cost of video conferencing
The main benefit of audio conference calling is that it is much less expensive than video conferencing. Usually at a rate this is more than half the cost of video conferencing. You could easily produce some pdf or text file work books and email them to anyone who will be participating in a training call. This will still give them some visual, but at a fraction of the cost. Audio conferencing allows people in different locations to connect simultaneously through conventional telephone services. Any number of participants can communicate without being in the same place. It is used to hold group meetings or live presentations through audio channels. More on conference call services.