[MENTION=149723]gta0gagan[/MENTION],i disagree about modulation.in my area there is no G.dmt modulation & no matter how far away one is from the exchange in my area forcefully selecting G.dmt will result in no ADSL link.best option is to set ADSL mode as Auto Sync & let the local exchange & modem decide what modulation to follow.same is the case with MTU.there is no one universally correct value & so it is best to follow the procedure to determine which MTU value is right for you.
in command prompt window type:
ping -f -l value www.abc.xyz where value is the MTU value(in your modem/router)-28 which is normally 1492-28=1464 & abc.xyz is any site,i use google.
now start reducing value by 1 until you get a proper result like "Reply from XX.XXX.XX.XXX: bytes= ______ time & not "Packets need to be fragmented..."