You can select a recorded audio file and set it as the custom audio prompt
        for the alarms sent from the channels linked to specific models of DVR.
            Make sure you have recorded audio files on the Mobile Client. For details, see Manage Custom Audio.
         
                
Note: 
                    The device should support this function.
                 
            - 
                On
                    the device list, tap  to enter the Settings page of
                    the device. to enter the Settings page of
                    the device.
- 
                Tap Custom Audio to enter the Select Channel page.
            
- 
                Select channel(s), and then tap Next Step.
                
                    The available audio file(s) will appear. 
 
- Optional: 
                Tap the
                    Play
                    icon to play the audio file.
            
- 
                Select an audio file, and then tap OK.