Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2011-01-11
2011-01-11
Edwards, Jr., Timothy (Department: 2612)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S226200, C455S161300, C455S151100
Reexamination Certificate
active
07869805
ABSTRACT:
A method and apparatus are provided for allowing a field device to select a data communication provider among a plurality of available data communication providers. Preferably, the method includes periodically, or selectively, assessing the strengths and efficacy of data communication on one or more alternate data communication providers. The data communication provider with the strongest signal and/or most effective data communication is selected for use by the field device. Preferably, the field device logs events where it switches among data communication providers.
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Ostby Philip G.
Schnaare Theodore H.
Sierra Gabriel L.
Christenson Christopher R.
Edwards, Jr. Timothy
Rosemount Inc.
Westman Champlin & Kelly P.A.
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