| 摘要 |
A method and apparatus for selectively sending a false system information tone (SIT) in response to an incoming telephone call is provided . One embodiment of the apparatus includes a telephone line interface, caller identification (caller ID) module, programmable oscillator, display device, and controller. In another embodiment, the apparatus includes a data storage module, telephone line interface, caller ID module, programmable oscillator, display device, controller, and one or more control devices. The method includes the steps of a) detecting a ring on the telephone line, b) receiving information about a calling party associate d with the incoming telephone call, c) determining if a false SIT is to be sent based o n the calling party information, and, d) if the false SIT is to be sent, i) determining when the false SIT is to be sent; ii) generating the false SIT; and, iii) sending the false SIT at the determined time.
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