Allen & Overy has advised Indian telecommunication giant Bharti Airtel Ltd. on a $2 billion dual-currency bond offering.

Through a wholly-owned subsidiary, Bharti Airtel International (Netherlands) B.V., the company sold the bonds in two tranches: $1 billion in 10-year dollar-denominated notes and $1 billion in seven-year euro-denominated notes. Proceeds will be used to refinance Bharti Airtel’s current debt.