You've certainly got high levels of interleaving, both down and up, but I wouldn't have thought it could halve your speed.

Unfortunately I'm not very good at interpreting the stats.

It would be best to download this monitoring program and run it 24 hours a day and see what graphs it produces, then upload them somewhere so others can take a look.

http://forums.thinkbroadband.com/fibre/f/4255736-hg6...

http://www.freewarefiles.com/HG612-Modem-Stats_progr...

If you're not running windows then I think there may other programs for Linux, not sure about Apple though.

Doesn't a drop in speed that large also constitute a fault?

Probably a red herring but have you been doing much torrenting lately? Reason I ask is that I'm on a 40/2 product which is normally stable at 38meg but a couple of times this year after a very heavy P2P session my speed fell with a firm ceiling at 24meg and remained stuck in that band for weeks. I never got to the bottom of it (don't do enough torrenting to test the theory) the two things are probably unconnected, but thought I'd mention it

http://www.thinkbroadband.com/ping/share/f32c7e10872...
Looking at my BQM graph there's definitely something strange going on. I have never had average latency as high as that when I've ever ran a BQM before.

Think it might be time to try and raise a fault with BT, any tips on suffering that

BT wont care about the latency, to them a high interleaving depth is not a fault in itself.

However if the speed drop is recent, judging by your attainable speed its quite possible you have hit openreach's 25% lost speed in 14 days rule which should at least merit a engineer visit.

Just wondering if anyone can take a look at these graphs. Try as I might to understand I don't really know what I'm looking for

https://www.dropbox.com/s/uiyf2a93mmw3vfm/line_stats...

Your Hlog graph exhibits classic symptoms (a 'V' shape) of a bridged tap or star wiring that is probably affecting your sync speed in a big way when compared against Attainable Rate AKA Max :

Your QLN graph suggests that you don't have the quietest of connections, the closer to -140 dBm, the quieter the line.

Your very high Interleaving depths of 1963 / 490 are another symptom.

Your high SNRM margins suggest that your connection SHOULD be capable of a lot closer to 80 / 20 sync speeds.



There's every possibility/probability that the bridged tap/star wiring is somewhere within your property.

Curing that may well cure everything else.

Edited by deleted (Thu 22-Aug-13 17:38:51)