| 摘要 |
A network telephone system includes a plurality of telephone terminals located in specific countries and districts respectively, a network which connects the telephone terminals and transmits a plurality of voice packets, and a main apparatus connected to the network, and makes an exchange between the telephone terminals, the telephone terminals each includes, a selector which selects at least one of the countries and districts, and an informing circuit to inform selection signal to the main apparatus together with identification information of self telephone terminal, the main apparatus includes a memory which stores information indicating the countries and districts correspondingly to the identification information, a reader which reads the information corresponding to identification information arrived from the telephone terminal via the network from the memory, and a provider which provides services in according to read result and the selection signal to telephone terminal making a call.
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