In a major relief to the telecom industry, laden with high debt, the Reserve Bank of India (RBI) has given its green signal to the proposal to mortgage spectrum. This will enable telecom companies to raise money from financial lending institutions. However, the finance ministry has said in a letter to Telecom Secretary R Chandrashekhar that the proposal, first mooted by the Telecom Regulatory Authority of India (Trai) this year and having in-principle approval of the Telecom Commission, the highest decision-making body of the Department of Telecommunications (DoT), is subject to fulfilment of certain conditions.