Inter-network connecting system

Details Inter-network connecting system Inter-network connecting system

H - Electricity

04

Q

344/24

H04Q 3/00 (2006.01) H04L 12/46 (2006.01) H04M 3/24 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2033191

An inter-network connecting system comprising a main network having an exchange function and a subnetwork having no exchange function, to improve the expandability, economy, and efficiency of the subnetwork. When an extension line communication which is a communication in the subnetwork is to be carried out, a call setting processing processor in the main network gives a calling terminal a first special signal so as to operate lookback means in a connection control unit in the subnetwork to set a physical communication paths (Ps) for an extension line between terminals in the subnetwork; and when an outer line communication which is a communication between the main network and a terminal in the subnetwork is to be carried out, the call setting processing processor gives a calling terminal a second signal so as to stop the operation of the loopback means in the connection control unit to set a physical communication path (PM) for an outer line between the exchange and the terminal in the subnetwork.

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