The invention relates to a method for arranging a conference call with mobile terminals operating in a cellular network. At first, a group of the participants of the conference call is formed either by selecting the participants from a list saved in the memory of the mobile terminal in by inputting the contract information of the participants manually. In the next step, a summons to the conference call is drawn up in standard form. An application loaded into the memory of the convener's mobile terminal forms the summons, and sends the summons to the particulars via the cellular network. When a participant wants to join a conference call, he/she makes a call with the mobile terminal to the telephone number mentioned in the summons. An application in the mobile terminal of the convener receives the incoming calls and joins them to the conference call automatically.