Subscribers, however, will have to keep in mind that the register will be updated once a month. If you register yourself after August 30, your request will be implemented on September 30 and so on.

Any telemarketer found making calls to those phones registered in the NDCR would be fined Rs 1,000 for the first violation and if repeated, the number from which the pesky call was made would be disconnected, he said.

The Bench said getting a phone connection is so easy these days that the threat of disconnection might not be deterrent enough.

It also felt that the fine of Rs 1,000 was too low and suggested that the government could follow a provision similar to the one in the US where the fine per unsolicited call is around $1,000. COAI told the court that the NDCR scheme was framed by TRAI following an apex court initiative on a PIL filed by Harsh Pathak, who had termed unsolicited calls as a violation of the right to privacy guaranteed under Article 21 of the Constitution.

The court asked the Centre to file an affidavit in four weeks' detailing the working of the NDCR and fixed further hearing on the PIL for September 21.