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Topic # 27348 22-Oct-2008 21:51
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hi guys
new to geekzone
just wanting some help on the whole adsl2+ buzz
im currently with slingshot on the "fire" plan i think....(FS/128K)...
now i checked telecom's website and it says my addy has ADSL2+
so i've upgraded my router as my old one wasnt compatible with ADSL2+
now we got it all setup and running and my speeds havent changed at all..
in my router setup details it says my speeds are like 7000kbps and 128kbps...
im not sure if there is something else i have to do, or it's my upload that is restricting me, or if it's the slingshot plan thats stopping me....

cheers in advance

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  Reply # 172904 22-Oct-2008 22:08
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How far are you from exchange

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  Reply # 172919 22-Oct-2008 23:16
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how do i find this out?


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  Reply # 172923 22-Oct-2008 23:26
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had a look around and found this topic:

my attenuation(dB) for downstream is 33, which from the internode websites says i should be about to do around 15000kbps.
the 2nd website then says from that i should be around within 2km of a exchange


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  Reply # 173036 23-Oct-2008 13:13
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Sounds like youre on an ADSL profile and not ADSL2.  Does Slingshot offer ADSL2 ?

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  Reply # 173038 23-Oct-2008 13:27
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They arn't advertising adsl2+ so id say no they dont offer adsl2+ yet.
Another thing is you would never get adsl2+ speeds on that plan anyway. Your upload speed of 128k is going to cap your download speed to around 4mbit, if you want adsl2+ when it is offered you will need to move to a FS/FS plan.

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  Reply # 173087 23-Oct-2008 15:45
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Slingshot or any other ISP for that matter do not control the connection speed between the DSLAM and your modem, this is a function of the connection and assuming the DSLAM is 2+ then you will get a 2+ connection.

As has also been said, with a 128k downstream you will never a higher download than around 4.5Mb/s, this is a limit due to TCP acknowledgements. However if you modem is reporting 7000Mb/s at 33dB then it implies its still connecting at ADSL1, either due to a modem setting thats limiting it to G.DMT or the port you are on is not set for 2+. Still its not an issue while on a FS/128k plan.

Maybe you could post more details from the modem.


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  Reply # 173327 24-Oct-2008 12:00
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thanks for ya feedback ppl :D

yea, i saw on their website they mentioned that ADSL2+ was available in nz, i couldnt see a isp advocating a service which they do not yet support (and others do) so just assumed that they ran ADSL2+.

im looking at switching over the orcon so this should resolve this part of this:

cyril7 : so if i understand correctly, even if slingshot do not run ADSL2+ on their network i should still be able to connect @ adsl2+ speeds even though my upload of 128k is restricting me? or am i misunderstanding it?

thanks again people :D

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  Reply # 173338 24-Oct-2008 12:53
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Hi Damien, Slingshot do not have their own DSL service, they use Telecoms wholesale UBS service, so broadly speaking slingshot deliver all the traffic from their BRAS to aone of several Telecom transfer/agregation points and from their telecom deleiver it out to DSLAMS in all the exchanges/cabinets. So if Telecom have upgraded their local DSLAM to ADSL2+ then you will be on ADSL2+ as far as you connection goes regardless of what or who the ISP is.

If you are on a FS/128 plan then your computer will not be able to provide acks back to the web server that you are connecting to fast enough, so this will make the download speed to limit somewhere around 4.5Mb/s. This is a limit between you and the server you are connected imposed by a bottle neck in the middle. If you go on a Fs/Fs plan then you will get downloads closer to your connection speed, assuming nothing else is limiting things, most ISPs dont have any deliberate limitations, however howmuch backhaul your ISP has catered for and capacity to the server to which you are connecting are all other matters.


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