Huawei files appeal in U.S. court against FCC's rural carrier purchase ban

SHENZHEN, China (Reuters) - China's Huawei has mounted a legal challenge against the U.S. Federal Communications Commission (FCC) after the body designated the technology giant as a security threat and tried to bar it from a government subsidy program.The FCC last month voted unanimously to designate Huawei Technologies Co Ltd and peer ZTE Corp as national security risks, barring their U.S. rural carrier customers from tapping an $8.5 billion (6.6 billion pounds) government fund to purchase..