(Telecompaper) Australian operator Telstra announced that its total income for the half-year ended 31 December 2017 was up 5.9 percent to AUD 14.5 billion, helped by growth in the mobile and cloud services segments, while EBITDA was down 2.5 percent to AUD 5.1 billion. Net profit declined 5.8 percent to AUD 1.7 billion, hurt by the earlier announced impairment charge of AUD 273 million to write off the remaining carrying value of Ooyala.