IDNetters Forums

Technical News & Discussion => IDNet Help => Topic started by: mrapoc on Oct 20, 2010, 18:22:32

Title: Crazy amounts of noise
Post by: mrapoc on Oct 20, 2010, 18:22:32
Could this only possibly be my end or would the ISP affect it also?

I am getting jumps of up to 9db and everything in between at the moment and nothing has changed my end (nothing turning on such as central heating etc.)

Title: Re: Crazy amounts of noise
Post by: Rik on Oct 20, 2010, 18:25:20
Not an ISP issue, Sam. Noise is purely between your router and the exchange.
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 20, 2010, 18:27:05
I'm going to try a different filter as this is crippling my connection. Lost half my usual sync in the space of 30 mins.

Unless its worth faceplating it? Or get a X1 thingymajig
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 20, 2010, 18:36:07
x1-fe is always worth a try, Sam, but you really need to take the router to the test socket and run it from there for a period of not less than 24 hours. If you can, borrow another router to try.
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 20, 2010, 20:08:52
Noise now at 25 is that cause i resynced lower?
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 20, 2010, 20:15:04
Sounds like you resynced in a burst of noise, Sam, which has now gone away, so the margin rises.
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 20, 2010, 20:17:48
I'll reboot later then...

Heres hoping the different filter will make a difference in the long run
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 20, 2010, 20:19:58
Leave it till the morning, Sam. Noise is worse at night, generally.
Title: Re: Crazy amounts of noise
Post by: gingerjedi on Oct 20, 2010, 21:03:48
Quote from: Rik on Oct 20, 2010, 18:36:07
x1-fe is always worth a try, Sam, but you really need to take the router to the test socket and run it from there for a period of not less than 24 hours. If you can, borrow another router to try.

I'm not convinced those ADSL nation X1-Fe filters are any good, I used them on all 3 of my routers but could always hear digital noise on the line, I never stopped to think the super duper filters I'd bought to replace the standard ones might not be up to the job.

When I got my hands on a 2-Wire router a few weeks back the extra diag pages allowed me to test a few filters and I found I was getting uncancelled echo with the X1's, I replaced them with the 2-Wire filters and the problem went away, no digital noise either.
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 20, 2010, 21:04:55
For me, they've always been superb. Comms is still a black art. ;)
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 20, 2010, 21:25:04
Ordered one.

If this doesn't sort out the noise, is there anything else to try before going back/trying the 2wire again?

I quite like my DGN2000 :(
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 20, 2010, 21:26:48
The MW radio trick, Sam, but ISTR you've done that?
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 20, 2010, 23:26:23
yeh didnt seem to yield any results - i think i did it right?

what is the correct method and is there any particular radio settings etc.
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 21, 2010, 11:07:05
It must be battery powered, Sam. Select MW, then de-tune it so all you hear is a hiss. Follow the phone wiring from entry point to router and listen for an increase in noise. If you hear one, that's part of your problem. Keep as close to the cables as possible.
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 23, 2010, 11:57:00
The filter seems to be holding it a lot closer to 10db at all times :) a stable noise is better than a low noise right?

Title: Re: Crazy amounts of noise
Post by: Rik on Oct 23, 2010, 11:57:58
It is for me, Sam, but some people prefer speed over stability.
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 23, 2010, 12:30:37
I'm synced at full 8mb anyway - atm

Sooo the lower the noise, the higher the sync but more chance of sync loss/errors?

The more erratic the noise (up and down) the more likely to lose sync and also errors?
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 23, 2010, 12:39:27
Yes, but only if you don't connect at full speed. If you do, the higher noise margin is a good thing as it gives the router more headroom. If, otoh, the noise is fluctuating wildly, then it is likely to lead to resyncs, packet loss and errors.
Title: Re: Crazy amounts of noise
Post by: mrapoc on Oct 23, 2010, 13:09:55
Excellent.

Still only 10.1 so far its only fluctuated by 0.2 
Title: Re: Crazy amounts of noise
Post by: Rik on Oct 23, 2010, 13:22:26
Perfect. ;)