Android phone as GSM Gateway for VoIP

Closed Posted 4 years ago Paid on delivery
Closed Paid on delivery

We need an application that runs on Android phones (4.0 or above) and can receive calls through SIP and forward it to the GSM network. The application should then forward the audio and convert from SIP to GSM and vice versa.

Full description below. Please review and message me with considerations. If any requirements are unable to be met, please let me know before we make a deal.

General

Deliveries

The application working in APK format

Full source code

Simple manual for compiling and generating the application from source

A SIP client running on another phone that connects to the server via WIFI and able to demonstrate the functionality in this project.

Features

- Route call from SIP to GSM

- Convert audio from/to SIP and GSM networks

- Able to run on Android 4.0 and up.

Application Configurations

- No need root access

- Enable or disable the app

- Enable to receive calls only on wifi or all networks

- Enable to route calls from SIP to GSM

- Choose GSM module to use

- Must run on background

- Must be very lightweight to run on small memory devices

- Configure SIP Accounts.

Sip Requirements

- Register on Sip Server

- Receive call authenticated by IP, user/pass or no authentication.

- Make calls with or without authentication

- Forward DTMF digits using RFC2833 or inband

- Use codec G711 and GSM

- Be able to use codec G729

- Be able to store a CSV with all calls made

Android Asterisk PBX Java Mobile App Development VoIP

Project ID: #19339629

About the project

6 proposals Remote project Active 4 years ago

6 freelancers are bidding on average $1315 for this job

ayesha0124

Hi there, I have checked the details. I have rich experience with Android, Asterisk PBX, Java, Mobile App Development, VoIP. Please initiate the chat so we can discuss this job in detail.

$1250 USD in 14 days
(3 Reviews)
2.4
naishodayo

Hello, sir. I am a talent website&mobile developer. I have already completed a lots of projects like this. I just checked your description. I'm sure I can complete your project successfully. Please contact me so that w More

$1250 USD in 20 days
(1 Review)
2.4
shubhamsinha70

Let me introduce myself - - Overall 8+ years of experience in development. - 2+ years of experience in React. - 3+ years of experience in Node. - 3+ years of experience in Angular. - Good communicator, approx 1 More

$1388 USD in 15 days
(0 Reviews)
0.0
Vitspl

Hello, We are a platinum certified partner of 3CX in USA. It is an IP based PBX system which follows SIP protocols. We are also well versed on PJSIP, CHAN_SIP, CHAN_PJSIP protocols. We would like to have a tec More

$1500 USD in 20 days
(0 Reviews)
0.0