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Need professional VOIP OTT App -- 2

Hi Friends,

I need professional mobile had experienced working with OTT APP (have features call look like messenger/Viber/Whatapp) , can make call and wakeup call anytime when receive push notification of server.

We use SIP Server ( Freeswitch) to develop system.

Each time have call from user A -> user B, system will push notification to user B

User B install mobile app ( Android/IOS) and wakeup and receive call.

We can make this flow work with some device but not all device work smooth, some device can not wakeup ( android, ios too)

i think the app like that ( voip ) need some special skill and tech to implement.

My requirement: please see the attact file

Skills: Mobile App Development, Android, Asterisk PBX, VoIP, iOS Development

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About the Employer:
( 3 reviews ) Ho Chi Minh, Vietnam

Project ID: #29472461

16 freelancers are bidding on average $6271 for this job

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hitech10

Hello, I and my team can cater your entire mobile app needs to expedite your business with an excellent ROI. With an experienced team of 55+ developers and 500+ projects delivered till date, we work on all cutting-ed More

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r4rony

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$4000 USD in 60 days
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ctinfotech1

Hello Dear Client, Greetings! I have read your complete requirement set and I can surely help you in this project. We are a team of Mobile app developers who are well versed with Native, Cross-platform, React Native More

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6.7
PrashantR6

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$3000 USD in 17 days
(40 Reviews)
5.9
pinesucceed01

Dear Hiring Manager, I have read all your requirements and what you want to do that you have given the attachment have seen it all . Let's discuss it on chat more about the project .

$5000 USD in 7 days
(28 Reviews)
5.4
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irfanui

Hi There, This is Mohammad from brief I summarize that you need a Need professional VOIP OTT App -- 2 Right? Sure i'll provide you with Quality Work. Please award me the project so that we can discuss it more. I am a F More

$5000 USD in 21 days
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hasinmeir

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$5000 USD in 40 days
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4.0
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tgltech

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