IVR Based Missed Call has really grown big way in last two years and it has found many diverse applications in India. Missed Call System has long outgrown the days when it was used for supporting for a cause or a mere voting system. It is now being used for providing voice content on phone, real world problem solving.
I think, one of the major reason for growing usage of Missed Call System is, its free for the user. Before Missed Call was used for many voice application, it was already in use by various individuals to exchange simple information.
While toll free numbers are also free to make any outbound calls by its users, Toll Free numbers have not been very popular even among corporates as it is still costly for its owners. More ever, many of the toll free numbers in India are used without any intelligent IVR System, and does not provide any measurable information on return on investment.
Missed call also grew because of the fast growth of mobile phones. Incidentally, only mobile phones provide accurate option to give missed call. With more mobile phone penetration, we can hope for more missed call based application.
With easy availability of hosted Missed Call Service in India, which is very price competitive, this missed call utility is set to grow more in coming years. Also, we can hope for more innovative service using this service in future.