Crystal Web ADSL performance feedback thread Part 3...

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TheBossMan said:
Not sure if my daily usage emails is correct "Free hours" only from 6pm till midnight?

Been a bit busy with work stuff have not actually been able to use my net too much this week, just want to know when to schedule my downloads.

Edit: From reading new_in_za2 post above not sure if my usage is also reflecting correctly, most of my downloads this week has been left on in the mornings before work, will monitor it from next week when I won't be too busy with work stuff.


DSL Usage:
Total Sent(MB): 569.99
Total Received(MB): 12706.60
Total Combined (MB): 13276.59
Comment: 5GB used -- 18h00-00h00 Cap -- 250GB

KEY:
1 Megabyte (MB) = 1048576 bytes (B)
1 Gigabyte (GB) = 1024 Megabytes (MB)
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Eh! States clearly there - 5GB used between 18h00 - 00h00 <--- Cap 250 - so you have 245 left of your cap.
 
Uhm, is XTTH not available to folk who live in apartments? Went through the whole registration form and the "home structure" section suggests you need to live in a house or a duplex?...
 
Lydon said:
Uhm, is XTTH not available to folk who live in apartments? Went through the whole registration form and the "home structure" section suggests you need to live in a house or a duplex?...
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I find the description of this service rather incomplete and vague as to how it works or will work.

I know a bit about what technologies are being referred to for use in the E- and V-band but wonder why this was used to describe the proposed service.

Dangling a carrot that still has to mature??
 
daniellgr said:
I find the description of this service rather incomplete and vague as to how it works or will work.

I know a bit about what technologies are being referred to for use in the E- and V-band but wonder why this was used to describe the proposed service.

Dangling a carrot that still has to mature??
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Tell us more please? Plain english not technobabble asseblief :D
 
Here is a reasonably simple explanation of the technology and how it works ( especially the first few slides).

One of the issues about any radio technology is that most work best when there is full Line Of Site between the transmitting antenna and the receiving antenna.

MIMO (and its variants, SIMO, etc) exploit the fact that radio signals will bounce off buildings, trees and other objects via multiple paths. The multi-path signals appear as noise in more traditional technologies. MIMO exploits multi-path signals, leading to the claim that LOS is not required anymore. But over the years ( the technology first showed up in research papers way back in the late nineties), all sorts of other benefits have identified, including better spectrum utilisation and or improved data throughput.

The CSIR locally developed a test network which has very successfully being delivering Internet access in a number of rural areas for quite a long time.

The antenna technology can be used in just about any radio band. There are however issues with its indiscriminate deployment as the technology can adversely affect existing services in a band.

Hence, why I would hope that CW would be a little more open about what frequency bands they propose to use. The terms E- and V- band are just too open to incorrect interpretation.
http://cdn.mobiusconsulting.com/papers/IEEE-Wireless-MIMO-Sharony.pdf

There may be better references around but this is the one I have readily at hand based on some work I did way back in 2005/2006 on the concept.

More .....

The big drawback of all these wireless technologies ( recently highlighted in Brian Armstrong's presentation at the myBB conference) is that a high capacity backhaul network, very close to the end user is required. Attempts to get this to work over large areas have not shown anywhere near the returns claimed, be they technical or commercial.

So with the advent of FTTC, FTTB and FTTH, the fibre networks are now available to feed "base stations" very close to the end user, thus "solving" the backhaul problem. BUT the technology requires a minimum of "X" points which can be used to establish a mesh of nodes.

I am a bit concerned that the idea is that you can use a FTTH technology such as GPON to act as the backhaul ??? But AON might be feasible? Certainly Metro E will work. And immediately, one can see where the 100 Mbps limit is coming from even if the last inch technology can achieve better, it will be limited by the backhaul available.

( The age old problem of contention on top of more contention)

Latency? Now that is going to be interesting because the systems I was involved in 2006 introduced a sizeable dose of added latency. Suitable for gamers ??? Maybe not is my call.

But to be used to "extend" the range of a FTTH deployment with a last inch wireless and "normal" Internet access? Will work okay.

I would like to see some tests first before just falling for this idea, knowing what the CSIR found out in their trials.
 
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Waiting to see how this goes 1st ie XTTH

Dont want to jump in, and then it doesn't work great
 
Icemanbrfc said:
Waiting to see how this goes 1st ie XTTH

Dont want to jump in, and then it doesn't work great
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CW's carrot about their XTTH sounds nice, but without more information on how, what, where and when, it is not worth the extra effort to get something you don't have the technical specs of how they plan to make it work.
 
snail112 said:
CW's carrot about their XTTH sounds nice, but without more information on how, what, where and when, it is not worth the extra effort to get something you don't have the technical specs of how they plan to make it work.
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I see that they are offering the (I presume no penalty) option of a rollback to ADSL if you're not happy with the offering
 
snail112 said:
CW's carrot about their XTTH sounds nice, but without more information on how, what, where and when, it is not worth the extra effort to get something you don't have the technical specs of how they plan to make it work.
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Yeah I really would like to have more details on this, it does seem like it will be a breath of fresh air for all of us that have terrible Telkom infrastructure as well as not being on any of the standard fibre routes from other providers. I hope all of this hype leads to a great new product which eliminates the need for Telkom in many households.
 
Latency not good tonight. Had several GTA Online lobbies empty on me.
 
Flawless weekend again.

I'm really getting comfortable with this uncapped from 00:00 till 18:00 things...especially over weekends :D

I really hope this remains in place post for a loooooooong time :)
 
Orihalcon said:
Flawless weekend again.

I'm really getting comfortable with this uncapped from 00:00 till 18:00 things...especially over weekends :D

I really hope this remains in place post for a loooooooong time :)
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And you are in Durbanville not far from me at all! Don't understand why for some of us its gotten so much worse since the new accounts came online and for others after the initial hiccups its been perfect !?!?

Even changed to business uncapped and while its better its still not the old home capped account.
 
Did Crystal Web just die for anyone else, or have they just decided to finally block my account?

Edit: Support confirms it's a problem on their end.
 
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Data connectivity down
Incident Report for Crystal Web
Investigating
Crystal Web is investigating a major service disruption affecting all DSL and Fibre customers across all infrastructure. Clients are unable to connect to the internet as a result. We will keep you updated.
Nov 7, 15:40 SAST
 
An Incident Update Has Been Posted
The technical fault has been isolated to the Gauteng region. Further updates to follow.
Nov 7, 15:44 SAST
 
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