| 摘要 |
A system and method is discussed for targeting a message to an intended listener over a public announcement system by selecting a single broadcast location, such as a speaker, from a plurality of broadcast locations. A typical method for locating a listener uses a method of triangulation of a wireless device located on the listener. A broadcast location is selected from distance calculations that determine which broadcast location is closest to the listener. Each broadcast location has an associated Internet Protocol (IP) address. The message is delivered to the IP address of the closest broadcast location. Voice over Internet Protocol (VoIP) technology can be used to selectively deliver the message.
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