H - Electricity – 04 – M
Patent
H - Electricity
04
M
H04M 3/42 (2006.01) H04M 1/27 (2006.01) H04Q 11/04 (2006.01)
Patent
CA 2291934
A terminal adapter (10) includes a transmit/receive control section (17)for controlling telecommunication between a user terminal device (20) and another user terminal device line-connected to the terminal adapter (10) through a selected one of particular telecommunication networks respectively provided by particular common carriers with which a user made a service contract, and a memory device (19) for storing a table indicating adapter-operating conditions including exchange identification numbers respectively specifying particular exchanges respectively provided in the particular telecommunication networks. The transmit/receive control section (17) selects, in response to manual input of a called party's telephone number through the user terminal device, one of the particular telecommunication networks or a public telecommunication network, and reads out, when one of the particular telecommunication networks is selected, the exchange identification number corresponding to the selected network from the table stored in the memory device (19) and delivers the same.
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