NEW DELHI (Reuters) – Top U.S. phone company AT&T Inc will invest $1 billion worldwide this year to expand networks and its services in key markets, the company said on Wednesday.

The amount does not include AT&T’s investment in the United States, Greg Brutus, a spokesman for AT&AT Asia Pacific region, told reporters in Indian capital.

He said the investment would mainly be to build sub-sea optical fiber cable in Asia and for an Ethernet network in Europe and Asia.

Ethernet is a family of frame-based computer networking technologies used for local area networks.

Last year, AT&T spent $750 million outside the United States of its total investment of $18 billion, he said.