"BSNL broadband is a shared connection" doesn't mean that we
always get low speeds . no doubt the speed varies but you need
not worry about it unless you are a heavy (torrents) downloader
What is contention or a contention ratio?
To provide a cost effective service - all
ADSL services are contended (shared).
These contention ratios are applied in the backbone and international part of
the network. A commonly applied contention rate is 50 : 1. All customers are
guaranteed the plan rate up to the local exchange or the ADSL equipment to
which they are connected. On the shared part of the network a 50:1 contention
ratio would mean that a 2 Mbps connection would be shared by 49 others.
In reality this is very unlikely to happen and the customer would find the connection
much faster than dial-up modems. 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 due to the contention ratio
but also to many other factors including the congestion at the remote site you are
accessing.