I think when we install telehone services, we and telepehone services providing industry signa a contract that they will provide us telephone services and i think it gets covered u/s 194C and as far as other taxes are concern there are many things on which we pay service tax also and are also liable to deduct TDS like rent , etc. So can anybody please clarify that against which notification or anything such like thing relying on which we should not deduct TDS on such service.