Subclass helps filtering the channels on direction (RX or TX).

Reception

To get the ADC receive channel handle, the following subclass can be used:

Constant	Description
MXF_SCLASS_RX_CHANNEL	Generic receive channel

Transmission

To get the DAC transmit channel handle, the following subclass can be used:

Constant	Description
MXF_SCLASS_TX_CHANNEL	Generic transmit channel