SIP to Viber gateway


We need to develop a SIP to Viber gateway. The gateway should be able to pass voice calls incoming over SIP and forward them through Viber to complete the call to the called party number. The development platform/operating system is not important. The project should be completed either by using the Linux/Windows Viber executables, or by using the Android /Symbian/ Windows Phone mobile versions of the application, no matters on the version number. The implementation should return the correct call error codes to the SIP backend, i.e. CALL SUCCESS, BUSY, UNAVAILABLE, etc. For a successful project we'll select the one, triggering successfully continuous SIP/Viber calls.

Skills: Java, Linux, Telecommunications Engineering, VoIP, Windows API

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About the Employer:
( 0 reviews ) Bucharest, Romania

Project ID: #14787853

10 freelancers are bidding on average $2401 for this job


Hello, I have strongly experienced about SIP Phone. Here is my past works: Relevant Skills and Experience Here my previous projects http More

$2500 USD in 15 days
(14 Reviews)

Hello, we are a team with more than 7yrs of expertise in the field, we can develop a gateway for viber to asterisk system based on what your needs are, we already have a demo of it working to show you Relevant Skills More

$2500 USD in 30 days
(20 Reviews)

Hello, We have accomplished 90% of the project which is similar of your requirement. All we need 10% customization as per your requirement set and specifications. I want to discuss in personal chat in order to explore More

$2319 USD in 30 days
(3 Reviews)

I am an IITK graduate and I have 9 years of experience in software development. I have 100% completion rate and I have finished all the projects with the highest level of customer satisfaction. Relevant Skills and Exp More

$2500 USD in 30 days
(17 Reviews)

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$2500 USD in 30 days
(2 Reviews)
$2500 USD in 30 days
(0 Reviews)
$2500 USD in 5 days
(0 Reviews)

Though I am new here but my team has 4 years of experience into Website Design and Development across all Platforms especially on . Can very well execute this Project and can start immediately.

$2695 USD in 7 days
(0 Reviews)
$2500 USD in 30 days
(0 Reviews)

* Don't pay any advance. Just create milestones * Daily communication and work updates * In the bid amount, I shall provide website , android and ios application. Relevant Skills and Experience * Don't pay any advance More

$1500 USD in 30 days
(0 Reviews)