AT&T Inc.won a contract from the U.S. Defense Information Systems Agency to providelong-haul telecommunications and related transmission circuits.

The deal is worth up to $74.6 million over a period of fiveyears, if all options are exercised, the company said May 11.

The telecom services will support communications betweenselect U.S. Department of Defense aircraft and ground stations across the continentalU.S. and around the world.