2.2.1.56.2 PidLidConferencingCheck Property
Type: PtypBoolean ([MS-OXCDATA] section 2.11.1)
When set to TRUE (0x00000001), the PidLidConferencingCheck property ([MS-OXPROPS] section 2.65) indicates that the associated meeting is one of the following types:
"Windows Media Services"
"Windows NetMeeting"
"Exchange Conferencing"
If this property is set, PidLidConferencingType (section 2.2.1.56.3) is also to be set. This property is set to TRUE only on Meeting objects or meeting-related objects.