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# 41638 21-Sep-2009 09:45
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So Telecom wholesale's VDSL2 rollout is almost ready to go public, so I was wondering if XNet are going to offer VDSL2 anytime soon?

I'm in Hamilton on ADSL2+ on xnet fusion at the moment, i'd be interested in upgrading if Xnet are going to offer this..

(Telecom's $20 premium charge has got the ComCom interested, it seems)


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  # 257511 22-Sep-2009 10:05
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Me too! On phone to World Exchange at the moment to get an answer to this question, and if my exchange is VDSL2 enabled. Got the typical answer from the tech support guy who obviously doesn't fully understand the product, or doesn't know how to effectively relay the answer.

Basically he had to go ask his supervisor what VDSL was essentially then gave me a half baked answer on his half understanding.

Ohh well. Heres hoping my exchange is VDSL2 enabled and I can switch from ADSL1 tech.

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  # 257520 22-Sep-2009 10:38
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I really do wonder how many people think moving from ADSL to VDSL is a simple matter of replacing their modem..

Because in 99% of cases it's not.

You need a professionally installed VDSL master filter and new cabling. You can't just swap your modem out and keep the existing ADSL plug in filters.



 
 
 
 


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  # 257522 22-Sep-2009 10:45
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I dont use POTS.
I use a Linksys WAG200 + WRT54G running asterisk, and a PAP2t plumbed back into the central phone system at home.

Soo not adsl filters etc. No PSTN line to filter etc.

If even then I need a master filter fro some other reason not an issue to install.

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  # 257530 22-Sep-2009 11:41
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I have some sample VDSL2 filters here and have done some trials with my own VDSL2 modems and miniDSLAM. The new filters do give significantly better than the MM3200B, essentially the MM3200B has poor return loss in the top of the band, I guess somewhere way above 4-5MHz, which limits top end performance.

If you go naked then you dont need a filter, however there is some discussion that a filter can assist in presenting a better return loss so help improve things, I have not found that or the effect is subtle.

What I do know is that you want to limit any line cords to a short as possible, I have found running good twisted pair (cat3 or better, cat5e is prefered) from the demarc to the modem and using a line cord of 300mm or less is best, basically a non twisted pair line cord can kill the signal and my guess is couple in rubbish as well.

This last advise I would recommend for ADSL/2+ as well as VDSL2 regardless.

Cyril

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  # 257534 22-Sep-2009 12:02
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cyril7: If you go naked then you dont need a filter, however there is some discussion that a filter can assist in presenting a better return loss so help improve things, I have not found that or the effect is subtle.


I was told a while back that Telecom were looking at mandating the install of filters for all VDSL installs. Do you know anything about this?


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  # 257538 22-Sep-2009 12:13
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Hi, yes I have been told that also, but I think its more a process and installation consistancy thing rather than a technical one.

What is interesting is that the new VDSL2 filter standard requires that the filters are 3port devices. There are more than one design thats approved, they all have the same form factor as the MM3200B however with an extra green(modem) pair. Some of those filters are infact just two port devices with the green(modem) pair connected to the input, and some have a HP network component between the input and modem. However all the filters meet the new spec. I have yet to compare if the filters with a HP path between the line and modem work better, however as they all meet the spec I would suggest any improvement would be subtle.

There is some discussion that to place an appropriate network between the line and modem assist in matching and gives better performance, but as I say I have not done any experimentation with this and I would suggest that with a large variation in line conditions any advantage would be either here or there.

But I personally install filters even if naked simply to reduce anyone having to poke around in future should they return to POTS, ie make it as plug and play as possible.

Cyril

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  # 257544 22-Sep-2009 12:46
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Is there a service availability tool to determine what exchanges etc have been upgraded with VDSL2 gear?

More specifically, how can I find out if either my exchange (exchange area: Atawhai) or nearest roadside cabinet (AWI/U) has been upgraded with VDSL2 gear?

 
 
 
 


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  # 257547 22-Sep-2009 12:59
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The only info is what is in the pdf below, but I think the answer is that in the areas noted if you ask for it then one of the all mode line card will be made available, and as I read it all new cards installed in new cabinets and faulty/replaced cards will be upgraded.

http://www.telecomwholesale.co.nz/f554,342049/342049_Telecom_Wholesale_expands_super-fast_VDSL2_broadband_roll_out.pdf

Cyril

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  # 257549 22-Sep-2009 13:10
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Well fro me personally, I live in Atawhai, Nelson. If an ISP is able to give me VDSL2 service on my exchange (currently only has ADSL1 tech) then I will be switching straight away. I am hopping World Exchange can offer me a VDSL2 plan, trial or not. The alternative to this for me is setting up a double hop wireless link via rootennas into the CBD to get ADSL2+. This would add ~20ms I would think to latency times which for me would be a pain!

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  # 257551 22-Sep-2009 13:16
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While you are still on an ASAM (old ADSL1) DSLAM then there is no way you will be offered VDSL2 as its only offered on ISAM which is not due in your area till March 2011.

Cheers
Cyril

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  # 257554 22-Sep-2009 13:25
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cyril7: While you are still on an ASAM (old ADSL1) DSLAM then there is no way you will be offered VDSL2 as its only offered on ISAM which is not due in your area till March 2011.

Cheers
Cyril



While I know this to be true, I was hoping that one of the many outages I have been experiencing lately was due to an early network upgrade of some description. I will still cross my fingers lol.

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  # 257558 22-Sep-2009 13:37
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Devil's Advocate:

Does anyone currently have faith in Xnet's ability to provision and manage enough international bandwidth to make it worthwhile even considering VDSL?

I'm sure local speed would be a boon and maybe a lot of people are interested in that but crippled international is/would be frustratingly sad pants.

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  # 257561 22-Sep-2009 13:41
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When downloading off US New Groups I generally get ~ 600-700k mark on Adsl1 exchange sooo not too bad really....

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  # 257568 22-Sep-2009 13:51
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I'm interested in this product from a business perspective where things like international speed aren't quite as important. The biggest thing with vdsl2 I believe is the increased upload speed, remote branches running dsl will finally be able to move data back to the head office at a decent rate without the need for more expensive uns/fibre/wireless connections.

This is also coupled with this new service from Telecom which will allow providers to offer different service levels. I see that xtreme networks have just released a product based on this that offers unlimited national traffic:
http://www.xtreme.net.nz/connections/adsl.php

The only thing with this is that the price of international is still quite high. I would prefer an option for more contended international bandwidth but at a cheaper price.

The alternative to this I have been look at is this new smartlinx network in Wellington and a similar wireless setup in the BOP. Haven't heard much about either though.





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  # 257729 23-Sep-2009 09:52
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Im hoping its available in central nelson on oct 1st.
Though I wont suggest using xnet I will suggest that my boss gets it, probably through Telecom.

Literally 20x cheaper than any fibre plan we have had quoted to us.

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