Moscow’s arbitration court is set to begin hearing an antitrust suit against mobile operator MegaFon on 21 February. The suit has been filed by the Federal Antimonopoly Service (FAS), which claims that the cellco colluded with Russia’s other major mobile firms – MTS and Vimpelcom – to set one interconnect tariff for themselves and a higher one for all other players. MTS and Vimpelcom opted to bring all interconnect tariffs to the same level when faced with legal action last year, but MegaFon has decided to fight its case in court. MegaFon charges RUB0.95 (USD0.036) per minute for incoming calls from MTS or Vimpelcom and RUB1.10 (USD0.041) per minute for calls from all other networks. The regulator says the pricing structure violates Russia’s competition laws, Prime Tass reports. Between them, MTS, Vimpelcom and MegaFon serve more than 85% of all Russian cellular subscribers.