Patent ID: 6115459
Filing Date: 2000-09-05
Classification: H04Q

Abstract:
A telephone switching system connecting an outer line and a plurality of telephone terminals (hereinafter simply called the ""terminal""), said exchange comprising:physical ports for individually connecting to said terminals;an exchange for switching between said terminals and said outer line through the physical ports and between said terminals through said physical ports based on predetermined connection information;a connection information storing device for storing individual connection information representing a connecting relation between each of said terminals and said physical port;detecting means for detecting whether a first terminal among said terminals is disconnected from a first physical port among said physical ports, and then a second terminal is connected to said first physical port;connection information modifying means for modifying the connection information stored in said connection information storing device so that desired connection information representing a connecting relation between said first physical port and said second terminal is stored for said first physical port to which said second terminal is connected; andsaid connection information modifying means comprises a timer device performing clocking for a predetermined period of time, when said detecting means detects disconnection of said first terminal, said timer device being caused to start clocking for the predetermined period of time, when connection of said second terminal is detected after completion of said clocking, connection information stored in the connection information storing device being modified so that desired connection information is stored for a physical port to which said second terminal is connected.