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Standard User Banger
(eat-sleep-adslguide) Mon 27-Mar-17 17:58:07
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Vectoring


[link to this post]
 
My TP-link Stats say vectoring - not configured and G.Inp not enabled. What is vectoring as my sync is only 47/12mbps on an 80/20 service.

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and TP-Link WD9970 on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...
Standard User PaulKirby
(knowledge is power) Mon 27-Mar-17 18:15:53
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Re: Vectoring


[re: Banger] [link to this post]
 
Vectoring is a transmission method that employs the coordination of line signals for reduction of crosstalk levels and improvement of performance.

It is based on the concept of noise cancellation, much like noise-cancelling headphones.

The ITU-T G.993.5 standard, "Self-FEXT cancellation (vectoring) for use with VDSL2 transceivers" (2010), also known as G.vector, describes vectoring for VDSL2.

The scope of Recommendation ITU-T G.993.5 is specifically limited to the self-FEXT (far-end crosstalk) cancellation in the downstream and upstream directions.

The far end crosstalk (FEXT) generated by a group of near-end transceivers and interfering with the far-end transceivers of that same group is cancelled.

This cancellation takes place between VDSL2 transceivers, not necessarily of the same profile.

Hopefully this is correct.

Paul

BTBroadband - Infinity 4 - 310Mbps (down), 31Mbps (up)
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Standard User Banger
(eat-sleep-adslguide) Mon 27-Mar-17 19:50:12
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Re: Vectoring


[re: PaulKirby] [link to this post]
 
Ta.

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and TP-Link WD9970 on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/results.html...


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Standard User Andrue
(eat-sleep-adslguide) Mon 27-Mar-17 20:20:18
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Re: Vectoring


[re: Banger] [link to this post]
 
In reply to a post by Banger:
Ta.
And it's worth noting that few cabinets have it enabled. Last I heard BT had completed trials and were going to roll it out in a few select areas where they thought it would do the most good. I got the impression that the intent was to help out areas where lines are under performing rather than to give a speed boost across the board.

---
Andrue Cope
Brackley, UK
Standard User Banger
(eat-sleep-adslguide) Mon 27-Mar-17 20:24:47
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Re: Vectoring


[re: Andrue] [link to this post]
 
Interesting, I am also interested in the rollout of 3db target margin which has already started.

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and TP-Link WD9970 on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/button/14906...
Standard User David_W
(knowledge is power) Mon 27-Mar-17 20:36:37
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Re: Vectoring


[re: Andrue] [link to this post]
 
My understanding is that Openreach are adding the additional vectoring hardware to VDSL2 cabinets only where this will help them hit a BDUK coverage target, or on cabinets to be enabled for LR-VDSL (where vectoring is part of the overall LR-VDSL solution). Outside those scenarios, there is essentially zero return on the considerable investment required to upgrade the DSLAM for vectoring; a few people might take a higher tier than would otherwise be the case, but the difference in wholesale charge for the FTTC port is not very much between the various tiers.

Vectoring is an integral part of G.FAST.



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Standard User Banger
(eat-sleep-adslguide) Mon 27-Mar-17 20:45:52
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Re: Vectoring


[re: David_W] [link to this post]
 
Would a new cabinet have the necessary hardware for vectoring?

Tim
www.uno.net.uk & freenetname
Asus DSL-N55U and TP-Link WD9970 on 80 Meg LLU Fibre
http://www.thinkbroadband.com/speedtest/button/14906...
Standard User Ignitionnet
(knowledge is power) Mon 27-Mar-17 21:38:26
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Re: Vectoring


[re: Banger] [link to this post]
 
In reply to a post by Banger:
Would a new cabinet have the necessary hardware for vectoring?


Not by default. As mentioned before it would be the exception, not the rule.
Standard User Andrue
(eat-sleep-adslguide) Mon 27-Mar-17 22:06:38
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Re: Vectoring


[re: Banger] [link to this post]
 
In reply to a post by Banger:
Interesting, I am also interested in the rollout of 3db target margin which has already started.
Yeah, that one has lower cost. Almost nothing in fact as it's just a configuration change.

---
Andrue Cope
Brackley, UK
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