PURPOSE: To appropriately execute speech management of a shared extension for every user, and also, to execute outgoing call without inputting personal information in accordance with a user by deciding whether or not the user is specified with regard to an extension from which a call request arrives.

CONSTITUTION: In the case a outgoing call request arrives from extensions 11-1n, a user deciding means 60a decides whether or not a user of this extension is specified, based on a first memory table 61a. A line connection control means 60b connects this extension to a free line wire in the case the user is specified, based on a result of the decision, confirms a personal number sent from the extension in the case it is not specified, and thereafter, connects its extension to the free line wire. After a line speech of the extension is finished, a communication management control means 60c transfers communication management information including the speech time and a speech destination telephone number, etc., to a speech management device MA together with a user's ID number retrieved from a second or a third memory table 61b, 61c to store tham.