DND is Do Not Disturb. It is a feature, to block the Unwanted commericial calls. This is DND facility is accessible from all telecom Operators by unsing the number 1909 . Once a mobile phone user/Land line user register his number at DND database for blocking, he will not get any commericial telemarking calls/SMS. This service is mainly to block unwanted Calls/SMS from Telemarketers.
The service is provided by Telecom Regulatory Authority of India (TRAI). TRAI is the Indian governmental agency tasked with defining various policies and regulations for wireless communication service providers in India. As per TRAI regulation, every mobile service provider in India is required to set up a Do Not Disturb (DND) registry. All telecom wireless or wiredline service provider should allow 1909 .
If you say yes, this is for you. Mobile phone users who want to register their phone number for Do not call registry may dial 1909 or SMS to 1909 with keywords START 0 for registration and STOP DND for de-registration.
No. All the telecom operators should allow 1909 service as tollfree. Both SMS and Calling to 1909 is not going to be charged
After all, with above procedure if you completed DND Activation/Deactivation. And If you want to check, is your mobile number successfully registered as per your request, check the status of your mobile number here.