CONNECTION CONTROL SYSTEM IN AUTOMATIC EXCHANGE SYSTEM

摘要

PROBLEM TO BE SOLVED: To release interruption to each attendant board on request of a privacy call. SOLUTION: An extension terminal 1 is provided with a privacy call request means that makes a privacy call request with a line to a line controller 4, and the line controller 4 is provided with a recognition means that recognize a privacy call request in a state that pluralities of parties make speeches between lines and pluralities of extension terminals 1 via conference trunks, a privacy call priority discrimination means that discriminates whether or not a privacy call is available of the extension terminal 1 releasing its speech among pluralities of the extension terminals 1 connected via conference trunks 7, and a privacy call processing means that invalidates the privacy call request when the privacy call propriety discrimination means discriminates a disabled privacy call and interrupts the extension terminal 1 being a speech release object when the discrimination means discriminates an available privacy call.