Web-scheduled conference call lengths are only scheduled in increments as specified on the web site.  You may call in up to 20 minutes early but you will hear music-on-hold until the scheduled start time of your conference.   If facilities are available at the time your conference is scheduled to end, our system will automatically extend it if it runs long.  Of course, Reservationless conference calls can start at any time and can last up to three hours.  See our Services page for a comparison between our different services.