Use names throughout the meeting. Maintain the pace you established in the agenda, and remember to go more slowly when dealing with complex subjects. Sometimes speakers keep talking because they lack the visual clues that will tell them whether they are being understood. If you are speaking, stop periodically to ask whether your point is clear. Ask for participation.
Some people are hesitant to talk, especially at their first teleconference.
People may also hesitate because they are unsure whether a speaker has finished. Allow silences of several seconds to give people a chance to respond. Follow the agenda firmly. You will need to stop on time and vacate the conference bridge. If you find that you seldom get through the agenda, consider scheduling conferences more frequently.