SIP to viber, whatsapp, Line

Budget $750 - $1500 USD
Bids 7
Average Bid $1300
OPEN Ending in 1 day


We need to develop a SIP to Viber/Whatsapp gateway. The gateway should be able to pass voice calls incoming over SIP and forward them through Viber/whatsapp 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/whatsapp executables, or by using the Android / 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.

Functional flow

1) Calls originating will send to Viber/whatsapp gateway

2) Viber/whatsapp gateway converts the sip/iax signal to viber protocol

3) the termination number carried from the origination header will be checked by the Viber gateway , if the number is used by Viber/whatsapp and if the number is online, the call will terminated on Viber/whatsapp!.

4) if the number is not used in VIber it sends 503 error and rerouted to other gateways .

Get Free Quotes For A Project Like This

Looking to make some money?

  • Set your budget and the time frame
  • Outline your proposal
  • Get paid for your work

Bids on this Project

  • lawSamuels Profile Picture


    London,  United Kingdom

    British university educated guys, a crackpot team of professionals. Using technology to help make the world a better place.

  • gausselimination Profile Picture


    Bhiwani,  India

    I am presently working in a software firm as analyst and senior developer . I can do for you games , create api, android application, iphone application, windows application , connect hardware like machines, lifts, doors etc. with website, android , iphone , windows application and sms. You can ask me to create any custom application or software. You will be able to contact me any time regarding work and also you will get daily feedback or feedback on alternate days . Sundays will be off days for me.

  • SozoaEnt Profile Picture


    San Diego,  United States

    We are a small business with vast experience in iOS, Android, website, User Interface back-end development, including server-side development.

  • wangbeizou Profile Picture


    Dalian,  China

    Hello, We are a team of skilled dedicated people and our passion is simply to excite ourselves with every project that we do. Our team work experience is of more than 5 years combined while enthusiasm and fresh creative minds is the driving force for our team. Every single team member is the task manager who takes complete ownership and that mentality is set in everyone who works on your project. We are a dynamic learning organization willing to accept changes, challenges, hurdles and see an opportunity out of it both for tasks and clients alike. One for all and all for one is the comradely that is experienced in within the team which shows in our projects where we are always directed to make your story , a successful one.

  • Newforce Profile Picture


    HOUNSLOW,  United Kingdom

    Newforce is a company offering the services of offshore outsourcing and out-staffing mobile/web applications/Cloud Computing/Data Analytics/Insight/Data Migration/ERP development/Server Maintanence,with successful customers in global markets Dubai,Kuwait,Qatar,Saudi Arabia,UK,Europe,USA,Canada,Australia,New Zealand,Singapore,Malaysia,Hong Kong and India. Upon entering Freelancer , we positioned ourselves as the quite-costly company, we will give 1 month free defect fixing support for first time customers. we will give 20% discount for first time customers on first projects. Newforce offers flexible development services with the highest possible quality.

  • AppXonedotCom Profile Picture


    Karachi,  Pakistan

    ◉ News 2015- * Working on Coca - Cola Apps ◉ Appxone (Pvt.) Ltd is a registered mobile APP & Web development company (sharepoint, asp, mvc and php) with 150+ highly skilled IT experts in Mobile and Web technologies especially ---Android,iOS (iPhone,iPad,MacOS) ,PHP,HTML,Game Development frameworks,2D and 3D. == Top Achievements = 1- Coca Cola App in progress [2015] 2- Developers of Top #2 Swedish Mobile App . 3- Management System for Corporates in Malaysia 4- UAE Ministry Technical Partnership Appxone has its own DesignStudio where creative artist Design STUNNING apps and Websites for international clients. Services include but not limited to: ◇Mobile Apps UI UX ◇Website UI UX ◇3D Designs ,Animations ◇Corporate Identity & Advertisements ========= Portfolio ============== Behance Appxone Click "Hire Me" button to discuss your needs .We will not accept the offer and you will not lose money, until we discuss it completely. Our sales executives listen Your needs with attention and Guides you step by step to make this process easy and fun. *** Few can not be disclosed here due to competition,send a message **** ▔▔▔▔▔Why Appxone▔▔▔▔▔▔▔▔▔ ◚ See ratings and Exams section ◚ Delivering Copyright files making you legal owner ◚ Dedicated Project manager and Developers always in communication with you. ◚ 100% Bug free apps ,Quality assured ◚ Tools ,to track your project updates in real time. ◚ Seamless communications through Skype,Hangout,Phone.Email. ◚ After-Delivery Support & Training ◚ Find Appxone Training centre at facebook ◚ Top service provider regional. (ref:Spider Magazine) ◚ Global operations. ◚ 150+ highly skilled IT professionals. ◚ 500+ clients spread across diverse business verticals. ◚ State of the art IT infrastructure *Non-Disclosure Agreement available on request. Note: Not accepting any offers involving real Gambling,Alcoholic beverages,porn,religious promotions.

  • mobileappsites Profile Picture


    jaipur,  India

    We at Mobile Apps/Sites, give you the best possible solutions to turn your business ideas into live with excellent and attractive user interface which will help your idea to attain the heights of success. With more than 5 years of experience, we have achieved the level of success and started our office globally. This achievement is because of our enthusiastic and dedicated team of developers and designers. Our team has a work culture which believes in fulfilment of all IT needs of clients and provide reliable support to clients which forward your business to the next level success. Our developers understand the value of being professional and serving our precious clients with their needs in given time.