General Discussion
  >> Fibre Broadband


Register (or login) on our website and you will not see this ad.


  Print Thread
Standard User planetf1
(experienced) Sun 23-Jan-11 14:20:31
Print Post

FTTC VDSL DLM


[link to this post]
 
When installed my ping to bbc.co.uk (from a wired connection) was around 24ms.

Since day 2 it jumped to 38ms and stayed there.

My guess is dlm has enabled interleaving. Does anyone know if this gets permanently set in day 1 or is it dynamically switched off/on depending on line conditions over a ~3 day period?

Thanks
Nigel.
Standard User yarwell
(sensei) Sun 23-Jan-11 14:29:36
Print Post

Re: FTTC VDSL DLM


[re: planetf1] [link to this post]
 
I believe it is dynamic, it may also depend on which of the three stability options you're on.

Phil

MaxDSL - goes as fast as it can and doesn't read the line checker first.

MaxDSL diagnostics
Are your kids pirates ? Limewire, Bearshare, Kazaa, BitTorrent, eMule are all tools of the trade.
Standard User griff_90
(fountain of knowledge) Sun 23-Jan-11 14:30:38
Print Post

Re: FTTC VDSL DLM


[re: yarwell] [link to this post]
 
I've had FTTC/VDSL2 for 5 months now and the level on interleaving has changed numerous times over that period.


Register (or login) on our website and you will not see this ad.

Anonymous
(Unregistered)Sun 23-Jan-11 18:27:14
Print Post

Re: FTTC VDSL DLM *DELETED*


[re: yarwell] [link to this post]
 
Post deleted by billford
Standard User planetf1
(experienced) Sun 23-Jan-11 23:28:12
Print Post

Re: FTTC VDSL DLM


[re: yarwell] [link to this post]
 
In reply to a post by yarwell:
I believe it is dynamic, it may also depend on which of the three stability options you're on.


can you explain more about the stability options?
Are these determined by DLM or assigned by ISP ((I'm with BT - Infinity)
Standard User yarwell
(sensei) Mon 24-Jan-11 08:30:34
Print Post

Re: FTTC VDSL DLM


[re: planetf1] [link to this post]
 
the stability options are selected by your ISP when ordering the product and form inputs to the DLM. Standard, stable and superstable presumably implies increasing SNR margin and impulse protection / interleaving levels.

Phil

MaxDSL - goes as fast as it can and doesn't read the line checker first.

MaxDSL diagnostics
Are your kids pirates ? Limewire, Bearshare, Kazaa, BitTorrent, eMule are all tools of the trade.
Standard User planetf1
(experienced) Mon 24-Jan-11 18:31:30
Print Post

Re: FTTC VDSL DLM


[re: yarwell] [link to this post]
 
Are switches between the "profiles" only done manually/through an order (presumably this might occur if a line ws especially troublesome)?

This profile then presumably affects the dlm algorithm/liimits to potentially make it more conservative.

Would I be correct in assuming most ISPs would provision on standard? BT Infinity?

This would mean my profile should continuously adapt via DLM and not get stuck.

Just worried something happened in first few days that will manually "fix" my profile for ever more. In particular chasing a latency increase.
Standard User yarwell
(sensei) Mon 24-Jan-11 20:22:01
Print Post

Re: FTTC VDSL DLM


[re: planetf1] [link to this post]
 
I would guess most use standard, the clue being in the name smile - but I don't know that.

It's an option at order time, and would be a change order to switch it.

The docs say it continually adjusts but depending on its parameters may not actually change anything if what it measures stays within parameters.

Phil

MaxDSL - goes as fast as it can and doesn't read the line checker first.

MaxDSL diagnostics
Are your kids pirates ? Limewire, Bearshare, Kazaa, BitTorrent, eMule are all tools of the trade.
  Print Thread

Jump to