Interleaved

Started by RA-1972, Jan 26, 2008, 15:43:39

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RA-1972

what does interleaved do or what does it mean ? if any one can help .

cheers.

Rik

Interleaving is used to introduce error correction to a line, it helps to stabilise the service. Sometimes, it gets turned on when it's not needed, if you can post your downstream sync speed, noise margin and attenuation, we can take a guess at whether that might have happened in your case.
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

Niall

From an FPS gamers point of view, it doubles your ping and makes FPS gaming virtually impossible.
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g7pkf

Interleaving etc explained


Gives a good no nonsense basic explanation.

gamers and voip users don't like it. But if your on an iffy line it can be the only way to get the line stable.

RA-1972

hi this is what i got off me router ..


   
  DSL Status: UP 
DSL Modulation Mode: Auto 
DSL Path Mode: INTERLEAVED 
Downstream Rate: 6336 Kbps 
Upstream Rate: 448 Kbps 
Downstream Margin: 10 db 
Upstream Margin: 20 db 
Downstream Line Attenuation: 23 
Upstream Line Attenuation: 26 
Downstream Transmit Power: 19 
Upstream Transmit Power: 11 
LOS Errors: 0 
   
 
--------------------------------------------------------------------------------

and yes i am a fps gamer too cs, cod4 etc

Rik

You seem to have an increased target noise margin, this would usually be done if the line has been unstable (dropped connections). Invariably, BT turn on interleaving at the same time.

Try pinging www.bbc.co.uk and www.idnet.net - I get 24ms pings with interleaving on.
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

RA-1972

i am getting the early 30 ts just done speed test and speed is good .



]speed test[/url]

Rik

Quote from: g7pkf on Jan 26, 2008, 15:50:12
Interleaving etc explained


Gives a good no nonsense basic explanation.

gamers and voip users don't like it. But if your on an iffy line it can be the only way to get the line stable.

Useful link, Dean, thanks. :)

It might be worth mentioning that, as I understand it, there are different 'depths' of interleaving which can be applied, so the hit on pings is not always that bad.
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

g7pkf

Quote from: Rik on Jan 26, 2008, 15:53:41
You seem to have an increased target noise margin, this would usually be done if the line has been unstable (dropped connections). Invariably, BT turn on interleaving at the same time.

Try pinging www.bbc.co.uk and www.idnet.net - I get 24ms pings with interleaving on.

same ping times here

RA-1972

It could be that i am still in the first week with idnet .

Rik

Quote from: RA-1972 on Jan 26, 2008, 15:55:46
i am getting the early 30 ts just done speed test and speed is good .

Ignore the pings on the speed test, they are always wrong. :) Early 30s says you have medium interleaving on. If you can improve your line's stability, by improving your internal phone wiring, it might be worth asking for the interleaving to be taken off, but I think you need to get to a better point than a 10db margin. How often do you lose sync, whereabouts in the country are you (this affects ping times too)?
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

RA-1972

#11
Hi i am down in devon newton abbot about 1 k from exchange , i will check me phone sockets etc ..



ping www.idnet.net

Pinging www.idnet.net [212.69.36.10] with 32 bytes of data:

Reply from 212.69.36.10: bytes=32 time=38ms TTL=59
Reply from 212.69.36.10: bytes=32 time=38ms TTL=59
Reply from 212.69.36.10: bytes=32 time=36ms TTL=59
Reply from 212.69.36.10: bytes=32 time=38ms TTL=59

Ping statistics for 212.69.36.10:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 36ms, Maximum = 38ms, Average = 37ms

ping www.bbc.co.uk

Pinging www.bbc.co.uk [212.58.251.201] with 32 bytes of data:

Reply from 212.58.251.201: bytes=32 time=37ms TTL=249
Reply from 212.58.251.201: bytes=32 time=37ms TTL=249
Reply from 212.58.251.201: bytes=32 time=38ms TTL=249
Reply from 212.58.251.201: bytes=32 time=38ms TTL=249

Ping statistics for 212.58.251.201:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 37ms, Maximum = 38ms, Average = 37ms




Edit: Personal data removed

Rik

Fairly consistent. See if you can reduce noise pickup on the line, particularly disconnect the ring wire if you have multiple extensions. Don't use flat extensions cables from electrical stores, only round ones.

There's a guide here on things you can do.
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

RA-1972

#13
Just removed the ring wire  a improvement on the pings cheers RIK....

ping www.idnet.net

Pinging www.idnet.net [212.69.36.10] with 32 bytes of data:

Reply from 212.69.36.10: bytes=32 time=29ms TTL=59
Reply from 212.69.36.10: bytes=32 time=31ms TTL=59
Reply from 212.69.36.10: bytes=32 time=31ms TTL=59
Reply from 212.69.36.10: bytes=32 time=29ms TTL=59

Ping statistics for 212.69.36.10:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 29ms, Maximum = 31ms, Average = 30ms

ping www.bbc.co.uk

Pinging www.bbc.co.uk [212.58.251.201] with 32 bytes of data:

Reply from 212.58.251.201: bytes=32 time=33ms TTL=249
Reply from 212.58.251.201: bytes=32 time=29ms TTL=249
Reply from 212.58.251.201: bytes=32 time=30ms TTL=249
Reply from 212.58.251.201: bytes=32 time=29ms TTL=249

Ping statistics for 212.58.251.201:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 29ms, Maximum = 33ms, Average = 30ms



Edit: Personal data removed

Rik

Try re-booting the router in the morning, there's a good chance you'll pick up a higher sync speed by then.
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

Lance

It would be good to see a new set of stats from the router now the ring wire is removed, too.
Lance
_____

This post reflects my own views, opinions and experience, not those of IDNet.

RA-1972

DSL Status: UP 
DSL Modulation Mode: Auto 
DSL Path Mode: INTERLEAVED 
Downstream Rate: 4928 Kbps 
Upstream Rate: 448 Kbps 
Downstream Margin: 10 db 
Upstream Margin: 22 db 
Downstream Line Attenuation: 23 
Upstream Line Attenuation: 26 
Downstream Transmit Power: 19 
Upstream Transmit Power: 11 
LOS Errors: 0 

Rik

It looks like your line is still susceptible to noise. See what a morning re-sync brings. If the speed goes significantly higher, there's more work to be done.
Rik
--------------------

This post reflects my own views, opinions and experience, not those of IDNet.

old Bill

Talking of Interleaving, there is a Enta reseller out there which lets you turn your Interleaving on or off from your control panel. Sounds good but you could mess up your line if you dont know what you are doing.

old Bill

No problems with my line, (for a change) have been up and running with Idnet for 2 days now just wondered how my error count was looking ?

DSL Cumulative Errored Seconds:   7157   46   22   0:00:11
DSL Severely Errored Seconds:   195   0   0   0:36:03
DSL Corrected Blocks:   0   0   0   0:00:00
DSL Uncorrected Blocks:   17993   132   79   0:00:11

connected 2 days 2 hours

Rik

One error every 244 seconds, if my maths is right, Bill. I'd be slightly concerned about 9,000 uncorrected blocks per day though.
Rik
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This post reflects my own views, opinions and experience, not those of IDNet.

RA-1972

DSL Status: UP 
DSL Modulation Mode: Auto 
DSL Path Mode: INTERLEAVED 
Downstream Rate: 5280 Kbps 
Upstream Rate: 448 Kbps 
Downstream Margin: 11 db 
Upstream Margin: 21 db 
Downstream Line Attenuation: 23 
Upstream Line Attenuation: 26 
Downstream Transmit Power: 19 
Upstream Transmit Power: 11 
LOS Errors: 0 


Its a bit higher today i will do some more checks tomorrow , seeing i am connected to the master socket do i need to remove the bell wire from all the other sockets too ? would that help ?

Lance

Removing the ring (or bell) wire from all sockets may well help, depending on your wiring set up. Certainly no harm in disconnecting it!
Lance
_____

This post reflects my own views, opinions and experience, not those of IDNet.

Rik

I'd definitely vote for removing the ring wire.
Rik
--------------------

This post reflects my own views, opinions and experience, not those of IDNet.

RA-1972

just a quicky if i want interleaved removed who do i ask bt or isp ?