I need a mobile app to make voice calls over IP (VOIP/SIP), I will provide the server, i need someone to develop and design the app dialer.
The app is basic, does not include accounts, refills, payments etc.... It only has mobile number verification by sms.
I am adding more details so you could adjust your offers and check if you have matching skills:
About the developer/freelancer:
- The developer should write in IOS native language
- VOIP experience is a must, and we need to select the best library (WEBRTC, PJSIP) and codec (OPUS?) for the best quality voice calls even in bad coverage, low bandwidth areas
- Server side/backend should be included in the solution
- Android knowledge is a plus (I will later build under android after IOS)
- Developer should have a portfolio in VOIP or messaging with voice/video
About the app (more details will be provided once the project is awarded)
- App should support ios 8 and above, Iphone 5s and above.
- APP should support NAT, and work on public and private IPs
- Once first downloaded, a user needs to register only with his/her phone number (like whatsapp), and there will be sms verification, with limitation on retries (i can buy credits on any sms provider you wish)
- After registration, a dialer will open, and a user can make a call by dialing a number, or by choosing a number from the iphone's phone book.
- The system should automatically normalize phone numbers, as some of them could be dialed in international or national format.
- If the called party does not have the app installed, an information alert should be displayed to the caller , and the called party should receive an SMS with a predefined text
Needs to have basic reporting/stats capabilities, there should be a database (number of users, called numbers, phone books, registered, unregistered users, etc...)
All source code should be provided.
74 freelancer đang chào giá trung bình $2304 cho công việc này
Bid Summary Please contact me. Project Requirements I can complete the project. Relevant Skills and Experience mobile app development Proposed Milestones $2222 USD - budget