We require the app which must be similar to viber in functionality +WHATSAPP+ it should also support video, we require the mobile app with complete source code as well as the server side installation/configuration, we will get u server/softswitch/voip switch whatever u require, if u have develop anything similar to this type of app you would be given preference.
Only those developers apply who have developed mobile dialer in the past with refrence to their old work.