700 Mbps DSL possible with SuperMIMO technology

When we finally get 700 Meg here... we will still be shaped to 32kb a second
 
getafix33 said:
And here in sunny SA we still consider 384kb broadband
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+1

The countries that are developing well and steady(like singapore, kenya) are the countries that are pushing technology by upgrading everything that is telecommunication. I don't see how this damn Government doesn't see the relation. More technical your citizens, the richer your country will get!
 
VioAdmin said:
+1

The countries that are developing well and steady(like singapore, kenya) are the countries that are pushing technology by upgrading everything that is telecommunication. I don't see how this damn Government doesn't see the relation. More technical your citizens, the richer your country will get!
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Thier logic is "If it works and brings in enough money,its good enough"
 
You guys are all missing a crucial point. With ALL DSL technologies, the max line speed you can get is completely dependant on the distance you are from the DSLAM/exchange. Though there are other factors that need to be taken into account, distance is the most important.

For this 700mbps DSL line, you need to be at most 400m away from the exchange. This probably rules out 97% of the South African population. I'm sure at a distance of 200m from the exchange, they could develop a technology that delivers over 1gbps, and at a distance of 50m, they could push this even further. So distance is the primary factor.

At 400m, it is just not worth it for operators to deploy. They'd have to install Mini-DSLAMs on every 3rd or 4th street, and deploy fibre to each mini-DSLAM. Now compare this to the current situation in RSA of a single exchange serving an entire town or suburb. There are only a select few suburbs in upper class areas that actually have mini DSLAMs installed on the streets.

You will also require newer more specialised DSL modems, and these will not come cheap.

In my opinion, this is a waste of time. Operators should rather invest in all-out pure fibre networks, rather than waste money trying to squeeze every last drop out of the frail copper infrastructure.
 
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i remember the days of dialup when we where told that copper wire could never handle more than 96kbps .
 
iCubed.Saajid said:
You guys are all missing a crucial point. With ALL DSL technologies, the max line speed you can get is completely dependant on the distance you are from the DSLAM/exchange. Though there are other factors that need to be taken into account, distance is the most important.

For this 700mbps DSL line, you need to be at most 400m away from the exchange. This probably rules out 97% of the South African population. I'm sure at a distance of 200m from the exchange, they could develop a technology that delivers over 1gbps, and at a distance of 50m, they could push this even further. So distance is the primary factor.

At 400m, it is just not worth it for operators to deploy. They'd have to install Mini-DSLAMs on every 3rd or 4th street, and deploy fibre to each mini-DSLAM. Now compare this to the current situation in RSA of a single exchange serving an entire town or suburb. There are only a select few suburbs in upper class areas that actually have mini DSLAMs installed on the streets.

You will also require newer more specialised DSL modems, and these will not come cheap.

In my opinion, this is a waste of time. Operators should rather invest in all-out pure fibre networks, rather than waste money trying to squeeze every last drop out of the frail copper infrastructure.
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You do realise that this is probably meant for metropolitan areas, where the population density is high and everybody is on top of each other aka a city center?
 
Agreed with iCubed.Saajid, above. This makes no economic sense. It's 4 phone lines and a DSLAM within 400m. At this sort of capex, fibre starts looking damn cheap.
 
XennoX said:
You do realise that this is probably meant for metropolitan areas, where the population density is high and everybody is on top of each other aka a city center?
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At this sort of density is Metro Ethernet not a better option?
 
Tomtomtom said:
At this sort of density is Metro Ethernet not a better option?
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He means the hi-rise flats, that may easily exceed Ethernet's (copper) 100m range easily and placing industrial-grade on every floor/sector won't be affordable. For example, look at this building, but this makes a little sense with FTTF (Fibre-To-The-Flat), unless for economic reasons...
It has some use in buildings with older planning/historic that places limits on drilling holes in walls (or even touching), but have phone lines (when built or upgraded back in...)
 
SuperMIMO technology uses four twisted pairs to achieve a downstream rate of 700Mbps at a distance of 400 meters.
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Uhm, that's just fantastic... A normal telephone line uses 1 twisted pair. If you think about it, consider bonding 4 x 24Mbps ADSL2+ modems (ie 4 twisted pairs) - you'd ideally get ~96Mbps. They've basically multiplied the physically attainable rate by 7 - which is greaaaaatt, but it depends on the telco being able to supply you with another 3 copper pairs just for your 1 line... Forget about that happening here in SA - Telkom have virtually ABANDONED attempts to guarentee a SINGLE twisted copper pair to their customers... it would cost a fortune anyway.

But that's just the ideal increase in speed... what about better performance at longer distances / lower SNR, etc? Perhaps this would be a breakthrough if the 700Mbps was achievable at over 1 km? the majority of customers are far beyond 400 meters from the DSLAM - My guess for average distance from exchange in SA is at least around 2km?

Let's not even talk about the required backaul core network upgrades to cater for the technology... many Telkom exchanges are oversubscribed and can't guarentee a good contention ratio / valued service, even where their maximum profiles are only 4Mbps. Imagine each customer being able to pull up to 700Mbps? Maybe after 2012, we'd have enough International bandwidth through all the new submarine cables, but Telkom would then be the bottleneck unless local loop unbundling happens, and the last mile rapidly ends up turning the right way - an unlikely prospect IMHO lol

But I guess it's still fun to dream and hypothesise about ideals - new technology is fun after all .. xD =p
 
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