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SIP to Whatsapp Gateway

$750-1500 USD

Closed
Posted 10 months ago

$750-1500 USD

Paid on delivery
We need to develop a SIP to WAPP gateway. The gateway should be able to pass voice calls incoming over SIP and forward them through WAPP to complete the call to the called party number. The development platform/operating system is not important. The project should be completed either by using the Linux/Windows WAPP executables, or by using the Android / Windows Phone mobile versions of the application, no matters on the version number. The implementation should return the correct call error codes to the SIP backend, i.e. CALL SUCCESS, BUSY, UNAVAILABLE, etc. For a successful project, we'll select the one, triggering successfully continuous SIP/Viber calls. Functional flow 1) Calls originating will send to WAPP gateway 2)WAPP gateway converts the sip/iax signal to WAPP protocol 3) the termination number carried from the origination header will be checked by the Asterisk gateway , if the number is used by WAPP and if the number is online, the call will terminated on WAPP!. 4) if the number is not used in WAPP it sends 503 error and rerouted to other gateways .
Project ID: 36640856

About the project

42 proposals
Remote project
Active 9 mos ago

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42 freelancers are bidding on average $1,173 USD for this job
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Hi Good afternoon , I have read the brief details on your job listing . I see you have been looking for someone experienced with Asterisk PBX, VoIP, Android, SIP and Mobile App Development. Its been 8 years since I have been working on freelancer.com, I have 9 years of experience doing similar jobs. I would request you to check my profile and review projects, feedbacks of projects related to those skills. Questions: 1. These are all the requirements of your job or do you have more? If yes, Please provide detailed requirements in chat and let me review and get back with queries. 2. Do you currently have anything done or this job has to be done from scratch? 3. What is the timeline to get this job done? 4. Are you open to use 3rd party APIS for it even if they are paid? Why Choose Me? 1. I have done more than 250 major projects only on freelancer.com. 2. I have not received a single bad feedback since last 5-6 years. 3. You will find 5 star feedback on last 100+ major projects which shows my clients are happy with my work. Portfolio: https://www.freelancer.com/u/AwaisChaudhry Timings: 9am - 9pm Eastern Time (I work as a full time freelancer) Please initiate the chat so we could discuss it in detail and we will continue from there. Thanks! Awais
$1,500 USD in 10 days
5.0 (76 reviews)
8.4
8.4
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Hello there! My name is SAPNA and I am a highly specialized Android and Mobile App Development expert. With more than 2% of the entire freelancer community, I am confident that I have the necessary drive, motivation, and energy to see a project through to its completion. I understand from your description that you need to develop a SIP to WAPP gateway. This project should be completed either by using the Linux/Windows WAPP executables or by using the Android / Windows Phone mobile versions of the application no matter on the version number. My experience in this area makes me well suited for this task as I have knowledge in both web development and Android app development. I'm confident that my skillset includes the necessary components needed for a successful project such as call success codes return integrity check etc.. If you'd like more information or would like me to begin immediately please don't hesitate to reach out with any questions or requests for further details.
$1,500 USD in 7 days
4.9 (88 reviews)
7.8
7.8
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Hi there! You need to develop a SIP to WAPP gateway, the gateway should be able to pass voice calls incoming over SIP and forward them through WAPP to complete the call to the called party number, I have seen the project description carefully send me a message for more discussion. As per your project need, I can build your project more efficient with my knowledge and experience. I'm looking to work with you and I'm very sure that you'll feel great to work with me. Along with your project requirement, I'll provide you clean source code with free bug fixing and maintenance. I Have 7+ years of work experience in web and mobile Apps development. I have worked on so many projects like Real Estate, Grocery, Classifieds, Instagram Clone, Taxi, Delivery, food delivery, Inventory Management, Reward, Social Media, On-demand Services provider, Nutrition, school management, Pos, E-commerce, Event booking, etc. I am fully dedicated to doing my work very efficient and less time-consuming. "Looking forward to your positive response please open your chat window to more details" Thanks. regard, Christina
$1,000 USD in 16 days
4.9 (70 reviews)
7.2
7.2
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As a highly skilled software developer, I can help you develop a SIP to WAPP gateway that can pass voice calls incoming over SIP and forward them through WAPP to complete the call to the called party number. I have vast experience in building communication and messaging applications, including integrating with different protocols such as SIP, XMPP and websocket and I can help create a seamless integration between WAPP and SIP. I am familiar with different operating systems, including Linux and Windows and can develop the gateway using these platforms. I can deliver the project using the Linux/Windows WAPP executables or the Android/Windows Phone mobile versions of the application. To ensure that the implementation is accurate, I can ensure that the gateway returns the correct call error codes to the SIP backend, including CALL SUCCESS, BUSY, UNAVAILABLE, etc. For a successful project, I will work to understand your requirements in detail. I have some technical questions that we can discuss to ensure that I can provide an accurate quote and timeline for the project. I have expertise in developing communication and messaging applications with a focus on integrating different protocols and platforms. I am confident that I will be able to help you develop a reliable and efficient SIP to WAPP gateway that meets your needs. You can check my portfolio to see my experience and skills. Feel free to contact me for further discussion.
$1,350 USD in 10 days
5.0 (5 reviews)
6.0
6.0
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Hello I have read your requirement and I am confident that I can help you. Please come to chat so that we will have a detailed discussion. I am having 9+ years of experience and mastery in Mobile App & Web designing, Mobile App & Web development, and backend development. Please come to chat for further discussion. Regards Anju Logical Soft Tech Pvt Ltd, Indore(MP)
$1,425 USD in 20 days
4.9 (28 reviews)
6.2
6.2
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Asif from Einnovention is excited to announce that his team of skilled Android developers and designers is available to assist you with your project! We understand the importance of developing a SIP to WAPP gateway that can successfully handle voice calls coming in over SIP and then forwarding them through WAPP to reach the called party. Our team has experience working on projects using both the Linux/Windows WAPP executables as well as the Android / Windows Phone versions of the application. This range from beginner to advanced levels, so you're guaranteed to find a solution that meets your needs no matter what version number you're using. Additionally, we offer free consultations for all projects before hiring, unlimited repetitions, free service for over 2 weeks as well as over 248 successful completed Freelancer.com projects.
$1,225 USD in 15 days
4.8 (8 reviews)
6.0
6.0
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Hello There, You need to develop a SIP to WAPP gateway. The gateway should be able to pass voice calls incoming over SIP and forward them through WAPP to complete the call to the called party number. I can build this Website , I'm interested to work on this project. I have already developed a similar kind of web app for my client. please connect me on chat I can show you my past experience and work. I'm an expert in this technology like laravel, PHP, MySQL, HTML, CSS, Bootstrap, jQuery, and JavaScript. React.js, Vue. JS, Node.js. I have completed many projects, with domains ranging from eCommerce website, Grocery website, Taxi and Delivery websites Pharmacy websites Doctor website Dating websites, Instagram website , Restaurant website, Buy& Sell business website, healthcare, social website, chat websites real estate website, Thanks Kds Group
$750 USD in 7 days
5.0 (11 reviews)
5.6
5.6
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Hello! My name is Sadat and I am a software development specialist with extensive experience in providing solutions to a wide range of clients across the globe. I understand that you need help developing a SIP to WAPP gateway and would like to offer my services to assist you with this project. I have the skill set necessary to complete this task including Android, Mobile App Development (previously used for similar projects), Website Design & Development, SEO (On-Page & Off-Page), SMM (Facebook, Instagram, LinkedIn, Twitter, Snapchat), Logo/Brand Identity Design, as well as writing content for products descriptions and website content. Additionally, I have extensive experience in logo/brand identity design as well as website design & development which will be beneficial for your project
$1,800 USD in 7 days
5.0 (8 reviews)
4.7
4.7
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Hello there !! I understand you need a *** SIP to WAPP gateway*** and I believe I am the best fit for this project due to my extensive experience in Android and Mobile App Development as well as SIP/Viber calls continuous triggering. With my help, you can expect the successful completion of your project with the return of correct call errors from the WAPP backend. I'm a 10-year experienced Android and Mobile App Developer. I have extensive knowledge in react native, flutter, React JS, Node JS, MongoDB, Laravel, and other similar frameworks. My skills include the development of full-stack applications. I am ready to start work on your project. Let me know if you are interested so we can discuss this further. Please come on the chat board. Best regards Siya Technology
$750 USD in 10 days
5.0 (3 reviews)
4.2
4.2
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Dear Mauricio Gomes G., How is it going well? We would like to grab this opportunity and will work till you get 100% satisfied with our work. We are an expert team which have many years of experience on Mobile App Development, Android, Asterisk PBX, VoIP, SIP Lets connect in chat so that We discuss further. Thank You
$1,100 USD in 7 days
4.3 (6 reviews)
4.3
4.3
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Hi there! My name is Rahul and I'm an Android Native Developer with over six years of experience in designing and developing functional Android apps. I specialize in bringing your ideas to life by leveraging my skills in Java/Kotlin programming, Jetpack Libraries, Firebase integration, Payment gateway integrations, location-aware apps, and eCommerce apps. I understand that you're looking for an expert Android Native Developer with over six years of experience in designing and developing functional Android apps to develop a SIP to WAPP gateway. The project should be completed either by using the Linux/Windows WAPP executables or by using the Android / Windows Phone mobile versions of the application no matter on the version number. The implementation should return the correct call error codes to the SIP backend i.e. CALL SUCCESS, BUSY, UNAVAILABLE etc. For a successful project we'll select the one triggering successfully continuous SIP/Viber calls. If you're interested in my services please feel free to reach out so we can discuss further!
$1,125 USD in 30 days
5.0 (12 reviews)
3.8
3.8
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Hi there, How are you? I can work with your project requirements mentioned. I can definitely pull it off once provided with detailed file of your requirements. Some points are needed to be discussed before starting so lets talk. I have good experience in SIP to Whatsapp Gateway including VoIP, Asterisk PBX, Android, Mobile App Development and SIP. It would be great to have you on board and start it as quickly as possible. So it would be my pleasure to build long term relationship with you. All my skills are related to this particular project. Lets have a detailed chat about this project. Waiting from your end now. Thanks. Rashid Amjad.
$1,500 USD in 20 days
5.0 (4 reviews)
3.6
3.6
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Greetings! As a professional web, mobile and game developer with 18 years of experience, I have worked on a variety of projects. My skills include Unity3D, Unreal Engine, Roblox, PlayCanvas and more. I believe I would be the best fit for this project because of my deep knowledge of Android and mobile app development as well as the other required skills such as React.js, Angular.js, Bootstrap and more. This combination makes me well-suited to tackle this project as it requires both a SIP to WAPP gateway and an implementation that returns the correct call error codes to the SIP backend. With my experience in Android and mobile app development as well as other required skills such as React.js, Angular.js, Bootstrap I am confident that I can complete this project successfully. Hope to meet you via chatting for more detail. Thanks
$1,000 USD in 15 days
5.0 (2 reviews)
3.0
3.0
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Hello there! My name is Gopal and I am a team of experienced developers with 4+ years of experience in mobile app development, web application, website design and Android/iOS mobile App expertise. We understand that you need to develop a SIP to WAPP gateway and we believe we are the best fit for this project. We have the necessary skills and experience to deliver a successful project with continuous SIP/Viber calls being triggered. Our portfolio includes many successful projects so you can be sure that we will deliver exactly what you are looking for.
$1,125 USD in 7 days
5.0 (1 review)
2.0
2.0
User Avatar
Hello Mauricio, my name is Michael and I am an experienced FullStack developer with a proven track record of working in dozens of industries. From my experience, I have developed many different types of applications, including mobile apps, web/desktop applications, and voice over IP (VoIP) systems. I understand that you are looking for someone to develop a SIP to WhatsApp gateway and I believe I am the perfect person for the job. With my extensive knowledge of Android and Asterisk PBX development as well as mobile app development and VoIP systems I am confident that I can complete this project successfully. :)
$750 USD in 7 days
0.0 (0 reviews)
0.0
0.0
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Hello As a mobile expert, I can help you perfectly. I am very confident with my skills and I'd like to help your business by doing my best. Please confirm that I am one of the best fits for you and drop me a message for further discussion. Thanks and Best Regards.
$1,125 USD in 7 days
0.0 (0 reviews)
0.0
0.0
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Hi, I prefer working with Brazil clients. I have perfect confidence for our work. I am an expert have many years of experience on Mobile App Development, Android, Asterisk PBX, VoIP, SIP Lets connect in chat so that We discuss further. Regards
$1,400 USD in 7 days
0.0 (0 reviews)
0.0
0.0
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❤️❤️❤️Senior Software Engineer❤️❤️❤️ Dear Client. Thanks for your job posting. I am pleased to submit my proposal for your upcoming project. I read your requirements very well and understand you need. As an experienced Software Engineer, I am confident that I possess the expertise and technical skill to fulfill all your requirements. My experience with VoIP, Android, SIP, Mobile App Development and Asterisk PBX makes me the ideal candidate for the position. I have a proven track record of successful projects and can guarantee that all code I deliver would be clean and well-documented. For example, I developed the project similar to yours last week and got the high reputation from the client and he promised to contact when he has any project. Now, I have no project so I can devote all my efforts on your project and can work fulltime. So, I look forward to discussing this opportunity with you further and showcasing how my skills and knowledge can help you achieve success. Sincerely~
$1,250 USD in 3 days
0.0 (0 reviews)
0.0
0.0
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Hello Hope you are doing well! This is Abhishek. I have an expert team of experienced Designers & Developers to help you out with the best solutions. We provide quality service for Web, Digital Marketing, and Mobile Development. We assure you a quality service from our side. Your work is in safe hands let's connect for further discussion. Along with your project requirement, I'll provide you with clean source code with free bug fixing and maintenance. I Have 5+ years of work experience in web and mobile App development. I have worked on so many projects like Real Estate, Grocery, Classifieds, Instagram Clone, Taxi, Delivery, food delivery, Inventory Management, Reward, Social Media, On-demand Services providers, Nutrition, school management, Pos, E-commerce, Event booking, etc. I am fully dedicated to doing my work very efficiently and less time-consuming. "Looking forward to your positive response please open your chat window to more details" Thanks. regard, Abhishek
$1,099 USD in 7 days
0.0 (0 reviews)
0.0
0.0
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Dear nexbox Thank you for posting your job requirement for developing a SIP to WAPP gateway. As an AI language model, I can assist you in drafting a response to this job posting. I am interested in this opportunity and believe that I have the necessary skills and experience to meet your requirements. I have experience developing SIP gateways and integrating with third-party applications, including WAPP. To develop the SIP to WAPP gateway, I propose the following approach: Develop a SIP gateway that receives incoming calls and checks the termination number carried in the origination header. If the termination number is used by WAPP and is online, the SIP gateway will convert the SIP/iax signal to WAPP protocol and forward the call to WAPP to complete the call to the called party number. If the termination number is not used in WAPP, the SIP gateway will send a 503 error and reroute the call to other gateways. I am familiar with developing on both Linux and Windows platforms and can work with the WAPP executables or the mobile versions of the application. I am also proficient in Asterisk, which can be used as the SIP gateway. Please let me know if you have any specific requirements or preferences forthe development platform or operating system. I am available to start working on your project immediately and can provide ongoing support as needed. Thank you for your consideration, and I look forward to discussing this project with you further. Best regards,
$750 USD in 7 days
0.0 (0 reviews)
0.0
0.0

About the client

Flag of BRAZIL
Sao Paulo, Brazil
5.0
8
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Member since Jan 2, 2013

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