Abstract: A multi-location conference system has conference terminals connected to a conference device, which stores information for the conferences. A reservation center registers and deletes conference information in and from the conference device at times designated in accordance with reserved conference information collected in advance for the respective conferences, thereby controlling automatically the starting and ending of each of the conferences. Where there are first conference terminals that can be connected with a selected one of line speeds, and second television terminals that can be connected with a fixed one of the line speeds, and a plurality of conference devices each capable of simultaneously holding multi-location conferences at a selected one of said plurality of line speeds are provided, an operational management device is provided to assign, at the time of convening or reserving a conference, the conference device by a sequential search in an order different dependent on the selected line speed.