Method and apparatus for selectively sending a false system information tone on a telephone line

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 associated with the incoming telephone call, c) determining if a false SIT is to be sent based on 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.