If you are talking about Download speeds as against available bandwidth, IHi,
Does this mean if I go for a 2Mbps line for my business then also i will get the 30-80 kbps
guess you are making a very small mistake with your calculations. When an ISP
gives you a 256K connection, they are giving you a 256 kilobits per
second(Kbps) connection = 32 KBps(Kilo Bytes per second) 8bits=1 Byte,
remember?? There isnt anything wrong with the connection..Not as of now at
least.
There are others on the list, who would disagree with 8b = 1B. Why ? Because Andrew Tannenbaum says so.......they are of the view that 10b=1B as per the popular author. Indians are known for their strong (blind) believes and faiths ;)
Well it is a different thing that the same author talks about his experience with serial connections where start and stop bits are relevant i.e. 8+2 = 10 (2 bits are signalling overhead) and the same are not relevant in case of other media types like DSL / ISDN etc. As an example when we use 2 channels on ISDN we mention 128kilobits/sec but actually it is 144kilobits the remaining 16kilobits is for signalling.
256kilobits is the bare channel payload i.e. when spoken in bytes, the bare channel payload is 256 / 8 = 32 Kilobytes. Now each IP packet will have its overhead, which comes to around 11% to 12% in general i.e. actual data will be about 28 Kilobytes (as shown by an Internet Explorer download or FTP download).
We need to understand the speeds being measured at different levels of the Network stack ....... physical , datalink , network layer.........application and the resulting overheads being stripped off. As the complete packet with all layer overheads enters the bare pipe only upto the capacity offered by the pipe and occupies the full space. On reaching the destination the same packet is stripped off the headers as it climbs through the respective layers till we see the application layer data, now we as users generally do not tend to look below the application layer and therefore we get confused and misguided.
or it will increase to somewhat around 120-300 kbps
and for this speed paying the cost of 2MBPS line , that is a sham!!You should get speeds close to 256KBps. And if you look at it logically by way
of the above calculation, it isnt a sham. It is actually pretty good..
Wait there is a catch, the 2Megabits may not be 2Megabits. There are options of compression which when enabled to lower per month rental can make the 2Megabits to a trickle of 128kilobits i.e. a compression of 1:16 especially at peak hours. Becareful of what you choose as tariff.
with Regards, ASHWIN
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