Make free calls with internet directly to phones |Tutorials for engineers

You may have seen many applications stating that you can make calls free of cost to mobiles with help of internet. All those apps need tiresome process to be completed first and then you have least chances of working.

Keeping in all those mind we introduce you an app called Awaaz(developed by Indian) through which we can make free outgoing calls just by dialing his phone number in your normal dialler application(provided you and the other person has the app installed and are on wifi or 3G network)

Great features of Awaaz compared to other VoIP services :

1. You don't need to open a app every time you call someone

2. No running of background services eating up your ram and cpu.

3 .Free of cost

As stated this app doesnt have any tiresome forms to be filled at first. All you need to do is install and run the app and you arhe done. This has to be done by other person(you wish to call) too.
Be on wifi or 3g... dial your friends no in your normal dialer and awaaz takes care of checking if your friend has awaaz installed and connects you.

Download link is here:

https://play.google.com/store/apps/details?id=com.anujjain.awaaz

Some technical features of Awaaz :

Establishes a direct [B]P2P [/B]connection between the two phones. Capable of punching a hole through NAT, or being used on the same internal network.
Never shares or uploads your contacts anywhere.
Uses the Opus codec for unmatched voice clarity.
Uses just 10 KB/s of bandwidth (upstream and downstream combined).
Uses a hybrid cryptographic system to exchange a 256-bit AES key using 2048-bit RSA. New public and private keys are generated every single time, thus theoretically making decryption impossible.
Uses GCM (Google Cloud Messaging) for push messages thus eliminating the need to run a service in the background.
Has the ability to use 3G / 4G as well. Please enable the option in the preferences if you want it.
All calls are logged in your regular call history.