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BSNL Speed Problem (New Issue)

This is a discussion on BSNL Speed Problem (New Issue) within the BSNL broadband forums, part of the DSL Broadband Service Providers category; Shebin222, Before you go to the consumer court, Let me clarify you a technical fact about ADSL. BSNL broadband and ...


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Old 26-12-2007, 02:13 PM   #11
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Shebin222,

Before you go to the consumer court, Let me clarify you a technical fact about ADSL.

BSNL broadband and several broadband providers have a contention ratio. Its nothing but, in simple words, u share a bandwidht pipe with n number of users. Further, drilling down, For example, an ISP says that his contetnion ratio is 1:4 means that for any 256 or 512 or 1Mbps line, the bandwith is shared between 4 users at a connected time. It means that, IF a single user is logged in to the network in an exchange, and all the other users are not logged in, the 1st user enjoys the whole 256 or 512 Kbps bandwith alloted to him as per his plan. But if the other 2 or 3 users are connected to the network, the speed drastically comes down to the quarter of the total bandwith.

So, quarter of 256 Kbps is 64 Kbps. If it dreally goes down this speed limit, you are really in trouble..
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Old 26-12-2007, 02:26 PM   #12
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To provide a cost effective service - all ADSL services world-wide are ‘contended’ (shared). These contention ratios are applied in the backbone and international part of the network. In lay man's language it just means "How many people are fighting for the same internet connection line as you?". All customers are guaranteed the “Plan” rate up to the local exchange or the ADSL equipment to which they are connected. Contention begins at the connection from your local exchange to the ISP which is shared by other users.On the shared part of the network a 20:1 contention ratio would mean that a 256 kbps connection would be shared by you and a maximum of 19 others. In reality this is very unlikely to happen and the customer would find the connection much faster than dial-up modems. In actuallity the number of people sharing bandwidth is much more complex and it tends to be like say 3400 users with 512kbps ADSL connection sharing a 34Mbps connection, which means that a few users running at full speed have less of an effect on other users. ADSL relies on individual users not making unreasonable traffic demands on the network to provide fast access speeds for all. If you are not getting the speed you expect, it can be not only due to the contention ratio but also due to many other factors including the congestion at the remote site you are accessing.

Taken from BSNL Chennai Website

Maybe thats the reason u are experiencing slower speeds
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Old 30-12-2007, 10:24 PM   #13
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I dont think you can do anything about it..

Try using TATA Indicom Broadband till your local exchange upgrades to higher port quantity.
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Old 01-12-2008, 01:28 AM   #14
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Hello all

For the past one week i am getting very poor internet speed (70 kbps) from my dataone internet connection. iam on combo 500 plan and iam using D-Link glb502 modem. the poor speed is during the whole day. i have tried resetting the modem and that has not helped. Please help.
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