Country's largest telecom company Bharti Airtel today reported a 30.5% jump in its March quarter's net profit at Rs 1,255 crore, buoyed by a robust customer growth and rise in mobile data revenue.

The Sunil Bharti Mittal-led company had reported a net profit of Rs 962 crore for the corresponding period last year.

Total revenue of the firm rose 3.6% to Rs 23,016 crore for the reported quarter as compared with Rs 22,219 crore in the year-ago period, Airtel said in a statement.

The company said changes in inter-connect usage charges (IUC) prescribed by regulator TRAI, effective March 1, have led to drop in gross revenue by Rs 144.5 crore in the current quarter with a marginal impact on net revenues.

On yearly basis, the net profit soared 86.9% to Rs 5,183 crore for FY 2014-15 as compared with Rs 2,773 crore in the previous fiscal.

Total revenue for the entire 2014-15 fiscal rose 7.3% to Rs 92,039 crore as against Rs 85,746 crore in the preceding year.

Net debt of the company stood at Rs 66,841.7 crore at the end of March 2015.

The company said consolidated mobile data revenues for the March quarter at Rs 3,085 crore grew by 59.1% year-on-year(y-o-y), uplifted by higher data usage and robust customer growth.

Mobile data revenue for India though grew over 70% to Rs 2,324 crore, mainly led by increase in usage per customer and growth in data customer base.

"The year has ended on a healthy note, with revenue growth accelerating to 12.1% in FY 2014-15, from 9.9% and 9.5% respectively in the previous two years," Bharti Airtel MD and CEO (India and South Asia) Gopal Vittal said.

The company said consolidated capital expenditure for FY 15 stood at Rs 18,668 crore.

Airtel said forex losses for FY2014-15 stood at Rs 2,153 crore as compared with Rs 1,242 crore in FY14.

Net interest cost was down by Rs 903 crore from Rs 3,595 crore to Rs 2,693 crore in FY15.