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Sinch Voice SDK for Node.js

This package contains the Sinch Voice SDK for Node.js for use with Sinch APIs. To use it, you will need a Sinch account. Please sign up or log in if you already have one.

Installation

We recommend to use this SDK as part of the @sinch/sdk-core package in order to make the most out of all the Sinch products.

However, it's still possible to use this SDK standalone is you need to access the Voice API only.

With NPM

npm install @sinch/voice

With Yarn

yarn add @sinch/voice

Usage

Credentials

The Voice API uses the Application Signed Request to authenticate against the server. You will need to provide the following credentials:

  • applicationKey: one of the application keys that can be found in Apps section of the Voice dashboard
  • applicationSecret: the corresponding secret that can be found at the same place

As part of the Sinch SDK

If you are using this SDK as part of the Sinch SDK (@sinch/sdk-core) you can access it as the voice property of the client that you would have instantiated.

import {
  SinchClient,
  ApplicationCredentials, 
  VoiceService,
  Voice,
} from '@sinch/sdk-core';

const credentials: ApplicationCredentials = {
  applicationKey: 'APPLICATION_ID',
  applicationSecret: 'APPLICATION_SECRET',
};

// Access the 'voice' service registered on the Sinch Client
const sinch = new SinchClient(credentials);
const voiceService: VoiceService = sinch.voice;

// Build the request data
const requestData: Voice.TtsCalloutRequestData = {
  ttsCalloutRequestBody: {
    method: 'ttsCallout',
    ttsCallout: {
      destination: {
        type: 'number',
        endpoint: '+14045005000',
      },
      cli: '+14045001000',
      locale: 'en-US',
      text: 'Hello, this is a call from Sinch.',
    },
  },
};

// Use the 'voice' service registered on the Sinch client
const calloutResponse: Voice.GetCalloutResponseObj
  = await voiceService.callouts.tts(requestData);

Standalone

The SDK can be used standalone if you need to use only the Voice APIs.

import {
  ApplicationCredentials
 } from '@sinch/sdk-client';
import {
  Voice,
  VoiceService,
} from '@sinch/voice';

const credentials: ApplicationCredentials = {
  applicationKey: 'APPLICATION_ID',
  applicationSecret: 'APPLICATION_SECRET',
};

// Declare the 'voice' service in a standalone way
const voiceService = new VoiceService(credentials);

// Build the request data
const requestData: Voice.TtsCalloutRequestData = {
  ttsCalloutRequestBody: {
    method: 'ttsCallout',
    ttsCallout: {
      destination: {
        type: 'number',
        endpoint: '+14045005000',
      },
      cli: '+14045001000',
      locale: 'en-US',
      text: 'Hello, this is a call from Sinch.',
    },
  },
};

// Use the standalone declaration of the 'voice' service
const calloutResponse: Voice.GetCalloutResponseObj
  = await voiceService.callouts.tts(requestData);

Promises

All the methods that interact with the Sinch APIs use Promises. You can use await in an async method to wait for the response, or you can resolve them yourself with then() / catch().

// Method 1: Wait for the Promise to complete (you need to be in an 'async' method)
let calloutResponse: Voice.GetCalloutResponseObj;
try {
  calloutResponse = await voiceService.callouts.tts(requestData);
  console.log(`callId = ${calloutResponse.callId}`);
} catch (error: any) {
  console.error(`ERROR ${error.statusCode}: Impossible to make a TTS callout to the number ${requestData.ttsCalloutRequestBody.ttsCallout.destination.endpoint}`);
}

// Method 2: Resolve the promise
voiceService.callouts.tts(requestData)
  .then(response => console.log(`callId = ${response.callId}`))
  .catch(error => console.error(`ERROR ${error.statusCode}: Impossible to make a TTS call out to the number ${requestData.ttsCalloutRequestBody.ttsCallout.destination.endpoint}`));

Contact

Developer Experience team: [email protected]