I am on the Speed 500 plus plan in Bangalore - with 256kbps / 1GB per month. The speed that I get on average ranges from 23-28 kBps which is not so good but not so bad.But I have another unique observation - if I check thru DU Meter, the speed varies from 30kbps to 300kbps and follows a see-saw curve - i.e. it rises to around 300kbps and falls to 30-40kbps and then again rises. This cycle goes on every 3-5 seconds.Other times the variation may be less but the end result is that the variation is exists in speed and consquently I do not get good quality on skype, dialpad or other conference calls resulting in poor voice quality and/or disconnections.The airtel engineers have tried to change the copper, modem, splitter with no result and now are not responding at all.Is this expected for Airtel (I have used MTNL and know that it is not a feature of braoadband)... should I live with it?Help and opinions Requested.