Oct 4, 2013 at 8:50 AM

I've created a conference with the following method:
initial call (with MakeCall)
SetupConference on the initial call.
make a new call and after receiving the Conferenced state for it, AddToConference (called for the ConferenceCall).
It seems to work fine up to this point.
I should add a functionality for removing a participant from the conference.
I've tried with RemoveFromConference (ConferenceCall.RemoveFromConference(participant)), but it ends up with the following error: lineRemoveFromConference failed [0xFFFFFFFF8000001C] Operation not permitted in current call state.
The Participant is in Conferenced state, and the ConferenceCall in Connected state.

Can you help me with this problem?