In 2011 TPSA had a $430 million claim filed against them by GN Store Nord (GN), which owns 75% of DPTG, in the second phase of an arbitration trial. Bloomberg reported that, "DPTG won a 2.2 billion-krone award in September at an arbitration tribunal in Vienna. The tribunal said the company had improperly calculated what it owed DPTG for a fiber-optic transmission system the venture installed in 1991. "TPSA" owed payments based on data traffic over the network. The companies disagreed over how to measure the traffic and spent nine years in arbitration. The September award covered traffic from 1994 to 2004, and the new claim refers to 2004 to 2009. TPSA has not paid the first award and has filed a complaint about the arbitration, while GN has started enforcement proceedings in Poland and the Netherlands."