A free form string indicating the algorithm or tool used by the device to support compression. If it is not possible or not ...

A free form string indicating the algorithm or tool used by the device to support compression. If it is not possible or not desired to describe the compression scheme (perhaps because it is not known), recommend using the following words: \"Unknown\" to represent that it is not known whether the device supports compression capabilities or not, \"Compressed\" to represent that the device supports compression capabilities but either its compression scheme is not known or not disclosed, and \"Not Compressed\" to represent that the devices does not support compression capabilities.