To use these service new users will have to register with Site2SMS before they can start using the service. All they need is a registered mobile number in their name that is what the service will be utilizing to make calls. To make calls all they need to do is enter the number and following that they will gate a call from Site2SMS on their registered mobile number, following that the server will connect the same call to the desired mobile number to which the user wished to talk to. Same can be carried on to 20 calls per day.
But in any case a single call cannot exceed 2 minutes, at the end of which the call will be automatically disconnected, but users can again generate a call request in the similar fashion and can call the same number again as well.