3.2.4.1.19 Remote Shell Compression
To optimize network bandwidth, the Web Services Management Protocol Extensions for Windows Vista clients can send an optional SOAP header CompressionType as part of a wst:Create request for a remote shell to indicate that the data sent as part of the ensuing Send and ReceiveResponse messages will be compressed.
It MUST set the XML namespace URI of the CompressionType header to http://schemas.microsoft.com/wbem/wsman/1/windows/shell.
It MUST set the value of this SOAP header to a string that represents the compression algorithm that will be used.
It SHOULD set the mustUnderstand attribute of this element to "true".
If this SOAP header is sent<133>, Web Services Management Protocol Extensions for Windows Vista clients MUST compress any data that is sent in a Send message by using the specified compression algorithm.<134>