ADSL Upload speeds.

Totempole

Executive Member
Joined
Sep 21, 2011
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Location
Cape Town
So, I'm currently on a 4Mb ADSL line, and the download speeds are perfectly adequate for me. But the upload rate is a bit of a ball-breaker at only 512K.

Is my only option to upgrade to an 8M or 10M line in order to get the 1024K upload sync speed?

I really think TK need to make 1024K upstream the norm on 4Mb lines. It used to be that way when 4Mb was the highest ADSL speed you could get, or at least when ADSL2+ came in.

We're paying enough for it. Any thoughts or suggestions would be appreciated.
 
It is all about the standard applicable to the ADSL service in question in the first instance.

For the original ADSL service in SA according to the G.992.1 standard using DMT, the upstream bandwidth available was/is from 25 - 138 kHz, which allows for 1024 kb/s as a maximum upstream data rate.

So In theory we all should be able to utilise the bw fully. (depending on the attenuation and the SNR margin available of course).

BUT it was common to implement ADSL service according to a 25% rule, which stated that the upstream available would be no more than 25% of the downstream data rate.

so the options were:

1024 - 256
2048 - 512
4096 - 1024 as an ADSL service.

When that changed to restricting the upstream on 4 Mb/s to less than 1 Mb/s I do not know.
 
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