Telecom major Bharti Airtel today announced the pay-per-second plan on its virtual calling card

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service, 'Airtel CallHome', for its customers in the US.

Airtel CallHome has so far been available in the UK, Canada and Singapore.

"With this, Bharti Airtel becomes the first to offer pay per second plans for the US to India calling card market," Airtel said in a statement.

The USD 6.99 plan comes with an administration fee of USD 0.49, offering customers a tariff of just 0.03 cents/sec on the balance USD 6.50. The plan has a validity of 30 days.

"Ushering in a new paradigm in calling tariffs vis-à-vis conventional plans, this initiative empowers customers to pay only for the duration they talk," it added.