Conference Calling Service
There are basically two types of conference calls: reservation less conferences and web scheduled conferences. In reservation less conferences you and the participants can call any time anywhere using a general number which is provided by the service provider. But the problem with this kind of conference call is you cannot be sure that the line will be free and all your participants want to talk to each other.
You can have up to a maximum of 25 participants speaking to each other for a maximum time limit of three hours. If you want to speak more or want to add more participants you need to pay more and hire premium services from the providers.
In web schedule conferences you will get some reserve slots which you need to book in advance. You need to visit the website of web schedule conference service providers and reserve your slot by paying them the amount in advance. There are some providers who allow you to even book your slot 5 to 10 minutes before the time of conference.
In this type of conference also you will have a time limit of three hours but the maximum number of participants could be hundred. To utilize this service you need to open an account on the website of the service provider by completing the online forms on their website. You can search on the Google for the conference call service providers.