Develop website with telecommunication features like voice call and messaging, integration with billing and payment API.
On the main page there is log in/sign up (regular, Facebook, Google+) screen.
After login user can see existing balance, payment button and dial phone number via keypad.
User can choose either voice or messaging mode.
Design will be given. Need to integrate web call part with billing and payment systems (scratch cards).
Standards:SIP, Java, PHP, Open source SIP-RTMP gateway (https://code.google.com/p/siprtmp/), star2billing (www.star2billing.com).
VoIP (SIP, RTMP, Asterisk) experienced freelancers only
16 freelancers are bidding on average $1820 for this job