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6011806 Cellular telephone communication protocol  
A cellular telephone communication protocol enables a communication link primarily for the transmission of voice and data. At predetermined intervals or on-demand data regarding location, an event,...
4716407 Trunked communication system true priority channel scan  
While receiving a lower priority message, a remote transceiver unit in a trunked radio communication system is diverted immediately to a priority channel when a priority message is generated. In a...
Matches 1 - 2 out of 2