Thank you so much,it is helpful for me .:)

Preparation of a successful business teleconference requires some planning ahead of time. I think, first of all, that it is very important to coordinate the call with a colleague from the other site. Some of the things to agree upon previous to call would include: duration of the teleconference, detailed agenda of items to be discussed, times assigned to each discussion, setting of goals... One also has to ensure that there will be one person acting as moderator and leader of the meeting. This person will be responsible for taking roll call, moderating the discussion, keeping track of meeting actions and circulation of the minutes. It is important that such person be already familiar with the area under discussion and with the meeting participants, as much of the success of the teleconference will depend on this person's managerial and leadership skills.

http://www.wikihow.com/Make-a-Conference-Call http://www.streetdirectory.com/travel_guide/186050/conference_call_pricing/10_essential_steps_to_organizing_a_conference_call.html