We need an online calling interface in the following ways
1. Call feature will be included as from website to cell phone/mobile numbers.
2. The calling interface will be for Indian Users or mobile numbers.
This system is same as the following web application.
Please, Only Bid on this project if you have already experience of this type of application system.
Provide me an expertise proposal for API and any other interface.
Also, Mention Sample URL which you have already developed and Exact time line including Design part also.
Technologies preferred. PHP OR .NET