When a repeater repeats a new digital call that starts on one of the logical channels, the repeater does not qualify any analog call including an Emergency Call until the digital call (both the transmission and call hang time) is over and the corresponding channel hang time has expired. While the repeater repeats one analog call at a time, it can repeat 2 digital calls at a time, one on each logical channel. If a digital radio transmits, then the repeater switches to digital mode to repeat the digital call if the call uses the right color code. However, the repeater only repeats analog calls that are qualified by PL (DPL/TPL). If an analog radio transmits, the repeater switches to analog mode to repeat the analog call. In the dynamic mixed mode (DMM) the repeater dynamically switches between analog and digital modes based on the call it receives from radios. When operating in Dynamic Mixed Mode (DMM), MOTOTRBO uses a pair of physical channels configured for 12.5 kHz channel bandwidth for digital operation and 25 kHz and/or 12.5 kHz channel bandwidth for analog operation.
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