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Fonoster: The open-source alternative to Twilio

Fonoster Inc is researching an innovative Programmable Telecommunications Stack that will allow businesses to connect telephony services with the Internet entirely through a cloud-based utility.

Fonoster community banner

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Warning

Exploring Fonoster: We encourage new users to initially explore Fonoster's features through our SaaS (Software as a Service) option. This platform is free to start and offers a comprehensive experience of what Fonoster can do.

Installation Advisory: Please note that the current installation process for Fonoster is complex. We are actively working to simplify this process. We recommend waiting for our upcoming v0.9.x release before attempting a direct installation. We are working to offer a more user-friendly installation experience.

Thank you for your interest in Fonoster. We are committed to enhancing your experience with every release.

Features

The most notable features of Fonoster 0.4 are:

  • Multitenancy
  • Easy deployment of PBX functionalities
  • Programmable Voice Applications
  • NodeJS SDK
  • Support for Amazon Simple Storage Service (S3)
  • Secure API endpoints with Let's Encrypt
  • Authentication with OAuth2
  • Authentication with JWT
  • Role-Based Access Control (RBAC)
  • Plugins-based Command-line Tool
  • Support for Google Speech APIs

Code Examples

A Voice Application is a server that takes control of the flow in a call. A Voice Application can use any combination of the following verbs:

  • Answer - Accepts an incoming call
  • Hangup - Closes the call
  • Play - Takes a URL or file and streams the sound back to the calling party
  • Say - Takes a text, synthesizes the text into audio, and streams back the result
  • Gather - Waits for DTMF or speech events and returns back the result
  • SGather - Returns a stream for future DTMF and speech results
  • Dial - Passes the call to an Agent or a Number at the PSTN
  • Record - It records the voice of the calling party and saves the audio on the Storage sub-system
  • Mute - It tells the channel to stop sending media, effectively muting the channel
  • Unmute - It tells the channel to allow media flow

Voice Application Example:

const { VoiceServer } = require("@fonoster/voice");

const serverConfig = {
  pathToFiles: `${process.cwd()}/sounds`,
};

new VoiceServer(serverConfig).listen(
  async (req, res) => {
    console.log(req);
    await res.answer();
    await res.play(`sound:${req.selfEndpoint}/sounds/hello-world.sln16`);
    await res.hangup();
  }
);

// your app will live at http://127.0.0.1:3000 
// and you can easily publish it to the Internet with:
// ngrok http 3000

Everything in Fonoster is an API first, and initiating a call is no exception. You can use the SDK to start a call with a few lines of code.

Example of originating a call with the SDK:

const Fonoster = require("@fonoster/sdk");
const callManager = new Fonoster.CallManager();

callManager.call({
 from: "9842753574",
 to: "17853178070",
 webhook: "https://5a2d2ea5d84d.ngrok.io/voiceapp"
})
 .then(console.log)
 .catch(console.error);

Getting Started

To get started with Fonoster, use the following resources:

Give a Star! ⭐

Please give it a star if you like this project or plan to use it. Thanks πŸ™

Bugs and Feedback

For bugs, questions, and discussions, please use the Github Issues

Contributing

For contributing, please see the following links:

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Pedro Sanders
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Richard HC
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Sponsors

We're glad to be supported by respected companies and individuals from several industries.

Find all our supporters here

Become a Github Sponsor

Authors

License

Copyright (C) 2024 by Fonoster Inc. MIT License (see LICENSE for details).