Thanks Mr.Sivasankar Chander for ur reply regrading the speed of dialup
modem.......
but also see what ans Mr.Suraj has given to this question......
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When you buy a '56KBPS' modem, what you are buying is a 'modem that
can do 56000 bauds per second' and NOT a 'modem that can do 56 x 1024
bits per second' (and certainly not '56 kilo bytes'). so in the modem
parlance, the KBPS stands for 'kilo bauds per second'.
one baud == one 'pulse' (ie.,. one bit). so if you have a 56K modem it
means it can send 56000 bauds in one second (note that the 'k' here is
not 56 x 1024 but 56 x 1000. (its the electrical equivalent and not
the computerese equivalent)). that means 56000 bits are sent...
ie...
56000 / 8 = 7000 bytes
7000 / 1024 == 6.8 KB (Kilo Bytes where 1 kilo byte = 1024 bits)
now, does that explain why your download never crosses 6.8KB/s? :)
and another thing... download accelerator is nothing but a program
that spawns multiple processes (or threads) that downloads various
segments of the same file at the same time. It does not do any other
magic to increase the "speed". What it really does it have as many
requests on the server from which it is downloading.
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This has nothing to do with your modem, and everything to do with the
upstream bandwidth of your ISP. The upstream bandwidth is shared among
all the active connections of the modem pool, so if there are (say) 400
users who are connected, and an upstream bandwidth of 2 Mbits/sec (typical
in India), the average bandwidth that each user will obtain will be about
5 kbits/sec.
increase the upstream bandwidth, or switch your ISP to one that has
adequate core (backbone) bandwidth.
of the explanation above won't make sense to you.
?????????
I have a question regarding the download speeds of dialup modems
i am using a dial up modem and it connects to the net @ around 48 kbps ,why
cannt we use the full bandwith or atleast half of it around 20 kbps forto
downloading files , files r downloaded @ the rate of around 5kbps ,( even
after using download accelarators it is around 6 kbps ) is it possible
use atleast half of the bandwith for use , why is thisrestriction..........
