Besides, the successful bidding operators will be allowed to avail ECB raised by their parent company without any maximum ECB liability-equity ratio. In 2010, the government had allowed a window of 12 months to the successful bidders of 3G auction to refinance the rupee loans. The Reserve Bank of India is expected to issue relevant circular to this effect within a week, the statement added. Auction for 2G spectrum is slated to be held on November 12. Yesterday, the Cabinet had cleared a proposal to impose a one-time charge on incumbent GSM operators' spectrum beyond 4.4 MHz. According to the Department of Telecom calculation, operators including Bharti Airtel, Vodafone, Aircel, Idea Cellular and the state-owned BSNL and MTNL would have to fork out Rs 24,989 crore for this purpose. However, nearly half the burden (Rs 11,573 crore) will have to be borne by the government telecom operators. The Cabinet had, however, deferred a decision in this respect on CDMA operators.