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build SIP Voip feature on top of an existing IOS App source

we have an IOS native app with full source code connecting to our online shop, we want to add calling feature within the app to call our call center. We have a fully functional PBX and the calls will be purely SIP calls and also some chat with call center. we need you to buil the calling part on top of the app.

Evner: Android, iPhone, Mobile App Development, Objective C, VoIP

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Om arbejdsgiveren:
( 14 bedømmelser ) london, United Kingdom

Projekt ID: #18108909

Tildelt til:


I am responding to your job for the Mobile Application Developer job available at Freelancer. I have proven success with developing applications for IOS and android phones specially VOIP apps. I am available full tim Flere

$25 USD på 1 dag
(21 bedømmelser)

5 freelancere byder i gennemsnit $913 på dette job


We are the top linphone customization team in the market. we dealt with top companies of telecom. We can integrate linphone into the requirement if yours. are these the features you are looking for Calling, Mess Flere

$1000 USD på 1 dag
(12 bedømmelser)

Dear client. I am very interesting about your JOB post and i have recent work history whichone is very like your's. i have 3 year’s of experience about mobile team manager. I have over 6+ years experience in iOS and Flere

$25 USD på 1 dag
(5 bedømmelser)

Greetings, I propose fastest delivery over top software quality Please message if the proposal makes you interested Thanks,

$3500 USD in 14 dage
(1 bedømmelse)

Hello. I throw your problem and understand you. I start freelancer latest but I have some experience for iphone. I hard to work, and then shall show you simple App. I have been worked in my company with online sh Flere

$15 USD på 1 dag
(0 bedømmelser)