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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.

Kĩ năng: Android, iPhone, Mobile App Development, Objective C, VoIP

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Về Bên Thuê:
( 14 nhận xét ) london, United Kingdom

ID dự án: #18108909

Được trao cho:

attique2010

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 Thêm

$25 USD trong 1 ngày
(21 Đánh Giá)
5.0

5 freelancer đang chào giá trung bình $913 cho công việc này

eliteapps

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 Thêm

$1000 USD trong 1 ngày
(12 Nhận xét)
5.4
wangdeveloper

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 Thêm

$25 USD trong 1 ngày
(5 Nhận xét)
3.5
StrongDecs

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

$3500 USD trong 14 ngày
(1 Nhận xét)
1.7
NovelVasilyev201

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 Thêm

$15 USD trong 1 ngày
(0 Nhận xét)
0.0