Communications regulator ComReg plans to force mobile operators to reduce their mobile termination charges.
These are the wholesale rates which fixed and mobile phone operators pay to mobile operators for calls connected to subscribers on their networks.
They are factored in to the prices consumers pay at retail level for fixed-to-mobile and mobile-to-mobile calls.
ComReg today said it had designated four mobile operators as having Significant Market Power in the wholesale market for voice call termination.
ComReg will announce in the coming months what measures it is to take against the four operators - Vodafone, O2, Meteor and 3 - including forcing companies to reduce their termination rates.
ComReg noted that Vodafone and O2 intend to cut their rates in September. It urged operators to pass these on to consumers.
