# Using the endpoint filter reference

This section provides a comprehensive, alphabetically-ordered reference to Fusion MSPP filters. A typical filter description includes:

Filter ID | ID for the filter as specified in the mspcmd.h file.
Initialization structure | Structure used to specify filter parameters at initialization.
Restrictions | Types of standard MSPP connections that use the filter.
Filter connections | List of MSPP filters from which the filter can send and receive data.
Commands | List of valid commands that can be sent to the filter with mspSendCommand.
Queries | List of valid queries that can be sent to the filter with mspSendQuery.
Unsolicited events | Filter-specific events returned to the application through the MSPP service.
Details | Detailed information about the MSPP filter and its configuration.
See also | References to related filters.

Each filter description illustrates the filter in the following way: