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7027827 Method and apparatus for channel sharing between multiple communication systems  
Remote units within a first communication system ( 121 ) utilizes frequencies (channels) from a second communication system ( 120 ) when placing a call. When a first remote unit ( 106 ) wants to...
6529486 Trunked radio repeater communication system  
A trunked radio repeater communication system capable of use in a networked system includes a plurality of distributive switches and a unique signaling protocol and a switching protocol for...
Matches 1 - 2 out of 2