Well, update. Download speeds have recovered more towards the minimum guaranteed. And the errors/latency increases now seem to be confined to off-peak (yes off-peak), and recover during the peak 4/6pm-midnight.