Method and apparatus for monitoring link activity to avoid system conflict in a dispatch system

摘要

"METHOD AND APPARATUS TO MONITOR LINK ACTIVITY TO AVOID SYSTEM CONFLICT IN AN ORDER SYSTEM". It is a method and device to avoid system conflict in a dispatch system by monitoring link activity. The dispatch system is comprised of a set of remote units (10, 20, 22), which communicate with each other, broadcasting the group one at a time. A remote unit (10) communicates with the other remote units via at least one base station (44). A communications manager (40) grants a remote unit (10) to be the exclusive system conversation upon request through the base station serving the requesting remote unit (44). The base station (44) monitors a series of data from the remote unit designated as the system conversation (10) that detects voice activity. The base station (44) sends a replacement request to the communications manager (40) to abandon the privilege of the system conversation if the voice activity falls below a predetermined threshold.