The WS-Management specification defines the OperationTimeout value to indicate that the clients expect a response or a fault within the specified time, as specified in [DMTF-DSP0226] section 6.1.

The Web Services Management Protocol Extensions for Windows Vista servers MUST default the time-out value to the value of the MaxTimeoutms configuration setting, as specified in section, if no OperationTimeout value is specified by the client or if the OperationTimeout value is more than this setting.