(Telecompaper) Telenor reported all-time high revenues in the first quarter, with organic sales growth reaching 7.6 percent. As the operator is confident it will see another good year, it has raised its 2015 guidance for organic revenue growth to 5.7 percent and its EBITDA margin expectations to 34-36 percent. The capex to sales ratio is seen at 17-19 percent, reflecting higher investments in Thailand and Myanmar in addition to the recently launched satellite. Revenues for the quarter rose to NOK 30.2 billion from 25.3 billion the year before while EBITDA before other items reached an all-time high of NOK 10.6 billion from 9.1 billion, despite start-up costs in Myanmar and continued high handset sales. The EBITDA margin went lower to 35.0 percent from 35.8 percent while the operating cash flow lifted to 6.1 billion from 5.5 billion. The net profit advanced to NOK 4.1 billion from 3.7 billion. The company added 5.9 million mobile customers during the quarter, taking total subscriber numbers to 190 million. Telenor said more than one third of all subscribers are now active.