| 摘要 |
An interactive information delivery system server 2, delivering text or other visual data to a display unit 3 is accessed by a user by means of his own telephone 6, through an interface unit 1. The interface unit 1 interprets key pad presses and/or voice commands, and in response to these it controls the server 2. This allows the expensive and vulnerable hardware 3/4 (which may be a conventional PC and modem) to be positioned in a secure location, but still be usable by members of the public. As the location of the display unit 3 (which may be a conventional PC and modem) may make audio output impractical, the interface unit 1 may pass an audio channel from the server 2 to the user's telephone 6. In response to appropriate commands from the telephone 6, it can also divert the call to a predefined call center. The server 2 application scripts and control programs largely follow normal WWW Internet practice, except that the output from the server is to be transmitted to a destination (display unit 3) other than that from which the instructions arrive (the interface 2). The display unit 3, when in idle mode, displays a page or pages in the idle state, including a telephone number to dial in order to access information. This number will be specific to the display unit, allowing the interface unit 1 to identify which display unit the user wishes to use.
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