LJUBLJANA (Slovenia), July 25 (SeeNews) – Telekom Austria said its wireless unit in Slovenia, Si.mobil posted earnings before interest, taxes, depreciation and amortisation (EBITDA) of 26.6 million euro ($29.2 million) for the first half, down 39.8% on the year*, chiefly due to a 20 million euro positive extraordinary effect in the first quarter of 2015.