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Android mobile phone as GSM SIP GATEWAY

$750-1500 USD

Ditutup
Dibuat lebih dari 9 tahun yang lalu

$750-1500 USD

Dibayar ketika dikirim
I need an application that runs on Android phones (4.0 or above) and can send/receive calls through SIP (Can use any sip stack like sipdroid) and forward it to the GSM network. The application should then forward the audio and convert from SIP to GSM and vice versa. Full description below. Please review the attached flow diagram and confirm that you can do the job. I wish to see a demo before accepting this work Please review and message me with considerations. If any requirements are unable to be met, please let me know before we make a deal. Summary The goal of this project is to develop an Android application that can send calls through SIP and forward them to the GSM network AND receive calls from GSM and forward to SIP. Features - Route call from SIP to GSM - Route call from GSM to SIP (preconfigured SIP client) - Convert audio from/to SIP and GSM networks - Able to run on Android 4.0 and up. Application Configurations - Enable or disable the app - Enable to receive calls only on wifi or all networks - Enable to route calls from GSM to SIP (SIP address is configured through an API) - The number to send the call should be configured through an API that is supplied with the APP - Enable to route calls from SIP to GSM - Must run on background - Must be very lightweight to run on small memory devices - Configure SIP Accounts. Sip Requirements - Register on Sip Proxy/Gateway - Receive call authenticated by IP, user/pass or no authentication. - Make calls with or without authentication - Forward DTMF digits using RFC2833 or inband - Use codec G711 and GSM - Be able to use codec G729 - Receive through GSM one 1 simultaneous call and rout it to a predefined SIP client - Be able to store a CSV with all calls made
ID Proyek: 6248140

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20 freelancer menawar dengan rata-rata $3.351 USD untuk pekerjaan ini
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A proposal has not yet been provided
$3.608 USD dalam 20 hari
4,9 (19 ulasan)
8,1
8,1
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A proposal has not yet been provided
$3.333 USD dalam 20 hari
5,0 (28 ulasan)
7,3
7,3
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Hello. I am top mobile developer. I have rich experience about mobile project. If you want to know about my work, please check my portfolio and review. I can start your project immediately, and try to sync timezone with clients so you needn't feel timezone differences as well. I have all sorts of mobile devices, so that we can conduct test on different environment. If you are interested about my past works and services, please send me message so that we can discuss further about your project. Jin
$1.578 USD dalam 20 hari
4,9 (68 ulasan)
7,2
7,2
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Hi. I've read your requirements in detail. I'm an awesome developer who started programming since when I was 12. I'm here to help you and make your idea come ture. Please check my portfolios for my previous works and decide whether I'm good or not. https://www.freelancer.com/u/wangrui8080.html I'm not trying to bragging. But have you seen this on my review? "Wang is a exceptional phone developer both experienced on android and iOS, I'm really happy that I found him, I want to lock this guy forever but am willing to share - if he is bidder on your project , you should feel lucky and forget about hiring anyone else :) He is a perfect combination of being a genius and an extremely hard worker and helped me out till the end right until I was satisfied even with the smallest of detail." Regards
$2.577 USD dalam 20 hari
5,0 (6 ulasan)
5,7
5,7
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Hello sir. I'm a senior mobile developer with 6 years rich experience. I had worked extensively with objectiveC, Java, C++, PHP, XCode, Eclipse to have a strong skill on OOP and beautiful design patterns Worked in Global software app development teams during my last 5 years. So gained rich experience and knowledge in mobile app development. Your project is one of my favorite and qualification. And i have quality-oriented programming habit, and very swift in delivery. My communication and working time is flexible. It would be more specific once we communicate with each other. If you could give me a chance to work, i will do my best and high quality product to realize your ideas into life. I hope we will be good business partner via this chance Regards.
$1.263 USD dalam 20 hari
5,0 (10 ulasan)
5,6
5,6
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A proposal has not yet been provided
$1.184 USD dalam 20 hari
5,0 (13 ulasan)
5,2
5,2
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Hi, i am really happy to read your project description, i really want to work with clients having clear requirements so that we need not to work extra. this is the fixed budget for the app and there no modification(excluding freelancer fee) i can show you my work in demos waiting for your response thanks Shashikant
$1.185 USD dalam 20 hari
4,8 (12 ulasan)
4,8
4,8
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hi , i am ready to work with you on least amount while giving you better quality then any other one !! the reason is just to create a long term realtions with you and your organization !! i am having more then 5years experience of development and designing on various platforrms like : PHP,JAVA,ANDROID,iPhone, .NET,JOOMLA,WORDPRESS,HTML,UI/UX,PHOTOSHOP,C,C++,C#,DRUPAL etc.
$1.159 USD dalam 20 hari
5,0 (1 ulasan)
3,7
3,7
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Hi, I have been through your requirements and it matches our expertise. I am very much interested in working on your project as it seems that we have done something similar. I am not yet confirmed that i will have any more questions or not. But it would be very great if we can discuss project. Our expertise is in - 1) Web Development 2) Mobile Application & games Development 3) Software Development 4) Promotions and Branding with SEO I will be glad to show our portfolio videos better than links. We have a videos taken from simulator. So it would be very interesting if we work together and you can expect a fair and quality work from us. Thanks N
$10.000 USD dalam 60 hari
5,0 (4 ulasan)
2,8
2,8
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Hi, Hope you had a good health I am happy to summarise your project. I have some of the questions in my mind. Reading to your project. I found the idea to be very good and have lot of additions in my mind to suggest you. About Us ------------------------->>>>>> We are Groupittech - A company working since 4 years in the market and working on mobile apps, games, websites, software and SAP implementations. Way of our work -------------------------->>>>>> We understand the idea of the project and than we confirm the project, we develop wireframes, dataflow and Designs. On approval of those we start programming. We are always ready to give unlimited iterations. Finally on completion of project we give test reports with test cases. We deliver full source code and copyright so the project. Update ------------------>>>>>>> We give updates twice a week and one developer will constantly work on changes suggested in feedback. We will give you build to check on your side. Portfolio ------------------------>>>>>>>>> We will show the portfolio relevant to your requirements as we do have huge portfolio. Looking forward to your reply and hope we can work together. I have only two words to say "TRUST ME" Thanks M
$15.000 USD dalam 90 hari
5,0 (1 ulasan)
2,7
2,7
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Hello sir My name is chingnan and I'm writing with regard to my desire for your job. Your job really caught my eyes because my experience and expertise are perfect match for your job. I'm a global lead mobile app developer who is expert at creating the iPhone and Android applications with Regular Education and Formal Training by IBM. From 2007, I have been working as an independent mobile developer because I've got a great impression from mobile. With the technical background and enthusiasm for mobile, I could achieve the solid knowledge of the iOS & Android platforms and extensive frameworks for 5 years. Also, I learned to follow the International Standards for Quality Assurance and I'm aiming at building the highest quality apps more competitive than others in the market. If you hire me, I will show you my high skill and all my passion. Best regards ching nan
$1.500 USD dalam 20 hari
4,6 (1 ulasan)
2,0
2,0
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A proposal has not yet been provided
$1.184 USD dalam 45 hari
0,0 (0 ulasan)
0,0
0,0
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Hi, thanks for posting your project here. Each project is unique and it is very important for us to understand what your vision is. Let me know what you are free to have a quick chat and perhaps we can make some recommendations based on our experience as well. Thanks, hope to speak to you very soon!
$1.184 USD dalam 20 hari
0,0 (0 ulasan)
0,0
0,0

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Bendera GERMANY
Germany
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Anggota sejak Jul 29, 2014

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