The Enforcement Directorate has slapped various charges of FEMA violations against top telecom firms allegedly involved in the 2G spectrum scam. The firms include Swan Telecom, Loop Mobile, Loop Telecom and S-Tel and the violations amounted to the tune of over 4,300 crore rupeesl. The Directorate in its complaint filed before the Competent Adjudicating Authority for FEMA violations today said it is also probing suspected contravention of forex rules in Virgin Mobile, a joint venture of Tata group. It has charged Shahid Balwa-promoted Swan Telecom, with committing FEMA contraventions to the tune of 3,608 crore rupees. The Directorate said the violation was done by the company in issuing shares to foreign investor and resident investor under an agreement and had issued shares to foreign investor on an abnormal value to avoid the permission of Foreign Investment Promotion Board. In the case of Loop Mobile India Limited based in Mumbai, the Enforcement Direcorate alleged FEMA contravention to a total amount of 431 crore rupees. The Directorate says, it is also analysing the pricing issue of shares between Unitech and Telenor.