Retrieves the cumulative count of data bytes transferred by the radio.
Positive HRESULT values indicate success and are used as command identifications for matching the asynchronous call result. Negative HRESULT values indicate an error. Errors are defined in the Ril.h file.
An asychronous result of RIL_RESULT_OK indicates success. The lpData notification parameterpoints to a RILBYTECOUNTER structure.
The packet byte count can be reset using the RIL_ResetPacketByteCount function.
This function has not been implemented in the sample RIL driver.