You need to make sure P25 is checked on both the signal and voice receivers. Both under the control section and the decode section. I would check everything from Analog down, as well as everything in the decode section as I don't know what system you are trying to monitor.
I needed to have the "p25" checked. Now I need to adjust my dsd for the correct dongle. Should I use digital or analog output to DSD through VB cable??