Returns a list of the capabilities already negotiated. CAP_EXTENDEDCAPS

Returns a list of all the capabilities for which the Source will answer inquiries. Does not indicate which capabilities the Source will allow to be set by the application.Some capabilities can only be set if certain setup work has been done so the Source cannot globally answer which capabilities are “set-able.” CAP_SUPPORTEDCAPS

Inquire Source’s DAT messages that are valid. CAP_SUPPORTEDDATS