Problem: It is sometimes unclear who owns the meeting.

Recommendation: Conference calls must have a designated leader. When I dialed in recently, the operator wanted the company name, the code name and the leader's name. I didn't know the leader's name and the operator would not let me on the call. So much for self-managing conference calls. Know the leader or be the leader and make it clear up- front to all involved.

From: http://www.conferencecallogy.com/Conference-Calling.html