| 摘要 |
A location reporting device for use with both voice and data RF transceivers. The location determining device selects which of the transceivers will be utilized to transmit location information to a central site in response to a number of predetermined criteria, including reception of a polling request on one of the transceivers, initiation of transmission activity on one of the transceivers, and elapsed time since a last transmission of location information by the location unit.
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