SUBSCRIBER ACCOMMODATION DEVICE, SUBSCRIBER CHANGEOVER METHOD, AND PROGRAM

摘要

PROBLEM TO BE SOLVED: To prevent a call service of an important customer from being affected.SOLUTION: A subscriber changeover method in a subscriber accommodation device (101) to be arranged between an exchange (106) and a terminal device (102) includes: a step of giving a changeover priority by subscriber unit; and a step of controlling whether a subscriber of a module (107a) with trouble is changed over into a preliminary module (108) on the basis of a priority when trouble occurs in each module accommodating multiple subscribers.