Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Alex Atkin UK]

That does not surprise me, DLM has always seemed to be a bit aggressive.

When I was on ADSL with PlusNet the DLM used to clobber me to around 3.5Mbit, when I moved to Be I could squeeze out 5.5Mbit with only a few times per year where something seemed to happen to cause instability.  On Origin I get 100/33 yet I would not be surprised if once migrated over to the BT cabinet (currently on Digital Region) I do not end up with a constant 80/20 thanks to DLM.

I'm just hoping they do a promotion on FTTP at some point so I can get away from using copper wiring at all with its related quirks.

[tommy45]

Well the copper cables were installed with only telephony use in mind, running  ASDL over the copper was optimistic, and now VDSL, little wonder crosstalk is a big problem, not that it's anything new though,

[shirts]

Have followed the instructions on this thread and I'm well pleased. Many thanks to the more informed on here.......

Am I correct in believing that the enclosed bitloading graph is exactly as it should be ?

[roseway]

You've only shown a part of the tone range, but what's there looks just about perfect.

[shirts]

Thankyou kindly Roseway.......I'm still learning.......

[shirts]

I'll try again........

[burakkucat]

Yes, that is looking good. 

[adslmax]

why is HG612 always showed 79887K and get BT IP of 77.42Mb? If it was 79999K then the BT IP would get 77.44Mb?

[Alex Atkin UK]

why is HG612 always showed 79887K and get BT IP of 77.42Mb? If it was 79999K then the BT IP would get 77.44Mb?

Don't read too much into it.  There are many different ways your line speed can be reported by the modem and none of them tell the story of your actual attainable speed.

When I upgraded my HG612 from the original hacked firmware I lost 16 bits off my sync speed, but real world performance got much better.

[sidvandegraaf]

Have been on BT FTTC for a couple of months now, and monitoring my HG612 for the last 5 weeks or so. Attached is my SNR - upstream (green) seems to be gradually falling - it started at 15dB and is now at 12.6dB - there have been quite a few reboots of the modem, but the graph looks to have a definite trend. Any thoughts?

Thanks.

[Alex Atkin UK]

Its perfectly normal for the SNR to vary by 3-6dB, especially as the temperature changes.  As long as its above 6dB its unlikely to cause any problems.

[sidvandegraaf]

Its perfectly normal for the SNR to vary by 3-6dB, especially as the temperature changes.  As long as its above 6dB its unlikely to cause any problems.

D'oh! Hadn't even thought of the warm weather contributing! Was on a long ADSL line before the fibre arrived, and weather had a big effect on that so it should have occurred to me.

Thanks.

[Alex Atkin UK]

It can be so unpredictable, I got tripped up with a customer when I worked at PlusNet because I said the connection is WORSE in winter due to the temperature. (oops)  Basic physics goes out of your head when taking call after call. 

What I meant of course is that on an imperfect line winter can make things even worse if water gets into the joints on the line.  Of course at that point the customer thought I was making excuses.  Its probably for the best I didn't stay long, lol.

Keeping this on topic, I have found that on my short line the difference between summer/winter is about 10Mbit downstream and a couple of Megabits upstream.  On BT that is moot though as my sync is well above what they currently offer summer or winter.

[NewtronStar]

Its perfectly normal for the SNR to vary by 3-6dB, especially as the temperature changes.  As long as its above 6dB its unlikely to cause any problems.

It depends if your on ADSL2 and your ISP has a set the target SNRM to 3dB then it's fine.
But if your on VDSL2 then theres is only one target SNRM and thats 6dB, I am on VDSL2 if my SNRM go's below 4.5dB i'll get a dissconection and re-sync at a much lower DS & US rate untill the line has become stable again.

[Alex Atkin UK]

Incidentally, does anyone have the fixes for the graph scripts for the new firmware?  My graphs have been broken since the upgrade and I can't get my head around fixing it.