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  Reply # 1966607 1-Mar-2018 16:38
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coffeebaron: Fibre has been brought forward in my town, so I probably won't get to experience Vectoring.

 

At current rate we won't get to experience it either :)




'That VDSL Cat'
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  Reply # 1972850 11-Mar-2018 21:16
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hio77:

 

Looks like line is rocking a very similar broadcom based linecard.

 

 

 

downtime was sub 2 mins, Impressive work.

 

Hard to discuss statistical changes on lines, as one was running at 5dB (power cut and synced fast) and the other had a ddDLM movement with the card switching.

 

 

 

I was expecting to see ddDLM be reset and all lines go to default state but seems not.

 

Statistically, error rates have dropped but that's once again hard to say if related to snr changes, bin allocation, remade connection etc.

 

 

So coming back to this one with an interesting development.

 

 

 

Over the weekend, ddDLM pulled the line back to 9dB for a day then dived straight back down to 6dB with a better PSD mark.

 

 

 

 

 

Overall, pre-vectoring linecard compared to now, I've raised 2mbit on average syncs (so no after powercut, low noise resync or anything).

 

Not bad for such a change! still looking forward to that vectoring toggle where i suspect being on a longer line i'll see a reasonable amount of gains. 

 

 

 

Also decent gains in US0. It's now preforming equally to ADSL2+ US0 utilization. 





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Any comments made are personal opinion and do not reflect directly on the position my current or past employers may have.




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  Reply # 1988085 4-Apr-2018 10:45
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So first of the next trails went through last night.

 

 

 

Overall, batch was mainly longer lines which saw a reduction in speed - lines all moved 8b to 17a so to be expected.

 

On average over all tests, there was a 1.5mbit increase in download speeds and a 1.3mbit loss in upstream speeds. (remembering currently they only use vectoring gains on downstream, upstream is simply protected and thus i'd expect to see slight curved results)

 

 

 

The interesting one was a 108/49 line... seems it had a bit of a mess around on it, 108 cap was removed raising it to 110mbit but then the upstream was capped down to 30mbit!

 

This certainly did affect average numbers, removing this as an outlier bring average upstream speeds to a 0.2mbit drop.

 

 

 

 

 

I do admit I'm a tad jealous about G.INP being enabled on all these lines though...

 

Probably won't be for a bit longer before i have realistic numbers on how error rates are looking. to me, unlike the Nokia comments on Vectoring Improving speeds, we simply arent seeing it. error rates and latency, and thus likely Userexperience/stability gain more than performance.

 

 

 

I'd question if the likes of Zero Touch is holding things back. i can't really comment on this from a technical angle though; the white papers are simply so vague of how it all works.

 

 

 

 

 

Overall though, looks like for all these lines, the upgrade was as it should be, Seamless.

 

 

 

Will be interesting when @chorusnz have their next press release on this.





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  Reply # 1988103 4-Apr-2018 11:04
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I'm also interested to see if Chorus publish the 800 or so DSLAMS that are going to be receiving vectoring cards.

 

I was told in my past life that only exchanges with a single DSLAM and cabinets will be upgraded. As the vectoring capability cannot work across DSLAMs so that excludes any of the larger regions with more than one DLSAM at the exchange.

 

My back of the piece of paper guesstimate is only 16k actual customers could see improvements from this. So my inner voice asked why go through all this pain and possible incompatibilities with certain routers that say they support G.INP but really don't and thus won't reconnect post card swap.

 

I am also jealous of people getting a bump in speed, and since I don't yet have UFB any increase in speed on my VDSL connection would be gratefully accepted.








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  Reply # 1988107 4-Apr-2018 11:07
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BarTender:

 

I'm also interested to see if Chorus publish the 800 or so DSLAMS that are going to be receiving vectoring cards.

 

I was told in my past life that only exchanges with a single DSLAM and cabinets will be upgraded. As the vectoring capability cannot work across DSLAMs so that excludes any of the larger regions with more than one DLSAM at the exchange.

 

My back of the piece of paper guesstimate is only 16k actual customers could see improvements from this. So my inner voice asked why go through all this pain and possible incompatibilities with certain routers that say they support G.INP but really don't and thus won't reconnect post card swap.

 

I am also jealous of people getting a bump in speed, and since I don't yet have UFB any increase in speed on my VDSL connection would be gratefully accepted.

 

 

 

 

Most of the cards have aleady been swapped out. It isn't turned on yet though.

 

i agree though, level of effort for the results we actually see... not great...





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  Reply # 1988127 4-Apr-2018 11:33
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hio77: Most of the cards have aleady been swapped out. It isn't turned on yet though.

 

i agree though, level of effort for the results we actually see... not great...

 

The largest difference should be in the upstream. I wasn't looking at that at the time, but you can run reports to see if the upstream has had a non-trivial jump.








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  Reply # 1988137 4-Apr-2018 12:03
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BarTender:

 

The largest difference should be in the upstream. I wasn't looking at that at the time, but you can run reports to see if the upstream has had a non-trivial jump.

 

 

You mean dropping the 70/30 ikanos cards? that's pretty obvious on reports.

 

 

 

in terms of vectoring, until chorus actually apply any gains we will always see a minor drop...





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  Reply # 1988150 4-Apr-2018 12:23
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These 2 trial sites were about testing a new deployment App, not finding sites where we might realise some good speed gains.

 

The number of VDSL services was quite low 1-2 dozen, so crosstalk wasnt much of an issue.  This meant vectoring gain on these 2 sites wasnt huge.  I found it to be higher than your figures though

 

hio77:

 

I'd question if the likes of Zero Touch is holding things back. i can't really comment on this from a technical angle though; the white papers are simply so vague of how it all works.

 

 

Definitely not holding anything back.  It means modem replacements arent necessary, at the expense of upstream vectoring.

 

Vector capable modems still get some downstream crosstalk cancellation from the modems which dont support vectoring.  Swapping out modems would be pretty unpalatable for RSPs and would delay vectoring by months/years.

 

hio77:

 

Overall though, looks like for all these lines, the upgrade was as it should be, Seamless.

 

 

Yes, This trial was about a new deployment app we developed.  the Seamlessness is also thanks to Zero-Touch :)

 

 




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  Reply # 1988155 4-Apr-2018 12:34
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BMarquis:

 

These 2 trial sites were about testing a new deployment App, not finding sites where we might realise some good speed gains.

 

The number of VDSL services was quite low 1-2 dozen, so crosstalk wasnt much of an issue.  This meant vectoring gain on these 2 sites wasnt huge.  I found it to be higher than your figures though

 

 

Yes very low, also majority are longer lines.

 

 

 

My figures jumped on averages to smooth out any powercut spikes etc to be fair in retrospect i realized my averaged figures include a slight weighting towards less improvement. (i ran the numbers too early in the morning)

 

2.8/-0.9 (2.8/0.2 with outlier excluded) probably matches a little more :)

 

BMarquis:

 

Definitely not holding anything back.  It means modem replacements arent necessary, at the expense of upstream vectoring.

 

Vector capable modems still get some downstream crosstalk cancellation from the modems which dont support vectoring.  Swapping out modems would be prett unpalatable for RSPs and would delay vectoring by months/years.

 

Yes, This trial was about a new deployment app we developed.  the Seamlessness is also thanks to Zero-Touch :)

 

 

Bingo, the expense factor is what i suspected.

 

 

 

Makes sense.

 

 

 

Any comments on the 30mbit upstream limit that seems to have been imposed? that was the interesting one for me...

 

FEC/CRC rates so far are looking solid, It's hard to report on that without saleable data that won't be available straight away on my end in mass.





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  Reply # 1991825 9-Apr-2018 09:12
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BarTender:

 

I am also jealous of people getting a bump in speed, and since I don't yet have UFB any increase in speed on my VDSL connection would be gratefully accepted.

 

 

 

 

You can't complain about your VDSL when you recently moved house and chose to live in a poor VDSL zone :P

 

Lack of forethought there ....  ;)





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  Reply # 1991826 9-Apr-2018 09:18
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In a move that I'm sure will be controversial Chorus are trialing capping the upstream speed of Vectored lines to 30Mbit in order to get higher downstream speeds.   Some will love that, some won't.





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Master Geek
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  Reply # 1991868 9-Apr-2018 09:51
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I'd be fine with this - not that I'm going to get vectoring as I'm getting UFB in 4 years....


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  Reply # 1992623 10-Apr-2018 11:19
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Rural Vdsl user CYD/g

 

 

 

Had both Vdsl lines drop this morning at 10.30ish, after checking the ubnt link found connections to modems was still up. 

 

Drove to the cabinet and found the genuinely friendly Chorus tech, who advised he had upgraded the line cards for vectoring. 

 

I can't remember what the vectoring screen displayed pre the card replacement. but I am sure it was vectoring disabled or words to that effect.

 

Not sure if vectoring is live with the new cards yet, Hoi77 can you make anything of this. 

 

 

 

Approx 570m from Cabinet with 2 vdsl connections, dsl stats is only compatible with the 2degrees one.

 

 

 

Cheers

 

 

 

 

 

 




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  Reply # 1992629 10-Apr-2018 11:24
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JeremyNzl:

 

Rural Vdsl user CYD/g

 

 

 

Had both Vdsl lines drop this morning at 10.30ish, after checking the ubnt link found connections to modems was still up. 

 

Drove to the cabinet and found the genuinely friendly Chorus tech, who advised he had upgraded the line cards for vectoring. 

 

I can't remember what the vectoring screen displayed pre the card replacement. but I am sure it was vectoring disabled or words to that effect.

 

Not sure if vectoring is live with the new cards yet, Hoi77 can you make anything of this. 

 

 

 

Approx 570m from Cabinet with 2 vdsl connections, dsl stats is only compatible with the 2degrees one.

 

 

 

Cheers

 

 

 

 

CRQ000000201715

 

 

 

upgrade on :

 

 

 

 

 

 

This isn't vectoring turning on (5 is disabled) Simply the new linecards.





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  Reply # 1992635 10-Apr-2018 11:28
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hio77:

 

 

 

This isn't vectoring turning on (5 is disabled) Simply the new linecards.

 

 

 

 

Any visible timeframe for activation ?


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