Conference calling makes it possible for multiple people in different locations to speak to each other over the phone or over the internet. It saves time and money, since it obviates the necessity of flying people all over the country or all over the world so that they can meet with each other. And whereas without conference calling, only two people could communicate with each other over the phone line at a time, with conference calling, it is possible for even as many as 1000 people to be connected and to "meet" with each other without ever leaving their offices.