Say: You don't have Broadband connection.Then when you lift the Handset , there is no Dialtone.1.procedure is to check cables etc connected properly.2.Then ask your friend/neighbour to dial your number.3.If they say "ring " is going on but nobody lifts the phonethere is problem from Exchange Telephone Distribution Boxto your telephone.4. Or if you have a cell phone dial std code and your number.In cellphone you will hear the ring.Para two:5. Now you have BB connection also and it works !means the BB connection line is connected to a different equipment called Dslam. So Problem is at the ExchangeTelephone end.6. Because if Telephone does not work, we cannot conclude BB also will not work.7. I tried to give BB connection in another room , and the moment Modem was connected my other three telephones all went dead. I tried different wires etc but appears, the line is overloaded. But BB connection worked alright.8. If you don't get Dialtone nothing can be done, exceptregister complaint to BSNL from another telephone/(cellphone?).for computerised Fault registration, 9. There is a BSNL number (1962 ????) when dialed, and you keepthe handset in cradle will give ring in your telephone.Hope I could make the matter clear.