If the 'OPOS' option is selected in the Tone Indicator field,
you must enter the OPOS driver name for the tone device here.
Both the Programmatic ID and the Logical Device Name can be used as the Device Name for the tone
indicator. You can find the Programmatic ID and the Logical Device Name in the registry:
HKEY_LOCAL_MACHINE\SOFTWARE\OLEforRetail\ServiceOPOS\ToneIndicator.