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.

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
• Secrets managed by Hashicorp Vault

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);

To get started with Fonoster, use the following resources:

• Deploying Fonoster with Docker
• Getting started with Fonoster
• Connecting Fonoster with Dialogflow
• Using Google Speech APIs
• How we created an open-source alternative to Twilio and why it matters

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

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

For contributing, please see the following links:

• Contribution Documents
• Contributors

Pedro Sanders	Efrain Peralta	Wardner Lara	Richard HC	Hoan Luu Huu	Speedy Monster
Brayan Munoz V.	Dede kurniawan	gabriel duncan	Prasurjya Pran Borah	Hector Ventura	Dipanshu Rawat
0xflotus	Osama Sehgol	Paul Sütterlin	Riad Vargas	Shailendra Paliwal	The Gitter Badger
Tom Sebastian	Yuri	cdrsociate	pavan	nrjchnd	Salami Bashir
Shivam Deepak Chaudhary	showf68	telenautical	Wisdom Elendu	Manish	Judge Godwins
Jon Chin	Harish Chander	Gary Barnes	Fidal Mathew	Dung Duc Huynh (Kaka)	Ciprian
Christopher Adigun	Bruno Gomes	Bruno Arueira	Antonius Ostermann	Ali Firat ARI	Alex
Albert E. Hidalgo Taveras

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

Find all our supporters here

Become a Github Sponsor

• Pedro Sanders

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