In message <[log in to unmask]>, Nemo Semret writes:
> El wrote:
> > Actually, I fail to see the necessity of charging by by volume. The
> > radio link is probably semi permanent (comes up if either side has a
> > packet) or permanent (both recivers listen all the time for packets
> > sent to them). This is ideal to charge on a fixed cost basis.
> But there are reasons for volume (or usage) charges.
I can not agree more.
> The chief one being congestion. If the traffic that is being
> generated can exceed your bandwidth, then you may want some kind of
> (time-varying or market-based) usage prices to control demand, and
> ensure a reasonable quality of service. The congestion can occur at
> the IP layer (delayed and dropped packets) or the physical layer
> (radio interference), but it's essentially the same problem.
How can that be? The modems are analog ones and I reckon they do 2400
bps. You can not congest an ISP with that kind of speed. And, if you
congest you congest the radio link, in other words you congest
> If the radio link is not a bottleneck, then I would think usage prices
> are difficult to justify. Even less so if the prices are so high that
> they are stifling traffic to some level far below capacity.
> > Now what if (legalities aside) my ISP had a huge radio station set up
> > and I bought a radio/modem which I connected to my linux box, running
> > ppp to the other end hooked into a portmaster?
> > I'd not have to pay anything to TelCom. Just the monthly 800$US to the
> > ISP.
> Well, if there are enough ISPs doing the same thing (and granted that
> may be years down the road), the frequency spectrum will have to be
> explicitly allocated, and somehow the congestion cost has to be paid.
Come on, we are talking about places that are difficult to reach by
> > Again, I fail to see the inherent need to charge by packet.
> Inherently there is at a reason. But in practice, today, I don't
> imagine there's much congestion in the airwaves of Africa outside of
> the major cities.
There is a reason. Lack of competition for one.
One side effect of entrepreneuship (which USAID is o keen on
stimulating) is of course greed...
> How do these HF radio prices compare to cellular phone charges, when
> the two are being offered in the same geographic area?
Very good question, though I do not think they have cellullar phones
just yet there. And cell phones tolerate 2400pbs modems very well I
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