Vodafone Idea has secured a major legal victory. Bombay High Court quashed demand notices issued by the Department of Telecommunications (DoT) seeking one-time spectrum charges (OTSC) worth Rs 2,113 crore. Vodafone Idea in its regulatory filing said that the court has directed the DoT to return the bank guarantees submitted by the company against the disputed demand. The Bombay High Court on Monday quashed the Centre’s 2012 decision to impose a one-time spectrum charge for spectrum held above 6.2 MHz from 2008 onwards, questioning its source of power to make such a call.