The network 'PACE-Bus' (RS485) does not support digital or analog audio.
The PN1002-A1 and PN2009-A1 can be used to isolate the internal analog audio wiring from the external wiring.
The analog audio output signal from the PT2003-A1 or PT2009-A1 microphone must be connected to the analog audio input 1 'IN1' of a digital audio matrix. In addition, an analog audio signal can be connected from an analog audio output 'OUT1' to 'OUT4' of a digital audio matrix to the loud speaker in the PT2003-A1 or PT2009-A1.
The PT2003-A1 and PT2009-A1 can be connected to the digital audio matrix PC1001-A3, or PC1002-A3.
The call stations PT2003-A1, PT2008-A1 and PT2009-A1 can only use the analog audio input 1 'IN1' of the digital audio matrix.
If multiple call stations are connected to one digital audio matrix, they must share the analog audio input 1 'IN1' channel and work in parallel. Therefore, only one connected call station can be active at the same time.
If a call station PT2003-A1, PT2008-A1 or PT2009-A1 is connected to a digital audio matrix with an integrated micro SD card, the call station and the micro SD card announcement have the same signal priority.