Complex sentence: The role of satellites in point-to-point voice and data communications has largely been supplanted by fiber optics; in 2006,99% of the world's long-distance voice and data traffic was carried over optical-fiber.
Split into simpler sentences: The role of satellites in point-to-point voice and data communications has largely been supplanted by fiber optics. In 2006,99% of the world's long-distance voice and data traffic was carried over optical-fiber.