METHOD FOR CONNECTING FIRST USER TERMINAL TO SECOND USER TERMINAL, RELATED DEVICE AND SOFTWARE MODULE

摘要

PROBLEM TO BE SOLVED: To provide a method and a system for interconnecting user terminals of different virtual private networks. SOLUTION: When a 2nd user terminal is connected to a network access server NAS 1, the NAS 1 transmits connection information to a subscriber data server SDS. When the connection information is received, a database of the SDS is updated. The SDS processes a communication request received from the 1st user terminal to establish the connection between the 1st and 2nd user terminals. The SDS retrieves connection information of the 2nd user terminal from the database, to decide the NAS 1 connected to the 2nd user terminal on the basis of the connection information. The 2nd user terminal is informed of a communication request by the 1st user terminal. The 2nd terminal starts and controls change-over of the connection of the 2nd user terminal.