| 摘要 |
<p>A caller identification system allows a user to specify certain conditions (e.g. stock prices) in which he is interested. Upon occurrence of the condition, a telephone announcement is automatically made to the user, informing the user of such condition, preferably without the telephone even ringing. The caller ID unit recognizes the incoming call as one from a service provider supplying the desired information, and automatically takes the phone off hook to allow the announcement.</p> |
