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Author Topic: Attenutation  (Read 7855 times)

c6em

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Re: Attenutation
« Reply #15 on: July 31, 2012, 06:14:53 PM »

Rein is a repetitive noise impulse, such as you get with a faulty switched mode power supply, which when "on" will be affecting the ADSL signal continuously.
REIN is characteristicised by a spiky highly variable SNR margin trace.

SHINE is a single instance of noise impulse.  These will come as a sudden large burst(s) on occassions, and are more likely to totally disrupt an ADSL signal than REIN which "just" makes the ADSL worse (ie lower SNR).


Edit - this is an example of REIN recorded by me not far from my home on a frequency of 612KHz standing next door to a BT pole supplying 3 properties.....one of which is presumably the cause.
http://www.youtube.com/watch?v=426W6lDpDCU&feature=youtu.be



« Last Edit: July 31, 2012, 06:19:52 PM by c6em »
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Black Sheep

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Re: Attenutation
« Reply #16 on: July 31, 2012, 06:56:26 PM »

Gary ....... if you're using the system I think you are, then it is due to be abandoned as it's 'indicative' behaviour always points to REIN/PEIN/SHINE, when the likelihood is nearer a 2% chance of it being so.

I'm not saying it isn't in this particular case, just making you aware of that particular systems malfunction. I understand you don't want to make anybody aware of its name, so can only guess at it ?? :)
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Black Sheep

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Re: Attenutation
« Reply #17 on: July 31, 2012, 06:58:33 PM »

Whoops , forgot to add my guess ............. is it an acronym akin to this .....     _ R _ T ??
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burakkucat

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Re: Attenutation
« Reply #18 on: July 31, 2012, 08:16:42 PM »

My guess:

GROT

 :lol:
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kitz

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Re: Attenutation
« Reply #19 on: July 31, 2012, 09:05:58 PM »

SHINE = Single Isolated Impulse Noise
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Black Sheep

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Re: Attenutation
« Reply #20 on: July 31, 2012, 09:21:26 PM »

My guess:

GROT

 :lol:

Ha ha ...... the 'indicative bot' should be named that !!!!!!  :lol:
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coolsnakeman

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Re: Attenutation
« Reply #21 on: August 01, 2012, 10:41:48 AM »

Sorry BS and BK you are both wrong  :lol: The system i used to get those test results is called KBD (knowledge based diagnostics) which is run through BT wholesale. The other system i do not wish to name is the one that gave the unsual line distances results of 1.9Km for this connection when in actual fact it is over 9km long  :lol: I knew what REIN was just wasn't to sure about SHINE cause i have never come across it. I can't say for sure if KBD is giving the right results on this but i am pretty sure it is worth looking into and maybe perhaps getting a boost to call up the REIN desk and go through the usual checks. I don't even think he has had a lift and shift yet on this but again he moved from RES to BUS so he may have been put into a different port on the line card anyway.

Regards
Gary
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gouledw

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Re: Attenutation
« Reply #22 on: August 03, 2012, 03:58:19 PM »

It sounds a bit like a rocket tbh.. ;)

SHINE is where this interference is generated as a burst – when a device is powered on or off, for example. As a result disconnections or line errors may result at the time a device is switched on or off.
« Last Edit: August 03, 2012, 04:07:25 PM by gouledw »
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gouledw

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Re: Attenutation
« Reply #23 on: August 05, 2012, 07:20:43 PM »

I did a test earlier today, by basically flipping the trip switch to the whole house while keeping the HH on a power extender thingy and it didn't disconnect which makes me think it's something not to do with the house.  however when we had a heavy shower today, bingo the connection dropped out.  i don't think its helping having it on a fixed rate as error correction isn't occuring and the RS' are going into the thousands every minute.
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asbokid

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Re: Attenuation
« Reply #24 on: August 05, 2012, 11:24:42 PM »

When it's raining, maybe test the line with a Mole, Hawk, JDSU or a Canoga Perkins :-)

cheers, a
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Black Sheep

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Re: Attenutation
« Reply #25 on: August 06, 2012, 06:17:36 PM »

I did a test earlier today, by basically flipping the trip switch to the whole house while keeping the HH on a power extender thingy and it didn't disconnect which makes me think it's something not to do with the house.  however when we had a heavy shower today, bingo the connection dropped out.  i don't think its helping having it on a fixed rate as error correction isn't occuring and the RS' are going into the thousands every minute.

That doesn't make sense ?? RS is 'error correction', albeit thousands a minute being a massive problem. Also, it doesn't matter if you are on 'Fixed rate' or 'Rate adaptive', as to which particular mode the transmission is set to, i.e.: Interleaved or Fast.

I think you may have meant by having 'Interleaving' applied, it isn't showing the vast ammount of 'Errored Seconds' (CRC's to us) that would certainly be accruing. For this to happen, the circuit would need to be set at 'Fast path'. ISP's cannot 'see' RS correction with their remote testing, they can only 'see' errored seconds. So they may look at your line and view it as being ok ??
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gouledw

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Re: Attenutation
« Reply #26 on: August 06, 2012, 07:51:27 PM »

They can see the connection is dropping multiple times a day, but they don't know why, there tester doesn't pick up a problem.  Gary's dealing with it by sending out a new router just to make sure it's not a PSU fault or something like that. TBH if it is SHINE, because it is an intermittent fault, it will be very hard to pick up.  9.5km of cabling, it could be anything from a wet joint (which is what i believe it to be), to a rubbing tree branch, to a TV, radio or even microwave anywhere along the line.  and it's so flipping hard to get a specialist REIN engineer out instead of just a boost, where there test's see nothing as well. our line achieves a very good speed for the length, 2.5mb just about.  and even capping it at 1 or .5 it still drops.

i think the next trick up my sleeve will be to involve the or area manager for some end to end testing.
« Last Edit: August 06, 2012, 08:19:22 PM by gouledw »
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gouledw

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Re: Attenutation
« Reply #27 on: August 06, 2012, 08:23:23 PM »

Perhaps Black Sheep can explain more about what his findings have been if he's ever come across 'SHINE'?
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coolsnakeman

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Re: Attenutation
« Reply #28 on: August 07, 2012, 10:19:16 AM »

Edd,

Problem is in order for you to get a REIN engineer tasked a boost/SFI has to get a ticket raised to the REIN desk but before that happens they have to see a potential REIN issue there and if they don't after the tick sheet has been completed then they will reject the trouble ticket and deem it as TOK. As stated in the email i sent you they appear to have sent the router to the wrong address (typical) but it appears another RMA has been put through for you to get the router out to the correct address so here is hoping you get it tomorrow  ;D. Don't think it will make much a difference but anything is worth a try. Let me know edd when you have your router turned on. Your order has completed today and your back on rate adaptive so its important you leave the router switched on. Unfortunately nothing can be actioned until this has completed its training period but i will be keeping an eye on it.

Regards
Gary
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