A conference system, suitable for the training of interpreters, which conference system comprises: - a central unit, - a chairman's unit, - a plurality of participant units (130a-c), and - a plurality of interpreter units (140a-c); - a teacher unit associated with the chairman's unit; and - trainee units (145a-c) associated with the respective plurality of interpreter units (140a-c); wherein the chairman's unit, the plurality of participant units (130a-c) and the plurality of interpreter units (140a-c) are connected to the central unit by means of a first digital network; and wherein the central unit is configured to, in an operating mode, allow distribution of: - a first set of audio signals from the chairman's unit to selected participant units (130a-c) and selected interpreter units (140a-c); - a second set of audio signals from selected participant units (130a-c) to selected other participant units (130a-c), selected interpreter units (140a-c) and the chairman's unit; and - a third set of audio signals from selected interpreter units (140a-c) to selected other interpreter units (140a-c), selected participant units (130a-c) and the chairman's unit; wherein: - the teacher unit and the trainee units (145a-c) are connected to the central unit by means of a second digital network; - the teacher unit is configured to dispatch pre-recorded speech, and wherein the central unit is further configured to, in a training mode, allow distribution of the pre-recorded speech, as a fourth set of audio signals, from the teacher unit to selected interpreter units (140a-c); and - the trainee units (145a-c) are configured to dispatch pre-recorded speech, and wherein the central unit is further configured to, in a training mode, allow distribution of the pre-recorded speech, as a fourth set of audio signals, from the trainee units (145a-c) to the respective associated interpreter units (140a-c). - a central unit, - a chairman's unit, - a plurality of participant units (130a-c), and - a plurality of interpreter units (140a-c); - a teacher unit associated with the chairman's unit; and - trainee units (145a-c) associated with the respective plurality of interpreter units (140a-c); - a first set of audio signals from the chairman's unit to selected participant units (130a-c) and selected interpreter units (140a-c); - a second set of audio signals from selected participant units (130a-c) to selected other participant units (130a-c), selected interpreter units (140a-c) and the chairman's unit; and - a third set of audio signals from selected interpreter units (140a-c) to selected other interpreter units (140a-c), selected participant units (130a-c) and the chairman's unit; - the teacher unit and the trainee units (145a-c) are connected to the central unit by means of a second digital network; - the teacher unit is configured to dispatch pre-recorded speech, and wherein the central unit is further configured to, in a training mode, allow distribution of the pre-recorded speech, as a fourth set of audio signals, from the teacher unit to selected interpreter units (140a-c); and - the trainee units (145a-c) are configured to dispatch pre-recorded speech, and wherein the central unit is further configured to, in a training mode, allow distribution of the pre-recorded speech, as a fourth set of audio signals, from the trainee units (145a-c) to the respective associated interpreter units (140a-c).