Why Telkom's VDSL upload speeds are so slow

I was under the impression that Gpon is essentially last mile tech? (point to many) I'd have thought that exchanges would be linked with point to point tech?
 
POTS uses a single twisted pair - the upstream and downstream data is on a single physical line and uses frequency division multiplexing. Because higher freqencies require shorter loops you practically have limited total bandwidth and the asymetric nature of VDSL is based on the assumption that most people would prefer faster downloads rather than faster uploads (e.g.I would prefer 20Mbps downstream and 2 upstream instead of 11 up AND down.)

That is the number 1 reason.

I doubt that GPON is even a factor here unless Telkom is somehow building a new fiber network with a shelflife of ice cream in the Sahara. Google provides 1Gbps UP & down using GPON technology in the US. Fiber has a lot of bandwidth.
 
Johand said:
That is the number 1 reason.
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While the tech/standards choices are certainly a big reason, that doesn't answer the question of why 2Mbps and 4Mbps ADSL users only get a max of 512kbps up when they could just as well be given the maximum their lines could handle, and why 20Mbps VDSL subscribers don't just get 3Mbps upstream (maximum) like 40Mbps subscribers do.
 
I would presume it's the same reason ADSL has been hobbled by Telkom in various ways for over a decade: preventing cannibalisation of their very lucrative business products. Upload speed is a much bigger differentiator for corporate, and that low upload speed keeps them on much more expensive alternate technologies.
 
km2 said:
I would presume it's the same reason ADSL has been hobbled by Telkom in various ways for over a decade: preventing cannibalisation of their very lucrative business products. Upload speed is a much bigger differentiator for corporate, and that low upload speed keeps them on much more expensive alternate technologies.
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This.. It's all about protecting other more costly products. There is network contention issues and of course service provider contention issues to deal with but in the case of VDSL is undoubtably protection. If it offered more a symmetric service, I'm sure big SMEs and corporates with remote offices would unload their MPLS/VPN over fibre services if they could Triple speed for less..

ADSL on the other hand is designed for high speed downloads with a narrower band for uploads
 
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Jan said:
While the tech/standards choices are certainly a big reason, that doesn't answer the question of why 2Mbps and 4Mbps ADSL users only get a max of 512kbps up when they could just as well be given the maximum their lines could handle, and why 20Mbps VDSL subscribers don't just get 3Mbps upstream (maximum) like 40Mbps subscribers do.
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Huh? Both my old place (4 meg) and my parents place (2 meg) had 1024 up?
 
Jan said:
While the tech/standards choices are certainly a big reason, that doesn't answer the question of why 2Mbps and 4Mbps ADSL users only get a max of 512kbps up when they could just as well be given the maximum their lines could handle, and why 20Mbps VDSL subscribers don't just get 3Mbps upstream (maximum) like 40Mbps subscribers do.
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Huh? Both my old place (4 meg) and my parents place (2 meg) had 1024 up?
 
This is why it's so important to have a good router that implements Quality of Service (QOS) like a Mikrotik router.

By the way, when is Laurie going to sort out those gnashers? He must have made enough bucks by now to afford a good orthodontist.
 
Because Telkom's other expensive services like diginet would become dinosaurs. Who would pay R5k+ for a 1Meg diginet circuit when you could have a 4Meg up/down Adsl line fo way cheaper
 
HavocXphere said:
Huh? Both my old place (4 meg) and my parents place (2 meg) had 1024 up?
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i remember when i was on 4meg, i was once able to bump up mu upload speed to 1meg. then they bumped it down to 640k and back to 512k.
 
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