The Voice Chat system provides a robust and scalable solution that allows subscribers (prepaid and postpaid) to set up a conference call by inviting other subscribers on a multiparty shared-cost model. A multiparty conference calls starts with a minimum of two parties and can have a maximum of (configurable) parties including the organizer. In order to avail the services of the Voice Chat system, the subscriber needs to register to the service by dialing a short code. The system prompts the subscriber to confirm the deduction of the registration fees. Subscribers can select/edit the...