| 摘要 |
PROBLEM TO BE SOLVED: To automatically charge a company with a charge for a telephone call in the case of making a telephone call on company business with a portable telephone set owned by an individual. SOLUTION: This private branch exchange with a caller number callback function is configured to receive dial in such a status that dial from a caller terminal is receivable according to the response of the caller terminal to callback to the caller terminal, and to perform exchange processing according to the received dial. In the case of transmitting guidance to make the caller terminal select a transfer service or an information extraction service to the caller terminal when a reception means is set in such a status that dial is receivable, the caller terminal is made to select the transfer service or the information extraction service from dial from the caller terminal, and then the service corresponding to the pertinent selection is provided. COPYRIGHT: (C)2008,JPO&INPIT
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