A Delhi court on Wednesday issued summons to country''s three telecom majors Bharti Airtel, Idea Cellular and Loop Mobiles and their top officials for allegedly violating the TRAI regulations on mobile number portability.

The court has directed Bharti Airtel's CEO Sanjay Kapoor, its Director (Legal and Regulatory Affairs) Jyoti Pawar and Vice-President (Head and Regulatory Affairs, Mobile Services) Ashwani Rana and Loop Mobiles (India) Ltd Managing Director Sandip Basu and Chief Regulatory Officer Harish Kapoor to appear before Chief Metropolitan Magistrate Vinod Yadav on May 25.

"In my considered opinion, there is enough material on record to proceed against the accused persons for offence punishable under section 29 of Trai Act for violation of Regulation 12 of the Telecommunication Mobile Number Portability Regulations. Let accused persons be summoned," the judge said. 

The court has issued summons against them on a complaint by the Telecom Regulatory Authority of India (TRAI) for alleged violation of its regulations on mobile number portability.

In its petition TRAI said after it launched mobile number portability in January 2011, it had directed all service providers including Bharti Airtel, Idea and Loop Mobiles to furnish compliance of various provisions of the Telecom Portability Regulations. However, when the telecom regulator ascertained the correctness of compliance (for number portability) by the three firms and obtained data pertaining to porting requests (to them) for a given period, it found certain requests had been illegally rejected, Trai's counsel Saket Singh told the court.