A conference call is done by the help of a telephone and in which the calling party can talk to more than one party at the same time. It is a type of conference so it is called conference call. Conference call is often referred to as an ATC.

Conference call can be used to call a third party while talking with the second party and then all the three parties can hear and talk to each other. Sometimes the persons are able to conference call themselves which is done by dialing a special telephone number which then connects to a conference bridge.

With the help of internet and the telecommunication success it has become possible to talk with more than one person all together sitting any where in the world. Another important part of the conference call is security measures. If you are doing any business talks over conference system then it must be a secure line. Due to this reason most conference call services are provided with basic measures of security. Using of passcode is the most common way of having secure line. In this system no other party can inter in you call unless he have the passcode. After connecting to a conference call it can be locked so that no other could enter in the calls.

Conference calls are of two types. The first one is audio conferencing and the second one is the video conferencing. In audio conferencing you can only speak or listen. It means you can just talk only. But in video conferencing you can talk as well as you can watch the person also with whom you are talking. This video is live video not a recorded one. The concept of video conference call had got success due to internet only. There is a third type of conference call also which is known as web conferencing. In this system the caller and the call party not only talk each other but they can also share their computer application. So they can give any presentations also. This is also beneficial for businessman mainly.

There are different categories of conference call. One of them is prepaid conference call. In prepaid conference call any businessman or individuals have to purchase conferencing services online. And these prepaid conference calling can be performed with the help of landline telephone, internet or mobile. There is no need to buy any extra accessories. There are many conference call providers but the important ones are AT&T, Sprint Nextel, Verizon, MCI.

Most places conference calls are used for entertainment or social purpose also such as group call, etc. The conference call is used to meet new people. But the basic requirements of the conference call if for the businessman.

Other than all these there are certain limitations also of conference call. The biggest limitation of conference call is its availability. Still it is not widely distributed. In majority of the countries you will not get this facility. This can put a question mark over the world wide network of conference call.