Waiting for IP Profile and default noise margin to reset.

I have had a stable line with a speedtouch router for several years, syncing between 4500 and 5000kbps A couple of months ago I changed to a Netgear DGN2000 and sync went up to around 52000kbps and an IP Profile of 4500kbps.

However on Friday evening, everything was awfully slow. The router was in sync at 160kbps with a noise margin of 31.5dB.

A reboot gave a sync of about 3200kbps with noise margin of 12dB, but with an IP Profile of 135kbps. The sync has again been stable for 24hrs, but the IP Profile has remained at 135kbps. Kitz excellent site says with a change of sync of over 250% it should reset in 4hrs, but after 28 hrs no sign of change.

Realistically how long do I have to wait for the IP Profile and default SNR to reset? I suspect that I will be calling support on Monday.

I am also somewhat miffed by the BT speedtester, in that when there is a speed problem it reduces the acceptable speed down to your current speed!

Download speedachieved during the test was - 105 Kbps
For your connection, the acceptable range of speeds is 50-250 Kbps.
Additional Information:
Your DSL Connection Rate :3520 Kbps(DOWN-STREAM), 448 Kbps(UP-STREAM)
IP Profile for your line is - 135 Kbps

Tim

Providing there are no issues with your line I would have expected the IP profile to have increased within 12 - 24 hours, unfortunately the default noise margin of 6dB could take up to 3 weeks to appear automatically from the current 12dB setting.

Thanks for the response, I think your suspision about my line was correct.

This morning I found that I was in sync at 488kbps at 31.3dB.

I have setup routerstats and here is a graph of the noise margin

The major spike caused a re-sync and the stats since then 1hr 24mins are:-

What is the significance of RS Un-Corrected and the difference to CRC errors?

Noise Margin: 15.0 dB
Connection Rate: 3040 Kbps
Line Attenuation: 51.0 dB
Power: 19.3 dBm
Max Rate: 3424 Kbps

SuperFrames: 298834
SF (CRC) Errors: 1469
Reed Solomon: 10160368
RS Corrected: 79873
RS Un-Corrected: 16707
HEC: 1288
Errored Seconds: 567
Severe ES: 91

Interleave Depth: 16
Bitswaps: 0

So it looks line a line or interference problem.

I will try going back to my old router.

I don't know if it a co-incidence but one of those active 30mph speed signs was installed outside our house this week.

Tim

Have a look at Kitz's explanation of line errors.

This morning at 10:00 I sent a fairly long and detailed email to support. But I have not heard a word from them either by email or phone. Not even an automated response.

As for my line, for the past 24hrs the noise margin has been constant at 15dB without any Rx CRC errors. But each incoming phone call generates 6-8 Tx CRC errors.

Looking at the 500yds of overhead cabling between me and the cabinet I see that there are three trees rubbing against the multicored cable feeding the 20 odd houses. I wonder if one of these has rubbed through the insulation.

Tim

This morning at 10:00 I sent a fairly long and detailed email to support. But I have not heard a word from them either by email or phone. Not even an automated response.

I thought CS from IDNet was vg, maybe a phone call is needed to get the ball rolling?

Looking at the 500yds of overhead cabling between me and the cabinet I see that there are three trees rubbing against the multicored cable feeding the 20 odd houses. I wonder if one of these has rubbed through the insulation.

That's hard to say without getting a pair of binoculars and trying to see if the insulation has been damaged.

I contacted Openreach quite a few months ago regarding roadside tree branches and the overhead cable coming together with the possibility of damage and within 10 working days an Openreach squad was out cutting down the offending branches.

About 3 years ago I commented on here about a minor speed issue, and within a few hours I had a call from Simon following it up! I still don't know how he tracked my comments here to my account. Unfortunately I think those days are long gone with IDNet.

First thing tomorrow I will send them an updating email and follow it up with a phone call.

As for the trees I don't think anything but a close inspection would definitely tell, but one of them did look as if it was "stretching" the cable. Even if it is not currently damaged it will be within a couple of years.

Tim.

In reply to a post by TimJ:

About 3 years ago I commented on here about a minor speed issue, and within a few hours I had a call from Simon following it up! I still don't know how he tracked my comments here to my account. Unfortunately I think those days are long gone with IDNet.

Unfortunately, I have to agree. Support is not as good as it used to be.

In reply to a post by Andrew_W:

Unfortunately, I have to agree. Support is not as good as it used to be.

Given the reputation iDNet has gained, possibly the increase in customer numbers has outstripped support's ability to cope as quickly as they used to. As BTs aging infrastructure continues to deteriorate, the question of support levels will become an increasing problem for all BT resellers, since BTs infrastructure is where a lot of the problems originate.

From some of the posts on the Zen forum recently it looks as though they may be experiencing similar problems, even though they're a far larger outfit than iDNet.

Fair comment. Fortunately I rarely have to contact support.