# Using the channel 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 | A list of MSPP filters from which the filter can send and receive data.
Commands | A list of valid commands that can be sent to the filter with mspSendCommand.
Queries | A list of valid queries that can be sent to the filter with mspSendQuery.
Unsolicited events | Any 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:

When applications create MSPP channels with mspCreateChannel, the MSPP API automatically creates all of the filters that channel needs to run. The application does not need to individually create and join channel filters.