Software base VoiP call termination from Mobile phone and connected to server with interface

We are looking for solution like a traditional GSM or CDMA VoiP gateway. This project will be separated in two parts. One is mobile application and another one is registration server.

The Mobile application will register to a server and accept call from that server with IXA or SIP protocol. After that call will terminate to a GSM network. (this part just like a traditional GMS getaway) This mobile application will work on wifi Internet connectivity and mobile Data internet ,

All call will pass with G729 codec

The registration server may be Asterisk or VOIP switch or any other server or customize server. This server will receive call from another VOIP switch server with SIP protocol.

Certain number of registered Mobile will be able to assign in a group of gateway. On server have to include option to show balance through USSD

all cell phones will act as a port like any normal voip gateway .

the application should be connected to interface to manage all ports .

security should be high on the server .

the project should accept any number of new cellphones added to interface .

also any new cell phone should be given a security key to allow it to be added in my server .

Skills: App Designer, Mobile App Development, Software Architecture, Software Development, VoIP

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About the Employer:
( 1 review ) Ipswich, United Kingdom

Project ID: #15402711

24 freelancers are bidding on average £3866 for this job


-----------------Hello----------------- ***Let's built the successful project together*** This is my profile and please check my profile .. As you s More

£2500 GBP in 30 days
(97 Reviews)

Dear I am very interested in your project I am a skillful and talented Android/iOS developer. I have proficient Java/Objective C/Swift skills and more than 5 years experience. Relevant Skills and Experience Android, More

£2500 GBP in 30 days
(84 Reviews)

Dear sir. Nice to meet you. I have read your job post in carefully and understood everything what you want. I have developed 30+ apps & published them app stores in successfully for 6+ years. As you have seen, More

£2500 GBP in 30 days
(58 Reviews)

Hello. I am an experienced web and mobile developer on this site. I have a great profile by completing over 100+ mobile apps and site tasks and got the great skills and experiences so far. Relevant Skills and Experien More

£2000 GBP in 30 days
(95 Reviews)
£2500 GBP in 30 days
(45 Reviews)

How are you ? Nice to meet you. My name is Bryan. Please check my profile. I have a great experience for 6+ years in software development. I am honest developer More

£9000 GBP in 30 days
(39 Reviews)

voip app for ios and android Relevant Skills and Experience swift,java, voip Proposed Milestones £2500 GBP - 1

£2500 GBP in 30 days
(31 Reviews)
£2500 GBP in 30 days
(25 Reviews)

Dear sir I have carefully checked your project description, So I am very interested in your project I already completed many projects in this business. So I have rich experience in this part. I will provi More

£2500 GBP in 35 days
(35 Reviews)

Hi, It looks like that you want to get an App built along with Server registration which will work like a traditional GMS [login to view URL] so? I am pretty much sure I can help you. Relevant Skills and Experience Please ini More

£4300 GBP in 30 days
(12 Reviews)

My name is LiMing. I am coding for over 10 years and have many experiences in this field. I read your description carefully and have some questions related to project development. Please contact to me and let's disc More

£2500 GBP in 30 days
(27 Reviews)

We read your requirement about GSM or CDMA and we want you to know that we have a good past experience in PHP,wordprss,laravel ,angular.js, javascript, Bootstrap, SEO, .net, html and css . Relevant Skills and Experi More

£1666 GBP in 20 days
(7 Reviews)

Hi Mark here, this sounds like a​n​ interesting project​ and​ I hope we can make some time to discuss this​. Relevant Skills and Experience We currently work on Apps and Development for the likes of Manchester, Birmin More

£2500 GBP in 30 days
(3 Reviews)

Hi! My name is Igor, I have strong experience with Android for 3+ years, I can do it for you Can we discuss details? Relevant Skills and Experience Android Proposed Milestones £1666 GBP - Final payment

£1666 GBP in 30 days
(9 Reviews)

i can set up the server part with only 800 pound i am expert with asterisk, i can use server with gsm module , this work well on asterisk, and we can discuss any option Expérience et Compétences appropriées asterisk More

£1500 GBP in 15 days
(16 Reviews)

Hi. Let's have an interview to discuss the project. Our website: [login to view URL], video: [login to view URL], Yelp: [login to view URL], Upwork: [login to view URL] Thank you. Stay tuned, I'm still wo More

£2500 GBP in 30 days
(7 Reviews)

Hi, hiring manager. I read your job posting very carefully. Over the last 9+ years, I have worked in all kinds of Mobile projects and I am able to build a mobile app from scratch very fast and with great efficiency More

£2777 GBP in 30 days
(5 Reviews)

We are CRM, ERP, POS, Custom Software solution providing company. We also deal with Portal, Blog, Social Media, e-commerce solution, Linux Migration and Open Source Development. Relevant Skills and Experience CMS: Wor More

£2100 GBP in 30 days
(9 Reviews)

Hi, I’m a Web Designer/Developer from the UK. My name is Mike. Your project description sounds interesting to me and I do have skills & experience that are required to complete this project. Relevant Skills and Experi More

£2500 GBP in 30 days
(2 Reviews)
£1500 GBP in 30 days
(5 Reviews)