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SIP compatible cross platform telephony library

€1500-3000 EUR

Closed
Posted about 9 years ago

€1500-3000 EUR

Paid on delivery
Regards, We're in a need of developing a SIP compatible cross platform telephony library or API if you will, which can be easily integrated into existing software solutions. Therefore we're looking for an expert coder with strong knowledge of SIP protocol and cross platform development. The features we need the library to have are as following, but not limited to: -dial/receive calls -call recording -call transfer -call forwarding -call conference -send DTMF tones -detect DTMF tones -mic and speaker volume and mute control -multiple lines support -at least G711 U-Law, G711 A-Law, GSM 6.10 codec support -PLC -noise cancellation, silence detection, autogain and other standard softphone features found in most softphones on the market -and basically everything else a SIP siftphone needs to have You can take a look at [login to view URL] or [login to view URL] or similar products as a reference on what we need, except we need less features and we need it to work on Linux. The exact list of features will be discussed and agreed upon before development phase starts. We're opened to any platform/technology and third party library usage as long as it's license allows us to use it in closed source commercial product. Now, since this project is critical for our company, please don't bid if: -you're not 100% sure you can deliver what we need as deliverables will be thoroughly tested by our technical stuff before any payment is made -you can't provide later support, bug fixes, etc. -you're not interested in a long term business relationship as this project will require maintenance as well as upgrades in the feature Please state the following in your bid: 1. Which platform/technologies/libraries would you use and why 2. Would you suggest web browser or desktop application and why 3. What is your previous experience, if any, on similar projects 4. Price and time frame estimation 5. What would be your monthly fee for ongoing support after development phase The bids which don't contain answers to these questions, won't be considered. Thank you for your time.
Project ID: 7285054

About the project

26 proposals
Remote project
Active 9 yrs ago

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26 freelancers are bidding on average €2,918 EUR for this job
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Hello, I have 6 years experience in mobile app development and have already published lots of professional apps in app store and play store. They include social apps(Censorgram), video streaming app(vConnect), Quiz app(Trivia4Friends), Daily Question App(OpinionSlice), Render app(Real Property), Emoji app(Wallstreet, Sexy Emojis)… I always work for long term relationship by providing high quality app within the deadline. Quality is the one I can guarantee in my work. I am available for 8+ hours per day and always ready to discuss and solve your new problem. You can refer my work history for more detail. Thanks
€2,368 EUR in 30 days
5.0 (68 reviews)
7.9
7.9
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Dear sir. To get me in here, will be the success of your business and life in the world. The OASIS of Desert will not be good result than you got me in here. I am a high quality and top mobile developer. I have rich experiences in developing mobile app for over 5 years. Before felling in love with mobile apps, I had worked extensively with Java, Objective C, Eclipse, XCode, C/C++ to have a strong grip on OOP and design patterns. Worked in domestic/global app development teams during my last 5 years, gained rich experience and knowledge in mobile app development. This project is one of my excellent skills and full experiences. I will provide high quality result and fast service within your budget, surely. My working time and communication will be flexible to meet your requirement. Let's go with me! Best regards!
€2,368 EUR in 30 days
5.0 (30 reviews)
8.0
8.0
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Hello Thanks for your good project. I have seen your description carefully. There is no any risk for me at your project. My ultimate goal is to build a long lasting relationship with my clients. I am looking forward to hear something positive from you and working on this project. If you hire me, you will get more benefits than you expected from the other freelancers. I'm ready to start your work and we can discuss your requirements via Voice conversation. please send me a private message to discuss details. Thanks.
€2,368 EUR in 30 days
5.0 (27 reviews)
7.5
7.5
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A proposal has not yet been provided
€2,368 EUR in 30 days
4.7 (122 reviews)
8.0
8.0
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Hi I understand what you require and purpose in your position. I have been working on Mobile app development till now, so I have enough experience and ability to do your project. You can have confident about me from my portfolio and work history. You will not disappoint to me with my quality work and after services. Please check the client's review in my work history carefully, and if you feel I'm good candidate, Please call me. I'm here and ready to discuss with you with fluent Voice. Thanks.
€2,105 EUR in 20 days
5.0 (26 reviews)
7.3
7.3
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Hi there, I'm a mobile applications development team manager and a developer myself too, and I'm very interested in your job post involving these skills. We have recently worked in iOS/Android/Windows Phone apps development and we have also User Interface design and Graphics design skills too. Our team also has so much experiences in Web/server development. We have consistently delivered projects on time and under budget, which has earned us many positive ratings, as you'll see in our work history, a number of our projects are in our freelancer.com portfolio. Some of our works are very similar to your requirement. We are available to chat via freelancer.com chat tool and your suggested chat tool, and would be happy to set up a convenient time to discuss the application you're moving and some ideas about the safest way to get it into the cloud. Thanks, Quy.
€3,333 EUR in 30 days
4.8 (70 reviews)
7.6
7.6
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We are very interested in this project. I have read your above description and i think its well within our range to execute this is in a good time frame so would you be kind enough to message me so we can have a fast and understanding agreement. If possible we could arrange discussion session to answer all your questions/requirements.
€3,333 EUR in 45 days
4.8 (29 reviews)
7.7
7.7
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Dear sir I am a passionate mobile developer with 5+ years rich experience. Worked in domestic/global app development teams during my last 5 years, gained rich experience and knowledge in mobile app development. My strong skills are + iOS 7,8 development(iPhone & iPad) + Swift; + Android 2.3 - 4.2 development; + GPS, Google Map, Location Tracking + Front end and Back end for mobile services on PHP, .Net, Parse; + Payment Gateway(Stripe, Paypal, Braintree) + XML, SOAP, RSS Feed + Social Networking (Facebook, Twitter, LinkedIn) + Github I can provide quick & quality result within your budget. My communication and working time will be flexible to meet your requirement. I will do my best in order to realize your ideas into life.
€2,368 EUR in 30 days
4.8 (18 reviews)
6.8
6.8
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Hey, I would like to have a detailed discussion about the, - design - functionality - user roles and behavior - App flow - technology / dev environment, WHY CHOOSE US -Well versed with latest Technology development -User friendly interfaces Graphics -Continuous technical support 24*7 customer support -Ready to sign NDA Seeking for an appointment. Thank You.
€3,000 EUR in 30 days
4.7 (21 reviews)
6.8
6.8

About the client

Flag of SERBIA
Belgrade, Serbia
5.0
1
Member since Sep 4, 2003

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