AFP/New DelhiA former government minister went on trial amid chaotic scenes yesterday, accused of playing a central role in a massive corruption scandal over the allocation of mobile phone licences.A Raja, who was telecom minister from 2007 to 2010, is the key figure in a case that has rocked Prime Minister Manmohan Singh’s administration and helped make corruption one of the country’s hottest political issues.The sale of second-generation (2G) licences at far below their commercial rate to selected companies could have cost the treasury up to $40bn in lost revenue, according to the public auditor. Raja, wearing a white shirt, appeared alongside the other 13 defendants from the senior ranks of telecom companies and the bureaucracy who face charges including criminal breach of trust, bribery, forgery and cheating. Proceedings began with lawyers arguing that the tiny courtroom chosen for one of the biggest trials in recent years was unsuitable, as defendants’ family members, journalists and an army of lawyers crammed into the small space.“We can’t hear what the witnesses are saying,” complained defence lawyer Majeed Memon. “The administrators of the court should do something about providing better ventilation and seating facilities. “How can you conduct such an important trial in such a shabby manner?” he told the court. After hearing the complaints, the judge called the first prosecution witness, Anand Subramaniam from Reliance Capital, part of the group owned by billionaire Anil Ambani.Subramaniam was grilled by the prosecution lawyers for close to four hours before the second witness, A N Sethuraman, the group president of Reliance, was called for questioning. Raja appeared cheerful and relaxed throughout, occasionally smiling while chatting with his co-defendants.The prosecution is likely to focus on accusations that when allocating the licences Raja favoured Swan Telecom, alleged to be a front for Ambani’s Reliance group, and another company called Unitech Wireless.“We will focus on the in corporation (of Swan), and then on the events that unfolded in the department of telecommunication. In the later stages, the trial will focus on beneficiaries of the scam,” a prosecution source said.Raja, a member of the DMK, a key regional party in the Congress party-led coalition, is suspected of rigging rules over the sale of 2G mobile licences in 2008 to favour some firms in return for kickbacks.Others accused of wrongdoing include Kanimozhi - the daughter of DMK chief M Karunanidhi - plus senior telecom executives and government officials. Kanimozhi, seated next to her husband in the court room, was seen flipping through the pages of a book titled ‘Judicial Activism in India’.