Android/iPhone SIP Dialer

I have a VoIP platform for which I need an Android & iOS app (phone/tablet). There is a popular VoIP phone that you can reference for the overall design that has about 5 screens. (Messages; Recent; Contacts; keypad; About; Settings Invite to Use; Privacy).

The app should integrate with the platform I built (OpenSIPS/Asterisk) and pull/push data via a SOAP API. The main functions of the app will include:

1. Making & Receiving VoIP Calls Over 3G, WiFi, GPRS

2. Should not kill the battery of the mobile device

3. Address Book Integration with local Phone Address Book AND the platform

4. User Credentials Save / Change Username & Password

5. Volume Control

6. Protocol SIP (RFC 3261)

7. Media Support RTP (Real Time Transport Protocol) & RTCP (RTP Control Protocol)

8. Transport Mode TCP, User Datagram Protocol (UDP), TCP to UDP Interworking

9. Codecs [url removed, login to view], [url removed, login to view], AMR (Adaptive Multi-Rate Compression), iLBC, [url removed, login to view], GSM.

10. Network Address Translation (NAT) Traversal Through Encryption & STUN

11. Voice Quality Silence Suppression, Packets Loss Management

12. DTMF - (Dual Tone Multifrequency) Generation & Detection (RFC 2833)

13. Call Status Indicator Displayed on phone screen

14. Call History, Call Detail Records, Current Account Balance, Current Account Balance, Current Account Minutes Remaining

15. Speakerphone

16. SMS (through the platform)

17. App will be in English, but should allow for multiple language support by design

18. App should voice and SMS encryption

The app will be marketed on the Google Market/Play and on iTunes, so it should be designed to those specifications.

I would prefer someone that has an "innovative point of view". The VoIP platform and business was designed and conceptualized to allow for multiple SIP phone types to be connected to it and perform different things. The intent here is to find a good developer to build this first project and build more in the future.

NOTE: There will be a focus on front end design clarity (which should be easy because we are using the other VoIP phone as a reference) but the code needs to be clean and error free (I can help test the apps). If you are not a strong developer that can put out well documented code that can be built upon, please do not bid.

Skills: Android, iPhone, Mobile App Development, Wireless, XML

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About the Employer:
( 0 reviews ) Oman

Project ID: #5868817

28 freelancers are bidding on average $3222 for this job


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Hello, Greetings! I have been through with your requirement , we have developed the VOIP/SIP based solution for iPhone/DROID and bb as well, in a next level of communication we are good to show you the demo as w More

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HI I've read your requirements in detail. I'm kick-ass amazing phone developer who is not afraid to dig in and make things happen! Iím available for communication 15+ hours a day including voice chatting. I will be mor More

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Hello, Greetings of the day! I take pleasure to represent MYZEAL IT Solutions an ISO 9001:2008 (QMS) compliant organization; MYZEALIT Team has expertise in iPhone, Android, Blackberry, Symbian, Windows Mobile App More

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Hi, thanks for your job posting. I’v good skill on iOS and android app developing with 6 years XP. ESPECIALLY, I MADE ALREADY VERY SIMILAR SAMPLE APP BEFORE. Please check my portfolio and touch base with me. I a More

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Greeting"s From Foxy Technology 7+ years of Rich Experience in Mobile Development Thank You For Reading Our Project Proposal. ==>Project Title - -IOS Android Sip Dailer ==>Lets discus More

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Dear Hiring Manager, Thanks for your job posting here. I have read your job posting and I am really interested in your project. I have developed lots of apps before and most of them had been published to app store More

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"IOS & Android Experts With Strong Freelance Profile" Hello, This is Jitendra from WsCube Tech, I have studied and understood your Project, in detail. Project covering trailing points; Assure to Develop More

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