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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

Deliverable

- 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)

Milestones:

- 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

技能: 安卓, 移动应用开发, VoIP, Linux, Asterisk PBX

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关于此雇主:
( 3个评论 ) Lisboa, Portugal

项目ID: #22229233

21 威客就此工作平均出价 $789

AwaisChaudhry

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 更多

$750 USD 在9天内
(37条评论)
7.4
kodecubeinfosys

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 更多

$809 USD 在40天内
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seekdeveloper

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 更多

$750 USD 在7天内
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7.3
SwapnilChouhan

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 更多

$3500 USD 在55天内
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5.8
jitendrasatpuda

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 更多

$250 USD 在6天内
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Zaytoona

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YunfengDev

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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 更多

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mobiappsoftware

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nt1225

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 更多

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mozammalidbctg

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tianyongmei29

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