From domestic virtual private telecommunication network extension connection method and system unit null to international virtual

摘要

PURPOSE: To provide an extension connection method/system device between a domestic virtual exclusive network and an international virtual exclusive network in order to perform the international communication by means of an international VPN extension number without switching the domestic virtual exclusive network to an off-net state from an on-net state. ;CONSTITUTION: When the dial number that is dialed by a domestic VPN contract subscriber A is equal to an international VPN extension number, a domestic network service control station 4 extracts a location number out of the international VPN extension number. Then the station 4 retrieves a prefix corresponding to the extracted location number out of an international extension connection data table 13 and gives an instruction to a domestic subscriber exchange 1 through a common line signal network 3 to connect the domestic virtual exclusive network to the international virtual exclusive network by means of a routing number including the prefix added to the international VPN extension number.;COPYRIGHT: (C)1996,JPO