SIP Calling Gateway to WHATSAPP

€250-750 EUR

Closed

Posted

7 months ago

€250-750 EUR

Paid on delivery

PLEASE DO NOT OFFER TO MY PROJECT BEFORE READING. IF YOU READ THE PROJECT PLEASE TYPE "YES I READ YOUR PROJECT" ON YOUR OFFER, AND DO NOT SPEND TIME IF YOU ARE NOT SURE FOR SOLUTION, PLEASE. !! DO NOT TRY TO INCREASE YOUR OFFER WITH CHAT. !! PUT YOUR EXACTLY AND LAST OFFER. if you have questions please ask and share your suggestions. ======================================================= if you did a similar project before please share with us some pictures and information. you will be our priority. Hi, The WhatsApp channel allows consumers to connect with brands and brands to connect with consumers from the WhatsApp app on their smartphone. We need to develop a SIP to Whatsapp voice gateway to send some of the calls from our PBX. The gateway should be able to pass voice calls incoming over SIP and forward them through WhatsApp to complete the call to the destination's WhatsApp number. - We will provide the phone number/phone numbers and pictures for the WhatsApp account. - The project should be multi-channel. I would like to able to start multi-calls ( you can run multi WhatsApp account with multi-phone number or can use just one WhatsApp account with multi calls. ) - The development platform/operating system is not important. you can use Asterix, Freeswitch, FreePBX vs... - The implementation should return the correct call error codes to the SIP backend like CALL SUCCESS(200 OK), BUSY(486 Busy Here), UNAVAILABLE(503 Service Unavailable), etc.... to try other rounds on the other SIP Switch. Functional flow 1) Calls from PBX/sip gateway will be sent to WhatsApp gateway 2) WhatsApp gateway converts the SIP to WhatsApp protocol 3) If it is necessary, there are multi-channels WhatsApp account in the WhatsApp gateway and your code selects any of the available accounts to make a call. You can run a multi WhatsApp account/channel with a multi-phone number in the WhatsApp gateway or you can use just one WhatsApp account/channel(if it is possible multi calls from an account.) for multi calls on the same time. 4) if all of the WhatsApp accounts occupied send the error code back "600 Busy Everywhere" or "503 Service Unavailable". 5) if the number is not used in WhatsApp if there is no associated Whatsapp account for the called number. then it sends "503 Service Unavailable" error and we will reroute to other gateways. 6) The called number carried in call header will be checked by the WhatsApp gateway, if there is an associated WhatsApp account with this number and the number is online, the call will be terminated on WhatsApp. 7) If the call is successfully completed or called number does not answer, then call will be disconnected. 8) The system must return the appropriate sip error code if the call is busy or no answer. 9) source code has to be shared with us with explanations for debug purposes in the future.

Asterisk PBX

Android

VoIP

Mobile App Development

PHP

Project ID: 37328186

About the project

24 proposals

Remote project

Active 6 mos ago

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24 freelancers are bidding on average €718 EUR for this job

@AwaisChaudhry

Hello Good evening , I hope you are doing great. Just finished reading the brief details of your job . I see you have been looking for a freelancer who has experience with Android, Mobile App Development, Asterisk PBX, VoIP and PHP. Upon the first look I feel confident about getting it done because of having experience doing similar jobs My Experience? I have 9 years of experience working with those technologies. Its been 8 years since I have been working on freelancer.com, Please review my profile. Check: Skills, Portfolio, Customer Feedbacks. 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 US Time I would like you to start the chat so we could discuss it in detail and we will continue from there. Thanks! Awais

€750 EUR in 10 days

5.0

(120 reviews)

8.6

@ahmadayaz

I propose developing a SIP to Whatsapp voice gateway for your PBX. Here's an overview of the approach: 1) Create a mechanism to convert SIP calls to Whatsapp calls. 2) Enable multi-channel functionality for simultaneous calls. 3) Integrate with platforms like Asterix, Freeswitch, and FreePBX. 4) Provide accurate error codes for routing of calls. 5) Implement routing to check Whatsapp account availability. 6) Terminate calls on Whatsapp if an associated account is online. 7) Properly disconnect calls upon completion or no answer. 8) Return relevant SIP error codes for busy or unanswered calls. 9) Provide complete source code and explanations for future maintenance. I have extensive experience in Full Stack Development and have successfully delivered similar projects in the past. Let's discuss your project in detail.

€675 EUR in 5 days

5.0

(304 reviews)

8.7

@corpmember29

( "YES I READ YOUR PROJECT" ) Hi There! You need a SIP Calling Gateway to WHATSAPP, 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

€1,100 EUR in 10 days

4.9

(80 reviews)

7.4

@Apurva510

Hello, My name is Apurva and I am a full stack developer with 8 years of working experience. I understand from your description that you need a SIP to WhatsApp voice gateway to send some of the calls from your PBX. The gateway should be able to pass voice calls incoming over SIP and forward them through WhatsApp to complete the call to the destination's WhatsApp number. I would like to offer my services for this project. I am confident that with my expertise in Android, Mobile App Development, PHP and other relevant technologies, I can provide the best solution for your needs. My commitment to timely delivery of quality projects along with commitment to customer satisfaction make me the right fit for this project. If you would like me to discuss further please don't hesitate to reach out directly. Please feel free to let me know if you have any additional questions or would prefer another format for discussing this project. Thank you

€500 EUR in 8 days

4.9

(32 reviews)

6.2

@MilosDelic0203

Dear Youssef E., How is it going well? We went through your project description and it seems like our team is a great fit for this job. We are an expert team which have many years of experience on PHP, Mobile App Development, Android, Asterisk PBX, VoIP Lets connect in chat so that We discuss further. Thank You

€500 EUR in 7 days

4.7

(20 reviews)

5.8

@debkumarlab

Hey, I have checked your requirement details, as I have proficiency to do your project on time. I am experienced too. So let's connect and start the project. Best Regards, Dipanjan.

€900 EUR in 7 days

4.4

(42 reviews)

6.4

@Demenntor

Dear Client, Thank you for the opportunity to work on your SIP to WhatsApp voice gateway project. I have thoroughly reviewed the requirements and specifications, and I am confident that my team and I can deliver a high-quality solution that meets your expectations. Please feel free to reach out if you have any additional questions or require further clarifications. We are committed to providing you with a robust and reliable SIP to WhatsApp voice gateway that meets your specific requirements. Best regards, Lalit

€700 EUR in 7 days

4.9

(25 reviews)

5.2

@fivezeroinfo

YES I READ YOUR PROJECT! Greetings! I hope this proposal finds you in high spirits and ready for some quirky and innovative solutions. I understand your need for a SIP to WhatsApp voice gateway, and I assure you that I am the right person for this job. Why? Well, I've got the skills, the experience, and a knack for turning your wildest dreams into reality. Imagine a world where your PBX calls seamlessly transition to WhatsApp, where multi-channel communication becomes a breeze, and where error codes are as witty as your sense of humor. With my expertise in PHP, Mobile App Development, Android, Asterisk PBX, and VoIP, I will create a gateway that not only connects your calls but also brings a smile to your face. I'll make sure to provide you with a multi-channel solution, giving you the power to run multiple WhatsApp accounts with multiple phone numbers or simply use one WhatsApp account with multiple calls. The choice is yours! Rest assured, the development platform/operating system is of no concern to me. Whether it's Asterix, Freeswitch, FreePBX, or a combination of all three, I'll handle it like a pro. So, let's embark on this whimsical journey together. I'll convert SIP to WhatsApp protocol, check for associated WhatsApp accounts, and even gracefully handle situations where all WhatsApp accounts are occupied (cue the "600 Busy Everywhere" error code). And fear not, for I shall share the source code with you, complete with explanations for future debugging adventures. Now, let's chat further and discuss the pricing and timeline details. Connect with me, and let the magic begin! Best regards,

€270 EUR in 7 days

5.0

(1 review)

4.9

@devbaloni1983

***** React Native expert***** I have more then 15 year’ experienced in development and expert in Mobile Development. As i am expert, I can build it according to your requirements. Because I have a lot of the experiences about these fields, I can build your project as soon as possible perfectly. I offer excellent software quality work and provide the best support on your project. If you give me this job, I will do my best to finish your job until your timeline. If you want to see my past works, I can show you my past works right now. Ready to discuss with you about the task now. Thank you for the reading.

€250 EUR in 7 days

4.8

(17 reviews)

4.6

@imumermalik

Dear Client, I have read your project requirements and I am confident in my ability to develop a SIP to WhatsApp voice gateway for you. The solution I propose is a robust and efficient system that seamlessly connects your PBX system with WhatsApp. Here's a concise overview of how the gateway will work: 1. Incoming calls from your PBX/sip gateway will be directed to the WhatsApp gateway. 2. The WhatsApp gateway will convert the SIP protocol to the WhatsApp protocol. 3. Your code will select a WhatsApp account from the gateway based on availability. 4. If all accounts are occupied, the system will return a "busy" or "unavailable" error to the SIP backend. 5. If the called number is not associated with a WhatsApp account, the call will be rerouted to other gateways. 6. The WhatsApp gateway will check if the called number is associated with a WhatsApp account and if the number is online. If so, the call will be successfully terminated on WhatsApp. 7. Upon completion or no answer, the call will be disconnected. 8. The appropriate SIP error code will be returned in case of a busy signal or no answer. 9. The complete source code and detailed explanations will be provided to facilitate future debugging. I am confident that my experience in Flutter and Laravel, along with my track record of winning contests and awards, make me the perfect fit for this project. I follow best practices in software development and believe in writing tests for code to ensure quality and reliability. I would love to discuss your project further and provide a more detailed solution. Please let me know when you are available to schedule a meeting. Thank you for considering my proposal. I look forward to working with you and delivering a top-notch SIP to WhatsApp voice gateway. Best regards, Umer Malik

€675 EUR in 5 days

5.0

(1 review)

4.0

@AmazingEngr76386

Hello, my name is Adnan Gohar and I am an experienced and results-driven professional with extensive knowledge in project management, strategic planning, marketing, data analysis, and Android development. After reviewing your project description for the SIP Calling Gateway to WHATSAPP project, I believe I am the best fit for this job due to my extensive experience in project management, strategic planning, marketing, data analysis, and Android development. I am confident that my skillset can be used to create the SIP Calling Gateway to WHATSAPP required for your project. My expertise in project management has allowed me to successfully lead cross-functional teams and deliver complex projects on time and within budget. My strong organizational skills, attention to detail, and ability to communicate effectively with stakeholders have helped me navigate complex projects and ensure successful outcomes. Additionally, I have a deep understanding of strategic planning and have helped businesses develop and execute successful growth strategies.

€500 EUR in 7 days

3.9

(6 reviews)

5.0

@Shaiwan

Hello, I have read your requirements and I got to know you are looking for mobile app development for both android and ios and I am expert in app development and I can deliver on time with the quality. I have spent a total of 10+ years working in both mobile technology. I developed apps for leading solutions for all major industries, I am sure that if you give me a chance, I won't disappoint you with my skills and expertise. I have successfully delivered many apps and making my clients very happy. >-< Cross-Platform App Development (React Native / Ionic / Flutter) >-< Native App Development (Swift / Objective C for iOS and Java for Android) Let’s get connected on Chat to discuss this further in detail. Please connect with me in chat Regards Shaiwan

€250 EUR in 16 days

5.0

(4 reviews)

3.2

@ChainSmokers

Hi, Youssef E.! I have thoroughly read and understood your project description for developing a SIP to WhatsApp voice gateway. I appreciate the comprehensive requirement you have provided. Before proceeding further, I have a couple of questions: 1. Are you looking for a specific programming language for the development of this gateway, or is the choice of language flexible? 2. Do you have any preferences or requirements regarding the development platform/operating system to be used? Based on the project requirements you have outlined, I propose to develop a robust and flexible SIP to WhatsApp voice gateway. The gateway will seamlessly pass voice calls incoming over SIP and forward them through WhatsApp to the destination's WhatsApp number. It will support multi-channels, allowing you to run multiple WhatsApp accounts with multiple phone numbers or utilize a single WhatsApp account with multiple calls. To ensure smooth functionality, the implementation will return the correct call error codes to the SIP backend, such as CALL SUCCESS (200 OK), BUSY (486 Busy Here), UNAVAILABLE (503 Service Unavailable), etc. This will enable you to try other rounds on the other SIP Switch. Regarding payment terms, I am flexible and open to discussing options that align with your budget and expectations. Let's connect in chat to further discuss pricing and timeline details. I invite you to schedule a meeting or continue the conversation through chat to address any further questions or concerns you may have. I am excited to collaborate with you on this project and deliver a high-quality solution. Best Regards, Rahul

€460 EUR in 7 days

5.0

(2 reviews)

2.9

@zvinogrodskis

Hello, My name is zigmas and I'm a web and mobile expert with 8+ years of experience. As a professional developer, I value quality and credit more than budget when it comes to development projects. I have solid experience in web development and have built and deployed several websites alone. I understand you need to develop a SIP calling gateway to send some of the calls from your PBX. The gateway should be able to pass voice calls incoming over SIP and forward them through WhatsApp to complete the call to the destination's WhatsApp number. I would be delighted to help you with this project! With my extensive experience in web development and mobile app development, I am confident that I can provide the solution you're looking for. Plus, my platform selection doesn't matter as long as you get exactly what you need when it comes to functionality - both on the development side as well as while implementing it into your system.

€500 EUR in 7 days

5.0

(3 reviews)

2.2

@DigitalNightOwl8

Hello, I READ YOUR PROJECT. We have Something similar to show you. We have delivered similar projects in the past and we can show you our work portfolio as well as showing casing our work. We have dedicated team for this work with 10+ years of working experience in Software Development. Thanks and Regards, Prakhar

€725 EUR in 10 days

5.0

(1 review)

1.9

@vadymperebitiuk

Youssef E., I am extremely interested your project SIP Calling Gateway to WHATSAPP and It seems great! I am an expert who has many years of experience on PHP, Mobile App Development, Android, Asterisk PBX, VoIP so I am sure that I am a god fit for your project. And as an expert, I have enough energies and powers to do your projects. Please come over chat and discuss your requirement in a detailed way. Thank You

€570 EUR in 7 days

0.0

(0 reviews)

0.0

@topdevbluepeak20

Hi, Youssef E.. This is Moanan from US. I am a software developer with 5 years of experience and I believe I could be the best fit for you and your project( ------------- SIP Calling Gateway to WHATSAPP -------------- ). I have experience in this kind of project making me more than proficient to provide you with an excellent service on this matter. We can discuss about project in via chat. I am providing 24/7 service. Warm Regards. Moana.

€400 EUR in 5 days

0.0

(0 reviews)

0.0

@MuskMaven

Hello there! My name is Bajrang, and I'm a full-stack developer with over 10 years of experience in the tech industry. I understand that you're looking for a way to send calls from your virtual PBX through WhatsApp so that consumers can make calls from the app.

€500 EUR in 7 days

0.0

(0 reviews)

0.0

@dipikagothi11

Yes I read your project Hello, My name is Dipika, and I'm a seasoned Full Stack Developer with a strong linguistic aptitude. My experience primarily revolves around collaborating closely with front-end web developers specializing in PHP, WordPress, and Laravel services. My skills extend across a robust foundation in both frontend and backend technologies, encompassing PHP, Laravel, Node.js, and WordPress. In addition, I possess a deep understanding of SEO best practices. I'm enthusiastic about delving into your project to explore its potential. I have great confidence in my capabilities to successfully complete assignments. My track record demonstrates a commitment to efficiency and adherence to project timelines. Moreover, my meticulous attention to detail ensures precision in project execution. Please let me know more about your project or how I can be of assistance.

€500 EUR in 7 days