Cellular-based communications system and method of using same
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United States of America Patent
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Jul 3, 2012
Grant Date -
Nov 10, 2005
app pub date -
Sep 2, 2003
filing date -
Oct 9, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An apparatus and method for transmitting serial digital data across wireless modems is disclosed. In one embodiment, data is collected by a remote monitoring device and transmitted to a first Cellular Digital Packet Data (“CDPD”) modem via one or more RS232 interfaces. The applications program in the first CDPD modem transmits a signal to a second CDPD modem initiating communications. The applications program in the second CDPD modem returns a signal, indicating the status of the interface. Data transmission is initiated when the status of both interfaces is established.
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