Android APP (GSM to VoIP gateway)

In a scenario where there is:

- A Asterisk VoIP server (provided to you)

- A phone extension connected to the Asterisk server (provided to you)

You should build an Android APP that connects to the Asterisk Server and is able to do the following:

A) Receiving a GSM Call and Making a VoIP CALL

1) Automatically answer phone calls

2) Take GSM Audio call and create a voip IAX2 protocol call to a voip server

3) The app should receive the audio from the GSM call, encode it and send to the voip server

4) The app should receive the audio from the VOIP call, encode it and send to the GSM call

B) Receiving a VoIP Call and Making a GSM CALL

- The APP should be listening to a "mqtt" topic on a server and receive instruction on what to do.

- If the instruction is to "PlaceCall", it should receive the destination number and:

1) It should establish a GSM call to the destination

2) Execute the same steps A2, A3 and A4


- The Android app mentioned above

- An Asterisk configuration to: 1) receive the call and redirect to an extension and 2) receive a call from the extension and redirect the call to the Android APP

Generic Notes:

- The app should be Android Native

- The backend should run on Linux Ubuntu 18.04 (you can only install system packages that are distributed within the Ubuntu official packages - all other packages must be installed within the project).

- You should work over slack (not Freelancer chat)


- 10% on start after signing NDA

- 50% on first full test (no exception): all features must work (even if with bugs)

- 40% on full delivery

Квалификация: Android, Mobile App Development, VoIP, Linux, Asterisk PBX

Показать больше freeswitch gsm voip gateway, caller hide gsm voip gateway, android app gsm skype, android app elastix voip, gsm voip gateway asterisk android, android app gsm calls, gsm voip gateway gui, gsm voip gateway asterisk pbx, iphone gsm voip gateway, gsm voip gateway hide mobile number, gsm voip gateway avoid sim card suspended, gsm voip gateway avoid sim card suspension, asterisk android app gsm, android gsm voip gateway, i need an android app i already have a design for it i just need it to be built gps service for taxi, I need an Android app. I already have a design for it, I just need it to be built. I want to build the app like https://play.goo, gsm voip gateway android app

О работодателе:
( 3 отзыв(-а, -ов) ) Lisboa, Portugal

ID проекта: #22229233

20 фрилансеров(-а) в среднем готовы выполнить эту работу за $791


Hi,. I have gone through the brief details mentioned on the job. I have done multiple jobs with Android, Asterisk PBX, Linux, Mobile App Development, VoIP which are the skills required to get this job done. Lets start Больше

$750 USD за 9 дней(-я)
(37 отзывов(-а))

Hi, Greetings of the day! I read your requirement for the App development! I am leading India based trusted mobile and web application development company having more than 10 years of experienced in creatin Больше

$809 USD за 40 дней(-я)
(46 отзывов(-а))

Hi, I'm a talented developer for iOS, Android and have 11.2 years full time development experience. I have already developed a great number of various applications, namely on-demand services, location-based apps, s Больше

$750 USD за 7 дней(-я)
(13 отзывов(-а))

Hi, I understood concept of GSM to VoIP calling Android app you want. I have expertise in Native Android app development. I agree to conditions you mentioned in Project detail. Q. Where will be Ubuntu server hos Больше

$3500 USD за 55 дней(-я)
(60 отзывов(-а))

Hello, i am expert in app development  I read your requirements an you need a application and i already done many project same as your requirement so please message me for more discuss We have already designed, develop Больше

$250 USD за 6 дней(-я)
(15 отзывов(-а))

Dear Client, How are you? As I'm a full stack Developer, I'm very familiar with Mobile App Development and Hosting & Deployment Server... I have expertise in App Design, API Integration with Server, MQTT, LOT system e Больше

$500 USD за 7 дней(-я)
(2 отзывов(-а))

Hi, Thank you for your job posting. This job is an ideal match for my skills and experience. My skills are following. - Java, Kotlin - Rest API, JSON - 3rd party library(RxJava, Retrofit) I have rich experience android Больше

$500 USD за 7 дней(-я)
(10 отзывов(-а))

Hi Domingos B. My name is Shadi Ghaith. I went through your project and will be happy to discuss as we have extended experience in mobile app development, android. I have been doing freelancing in Ireland since 2014 Больше

$750 USD за 7 дней(-я)
(1 отзыв)

Hi, We have a specialized team for Android App development. We would not only provide you a great design but will also optimize the code for ultimate performance and save resources of both users and server. In short o Больше

$1500 USD за 25 дней(-я)
(2 отзывов(-а))

Hello , I have seen your requirement and I will do this in less time. you need a mobile application so I am interested in your job because I already completed this type of job. so i want one more similar job so i can Больше

$255 USD за 5 дней(-я)
(6 отзывов(-а))

How are you. I am an Android, iPhone app and Web Site expert with full experience for 7+ years. I have deep knowledge with Android, Swift, Kotlin, java, javascript, Php, React js, node js, Codeigniter, Zend, MySQL, Ora Больше

$500 USD за 7 дней(-я)
(4 отзывов(-а))

Hi Thank you for your response. I just checked your project description, so it looks like a perfect fit on my skill sets. I have already developed a LinPhone App which based on LinPhone SDK. So your app based on GSM a Больше

$700 USD за 7 дней(-я)
(4 отзывов(-а))

Hi Hope you are doing well. I have reviewed your requirements and we can implement all of your requirements with high quality work. Please have a look at our company website. You will find our past works, ser Больше

$500 USD за 7 дней(-я)
(7 отзывов(-а))

Hi , I am experts in Android &IOS application development and I specialised in Open Source & SCM solutions, such as Git, Subversion, Mercurial and Atlassian's JIRA, Confluence and Stash and have worked in a Test-Drive Больше

$400 USD за 20 дней(-я)
(1 отзыв)

I am an informatic with more than 30 years of experience in Computer Security Professional, expert in ethical hacking, linux, blockchain, Telecommunications, Voip, networks, programming, server administration, asterisk Больше

$750 USD за 30 дней(-я)
(1 отзыв)

Hey Meredith here, I have gone through the description and it’s according to my expertise so I can complete your task easily. I can handle HTML/HTML5, CSS/CSS3/SASS, JavaScript/jQuery, and PHP with frameworks such as C Больше

$400 USD за 1 день
(0 отзывов(-а))

Nice to meet you I am an Amazon Cloud Architect for the web infrastructure serving 90 million page impressions and 12 TB Internet traffic per month. The AWS services I use are EC2, ELB, MySQL RDS, VPC, CloudFront, Elas Больше

$637 USD за 9 дней(-я)
(0 отзывов(-а))

Hello, I am new to the platform and I would like to get my first project. I have 5 years of experience in software. I would like to know more. contact me to chat thanks

$1111 USD за 7 дней(-я)
(0 отзывов(-а))

Dear sir. Here is my work. I have checked your project description and requirements carefully. I am a senior iOS/android developer has 4 years of good experience. I will never make you disappointed. If you give me a ch Больше

$500 USD за 7 дней(-я)
(0 отзывов(-а))

Dear Hiring Manager, After reviewing your job description, it’s clear that you’re looking for a candidate that is extremely familiar with the responsibilities associated with the role, and can perform them confidentl Больше

$750 USD за 7 дней(-я)
(2 отзывов(-а))