Radia, whose tapped phone conversations with politicians, corporates, bureaucrats, and journalists, form a key part of the investigations into the 2G spectrum scam, appeared before the PAC at the Parliament House complex here.
The panel, headed by senior BJP leader Murli Manohar Joshi, is understood to have sought clarifications from her on the tapped conversations which include allegations of trying to influence portfolio allocation to ministers in the UPA-II government.
In the calls, Radia, chairperson of Vaishnavi Corporate Communications, is allegedly heard making efforts to ensure that DMK leader A Raja gets the Telecom portfolio. Raja is now in jail in connection with the 2G spectrum allocation scam.
Tata Sons Chairman Ratan Tata is scheduled to appear before the PAC at 3 PM.
The PAC is expected to record the evidence of Tata on the recent developments in the telecom sector, including allocation of 2G and 3G spectrum.
On Tuesday, the PAC had asked Reliance Communications Chairman Anil Ambani, Etisalat DB Telecom CEO Atul Jham, S-Tel CEO Shamik Das and Unitech Wireless Managing Director Sigve Brekke to appear before it.