Three years ago, Aastra had no presence in India. Now it has big plans for the world's second-hottest growth market after China. The public company, founded in 1983, records annual revenue in excess of $800 million and employs some 2,400 worldwide. It has slowly pressed its global footprint by acquiring companies overseas. Its Indian presence is thanks to its buyout in 2008 of the enterprise unit of Sweden's Ericsson. Now the company has thousands of customers in the country.