I have been using MTNL TriBand for the past 3-4 months. My plan is 590NU. Initially the connection was working ok, but for the past few weeks I have started facing a peculiar problem. When I switch on the modem, all the indicators light up except the ADSL light, which remains off. I have a normal telephone instrument connected to the splitter; the moment I pick up the phone handset, the ADSL indicator comes on, and after about 3 minutes, my net connection is established. The connection keeps working as long as I keep the phone off-hook. The moment I put the handset back, I loose internet connection and the ADSL light goes off! Nowadays, I always keep the phone off hook to use broadband. It is like going back in time when people had to keep their phones engaged to use dial-up internet; though I am using a broadband connection, my phone remains engaged! I have tried talking to their (useless) call centre people, but no one has been able to give me a valid technical reason for the problem, or suggest any remedy. One person even sugested me to change the splitter! I have tried connecting the telephone line directly to the modem, bypassing the splitter, but in that case I dont get any connectivity at all. My modem is UT-300R2U. I am using PPPoE.Thanks for any help from anyone.