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.

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

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Tietoa työnantajasta:
( 14 arvostelua ) london, United Kingdom

Projektin tunnus: #18108909

Myönnetty käyttäjälle:


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 Lisää

$25 USD 1 päivässä
(21 Arvostelua)

5 freelanceria on tarjonnut keskimäärin %project_bid_stats_avg_sub_26% %project_currencyDetails_sign_sub_27% tähän työhön


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 Lisää

$1000 USD 1 päivässä
(12 arvostelua)

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 Lisää

$25 USD 1 päivässä
(5 arvostelua)

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

$3500 USD 14 päivässä
(1 arvostelu)

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 Lisää

$15 USD 1 päivässä
(0 arvostelua)