| 摘要 |
A system enables communications between a mobile wireless communication device, such as a cellular phone, and an asset monitoring device using a text messaging protocol, such as Short Message Service (SMS). A command text message is entered on the mobile wireless device including a serial number of the asset monitoring device, a PIN and a command for the monitoring device. The command text message is transmitted via a wireless communication network and is forwarded to a service provider. Upon validation of the serial number and PIN, the service provider transmits a command to the wireless asset monitoring device via the wireless communication network. The wireless asset monitoring device receives the command and performs an action based thereon. For example, if the command is a LOCATE command, the wireless monitoring device transmits its current location, such as in latitude/longitude coordinates. The wireless asset monitoring device also transmits a response indicating a completed action or indicating that action was not taken for some reason. The service provider receives the response from the monitoring unit, parses the response, and constructs a report text message which is transmitted to the user's mobile communication device. The report text message is then displayed on the mobile communication device.
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