Help needed: math model of Telkom ADSL

The contention ratio doesn't influence the cost of the provisioning or maintenance of the line from the customer premise to the exchange or the DSLAM port cost. However, it does have a cost effect on the ATM backbone costs. Let's assume all users are on a 512Kb line. On a 1:1 contention ratio, Telkom would have to provision 512Kb bandwidth on their ATM backbone for each user. On a 1:20 contention ratio, they only have to provision 512Kb for every 20 users. I don't know if that makes sense.
 
But also remember they detirmine the price of the 64k line and the isp, and we know thats over-priced. So in effect they pay way less than what you suggested.

Back to the topic, it looks like April 2005 there were around 60000 subscribers.
I still want to know when the service was first rolled out (its the most important point in the graph)
 
BLaZor said:
So telkom are money making frauds.
If you pay for a 512kb connection, you /have to get THAT connection.
otherwise its cheating, but were talking about telkom here.
I say we should have a protest.
Off the topic here- ONe good thing for bin-laden, He should have crashed into the telkom head office instead of the towers:D
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Off Topic: Well not entirely; If all 50 512kb/s ADSL users tried to use that 10mb/s pipe there will be slowdown.

Telkom CAN guarantee a minimum download speed, if they calculated the ratio's correctly. In Canada a friend of mine has a 1.5mb line, if that line drops below a 1/3 of the download speed, they first do a test to see if it's the their problem or the server they downloading from. If its their problem, they give that person their next month access, free of charge.
 
Well this thread is now more about connection ratios than about what I created it for...
 
Ah yes, im using Freedom to surf up here and getting 2mbit connection.
My granny in S.a uses the 512kb BB, but whenever i try to chat to her, she breaks up.
Im coming back down for good to sort this problem but Telkom didnt give her free of charge, and they wanted us to go to court?
 
Alkine said:
Well this thread is now more about connection ratios than about what I created it for...
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Alkine while your aim seems noble, I dont understand what you believe you can achieve by graphing a thumbsuck of Telkom's revenues for ADSL since inception of the service? I say thumbsuck since there are many variables you will not know e.g. distribution of products sold between Bus512 Home512, Home384 & Home192.

Even if you get a ballpark figure for revenue, its pretty meaningless if you cant calculate the associated cost of providing the ADSL service. Here there are many, many more complex variables for which you will not find the answers in these forums.

Without accurate revenue & cost figures, you cannot calculate a meaningful profit estimate and therefore cant answer the question of 'How much is Telkom ripping us off'.
 
Roman, alkine was asking us the rough amount not the actaull profit.
That would take 3months to figure out!
 
BLaZor said:
Roman, alkine was asking us the rough amount not the actaull profit.
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Again I ask for what purpose ... unless just to stimulate interesting discussion/speculation.
 
Roman4604 said:
Alkine while your aim seems noble, I dont understand what you believe you can achieve by graphing a thumbsuck of Telkom's revenues for ADSL since inception of the service? I say thumbsuck since there are many variables you will not know e.g. distribution of products sold between Bus512 Home512, Home384 & Home192.

Without accurate revenue & cost figures, you cannot calculate a meaningful profit estimate and therefore cant answer the question of 'How much is Telkom ripping us off'.
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blah blah blah...alkine i say do make the graph..lets c what the round +- amount that telkom r getting from all of us...
even if u dont inclued the Bus512,every know telkoms is getting more money then.

i think Alkine just wants 2 get average figures...not real ones.for that u mays well go and knock on telkom doors.Hey i here 2 the adsl audit of cost/profit margins.
 
It is my impression that all this myADSL+ICASA vs. Telkom activity/enthusiasm is to force Telkom into meaningfull change re. ADSL service perf. & pricing.

If all we can come up with is "blah blah blah" & "average figures...not real ones" then this will give Telkom all the ammunition they need to label us (myADSL & its forum members) "poephols" and laugh us off.
 
They have to connect all the dslams together, so they need to run local loop cables to each one, with the cost of routers, etc as well as maintance on coper eg, there cost is around R 200 per 64k of bandwidth to each dslam
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I'm curious where you get the figure of R200/64Kbit. This sounds massively high to me. As far as I am aware the DSLAMs simply sit in your local exchange and connect via the ATM network, which delivers a 135 Mbit/s payload on a single link (normally fiber channel). Yes there are some hardware costs (routers) and the cost of cabling but I'd be very surprised if it worked out as high as R200/64Kbit.
 
Roman4604 I want the figures for the amount of users according to date, and you will agree with me that the user base is going to grow exponentially until market saturation is reached. I want to predict / play with the numbers and see what the possible total amount of ADSL users might be in say a year’s time. This has no link to the ICASA findings whatsoever. A possible assumption that we can get from the graph is how much money telkom received from the total ADSL user base to date, and again that just so we can look at it and say: "ooh interesting".

On the figures I do not know, there is something called an engineers approximation, before December last year there was no ADSL 384k or 192k and we can thus assume that the average price for the ADSL laid between the business and home DSL prices. How much to either side is another value we can play with. After the introduction of those services business users are still only able to get the 512k option and we can take the amount of users at that date as a minimum value for the 512k uses although they would also certainly grow.

I’m sure that the recent growth of the ADSL user base is because of the introduction of the slower speed lines and it will be taken into account.

The thing with a mathematical model like this is it will only help you to guess more accurately than before, it’s still guessing.
 
rate they wont laugh it off..if u stir the pot enough, change will happen.
if have have't seen already by the stir that is.that the share price have dropped a little by 0.6%.hopefully will drop more.
 
The maths on the 64k segments is quite simple.

Based on what Telkom charges for line rental to a normal customer of R 1750 per 64k of unpopulated diginet, It costs telkom a fee of R 200 per 64k, You must remeber that there are some issues to bandwidth between two points.

1. There are routers, bridges, repeaters etc that have a ROI as well as a replacment fee etc.

2. Telkom use Cisco as there backbone, giving the rise to cost as well.

3. The copper need to be replaced based on theft, and degredation.

4. The ATM is not quite a simple as it seems, there are massive amounts of time, spent on mamnagment of the ATM network, remember it carries the SAT3 bandwidth as well.

5. there are interconnection fees, namley frame-relay to ATM etc. This is the in fightinh between SAIX and Telkom lol yes they do, diffrent cost centers etc.
 
2 Alkine

While I'm still battling to understand the value of your exercise, if its of interest to you and other forum members, I say go for it.

2 Others believing the R200/64K figure

I have no idea where this figure comes from ... 64K of bandwidth where?

DSLAM to ESR
ESR to S.A. international distribution router
Capacity on SAT3
US/UK international router to interconnect partner

Which one or all of the above?
 
Hi,

This is not relevant but does any one have a Matlab simulation of ADSL, I have to do a project on it and need some help asap.

Thanks,
Faz.
 
What kind of simulation do you need? What aspect of ADSL do you want to simulate? (eg users, traffic, technology)
 
I basically have to simulate ADSL over Copper and Fiber using DMT to measure the tranmission quality, I have to show the Modulation of the carrier, First and Last channels of Upstream and Downstrem and a few adjacent channels in between and also define parameters like SNR, Bit Error rate, Loss, Interference etc.

Any ADSL or VDSL Model in Matlab would be helpful.

Thanks,
Faz.
 
I'm sorry to say that I can't help you in that area, what I intend to do is very basic compared to what you are asking. Just for intrest sake whats your profession? are you currently studying and where?
 
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