| 摘要 |
PROBLEM TO BE SOLVED: To provide an inter-network switching connection system which facilitates connection between a general public line network and a mobile system enterpriser public line network. SOLUTION: A connection switchboard 30, provided with an analog-digital signal conversion means 32 and a digital/analog signal conversion means 34 is connected to a general public line network 10, and this connection switchboard 30 is connected to a mobile communication control station 24 of the mobile system enterpriser public line network through a multiplexer 52, a leased line 55, and a multiplexer 52'. An analog signal inputted from the general public line network 10 is converted into a digital by the connection switchboard 30 and is outputted to the mobile system enterpriser public line network through the leased line 55, and a digital signal inputted from the mobile system enterpriser public line network is inputted to the connection switchboard 30 through the leased line 55 and is converted into an analog signal and is outputted to the general public line network 10, thus the inter-network connection is possible. |
