Voice

Getting started

Learn how to start building an engaging voice experience

Adding customizable voice capabilities has never been easier

Developer tools make it easy to start building with Twilio

Focus on your customers, not on building voice from the ground up

Twilio Voice gives you the tools needed to build bespoke voice experiences that meet and exceed ever-changing customer expectations. Using our enterprise-grade infrastructure, you can spend more time delivering memorable customer experiences and less time building those experiences from scratch.

And with our innovative APIs, SDKs, and developer resources, you’ll have all the support needed to start building a memorable voice application.

Voice API

Upgrade how you connect with customers

Start connecting to customers around the world

Make your first outbound call

In just minutes, you can take the first steps in building your ideal voice experience
Call queues

Set up queues to store incoming calls in order, and then connect them to available agents
Customize how you respond to calls

Respond to incoming calls using your ASP.NET web application
Embed calling capabilities anywhere

Add the ability to make inbound and outbound calls from your browser or applications

      

			// Download the helper library from https://www.twilio.com/docs/node/install
// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = require('twilio')(accountSid, authToken);

client.calls
      .create({
         url: 'https://example.com',
         to: '+15558675310',
         from: '+15017122661'
       })
      .then(call => console.log(call.sid));

		


      

			# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client


# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = os.environ['TWILIO_ACCOUNT_SID']
auth_token = os.environ['TWILIO_AUTH_TOKEN']
client = Client(account_sid, auth_token)

call = client.calls.create(
                        url='https://example.com',
                        to='+15558675310',
                        from_='+15017122661'
                    )

print(call.sid)

		


      

			// Install the C# / .NET helper library from twilio.com/docs/csharp/install

using System;
using Twilio;
using Twilio.Rest.Api.V2010.Account;


class Program
{
    static void Main(string[] args)
    {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        var call = CallResource.Create(
            url: new Uri("https://example.com"),
            to: new Twilio.Types.PhoneNumber("+15558675310"),
            from: new Twilio.Types.PhoneNumber("+15017122661")
        );

        Console.WriteLine(call.Sid);
    }
}

		


      

			// Install the Java helper library from twilio.com/docs/java/install

import com.twilio.Twilio;
import com.twilio.rest.api.v2010.account.Call;
import com.twilio.type.PhoneNumber;

import java.net.URI;

public class Example {
    // Find your Account SID and Auth Token at twilio.com/console
    // and set the environment variables. See http://twil.io/secure
    public static final String ACCOUNT_SID = System.getenv("TWILIO_ACCOUNT_SID");
    public static final String AUTH_TOKEN = System.getenv("TWILIO_AUTH_TOKEN");

    public static void main(String[] args) {
        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
        Call call = Call.creator(
                new com.twilio.type.PhoneNumber("+15558675310"),
                new com.twilio.type.PhoneNumber("+15017122661"),
                URI.create("https://example.com"))
            .create();

        System.out.println(call.getSid());
    }
}

		


      

			use Twilio\\Rest\\Client;

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
\$sid = getenv("TWILIO_ACCOUNT_SID");
\$token = getenv("TWILIO_AUTH_TOKEN");
\$twilio = new Client(\$sid, \$token);

\$call = \$twilio->calls
               ->create("+15558675310", // to
                        "+15017122661", // from
                        ["url" => "https://example.com"]
               );

print(\$call->sid);
		


      

			require 'rubygems'
require 'twilio-ruby'

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = ENV['TWILIO_ACCOUNT_SID']
auth_token = ENV['TWILIO_AUTH_TOKEN']
@client = Twilio::REST::Client.new(account_sid, auth_token)

call = @client.calls.create(
                       url: 'https://example.com',
                       to: '+15558675310',
                       from: '+15017122661'
                     )

puts call.sid
		


      

			# Install the twilio-cli from https://twil.io/cli

twilio api:core:calls:create \\
    --url https://example.com \\
    --to +15558675310 \\
    --from +15017122661
		


      

			curl -X POST "https://api.twilio.com/2010-04-01/Accounts/\$TWILIO_ACCOUNT_SID/Calls.json" \\
--data-urlencode "Url=https://example.com" \\
--data-urlencode "To=+15558675310" \\
--data-urlencode "From=+15017122661" \\
-u \$TWILIO_ACCOUNT_SID:\$TWILIO_AUTH_TOKEN

		

      
			// Download the helper library from https://www.twilio.com/docs/node/install
// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = require('twilio')(accountSid, authToken);

client.transcriptions('TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
      .fetch()
      .then(transcription => console.log(transcription.dateCreated));

			# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = os.environ['TWILIO_ACCOUNT_SID']
auth_token = os.environ['TWILIO_AUTH_TOKEN']
client = Client(account_sid, auth_token)

transcription = client.transcriptions('TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX') \\
                      .fetch()

print(transcription.date_created)

			// Install the C# / .NET helper library from twilio.com/docs/csharp/install

using System;
using Twilio;
using Twilio.Rest.Api.V2010.Account;

class Program
{
    static void Main(string[] args)
    {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        var transcription = TranscriptionResource.Fetch(
            pathSid: "TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
        );

        Console.WriteLine(transcription.DateCreated);
    }
}

			public class Example {
    // Find your Account SID and Auth Token at twilio.com/console
    // and set the environment variables. See http://twil.io/secure
    public static final String ACCOUNT_SID = System.getenv("TWILIO_ACCOUNT_SID");
    public static final String AUTH_TOKEN = System.getenv("TWILIO_AUTH_TOKEN");

    public static void main(String[] args) {
        Twilio.init(ACCOUNT_SID, AUTH_TOKEN);
        Transcription transcription =
            Transcription.fetcher("TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
            .fetch();

        System.out.println(transcription.getDateCreated());
    }
}

			<?php

// Update the path below to your autoload.php,
// see https://getcomposer.org/doc/01-basic-usage.md
require_once '/path/to/vendor/autoload.php';

use Twilio\\Rest\\Client;

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
\$sid = getenv("TWILIO_ACCOUNT_SID");
\$token = getenv("TWILIO_AUTH_TOKEN");
\$twilio = new Client(\$sid, \$token);

\$transcription = \$twilio->transcriptions("TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
                        ->fetch();

print(\$transcription->dateCreated->format());

			# Download the helper library from https://www.twilio.com/docs/ruby/install
require 'rubygems'
require 'twilio-ruby'

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = ENV['TWILIO_ACCOUNT_SID']
auth_token = ENV['TWILIO_AUTH_TOKEN']
@client = Twilio::REST::Client.new(account_sid, auth_token)

transcription = @client.transcriptions('TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
                       .fetch

puts transcription.date_created

			# Install the twilio-cli from https://twil.io/cli

twilio api:core:transcriptions:fetch \\
    --sid TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX
		
			curl -X GET "https://api.twilio.com/2010-04-01/Accounts/\$TWILIO_ACCOUNT_SID/Transcriptions/TRXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.json" \\
-u \$TWILIO_ACCOUNT_SID:\$TWILIO_AUTH_TOKEN

Control and modify calls with ease

Global conference calling

Create customizable conference calls for up to 250 people globally
Call recording

Securely record, store, and encrypt both inbound and outbound call
Voice Intelligence

Turn voice calls into actionable data insights with machine learning.

Build without worrying about your data’s security

Emergency calling

Enable emergency call routing to Public Safety Answering Points (PSAPs) in the US, Canada, and the UK
Masked calling

Protect you and your customers’ sensitive data with temporary phone number proxies
HIPAA and PCI

compliance: Twilio Voice is both HIPAA compliant and PCI DSS Level 1 compliant

      

			// Download the helper library from https://www.twilio.com/docs/node/install
// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
const accountSid = process.env.TWILIO_ACCOUNT_SID;
const authToken = process.env.TWILIO_AUTH_TOKEN;
const client = require('twilio')(accountSid, authToken);

client.calls('CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
      .payments
      .create({
         idempotencyKey: 'idempotency_key',
         statusCallback: 'https://example.com'
       })
      .then(payment => console.log(payment.sid));

		


      

			# Download the helper library from https://www.twilio.com/docs/python/install
import os
from twilio.rest import Client


# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = os.environ['TWILIO_ACCOUNT_SID']
auth_token = os.environ['TWILIO_AUTH_TOKEN']
client = Client(account_sid, auth_token)

payment = client.calls('CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX') \\
                .payments \\
                .create(
                     idempotency_key='idempotency_key',
                     status_callback='https://example.com'
                 )

print(payment.sid)
		


      

			using Twilio;
using Twilio.Rest.Api.V2010.Account.Call;


class Program
{
    static void Main(string[] args)
    {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        var payment = PaymentResource.Create(
            idempotencyKey: "idempotency_key",
            statusCallback: new Uri("https://example.com"),
            pathCallSid: "CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
        );

        Console.WriteLine(payment.Sid);
    }
}

		


      

			using Twilio;
using Twilio.Rest.Api.V2010.Account.Call;


class Program
{
    static void Main(string[] args)
    {
        // Find your Account SID and Auth Token at twilio.com/console
        // and set the environment variables. See http://twil.io/secure
        string accountSid = Environment.GetEnvironmentVariable("TWILIO_ACCOUNT_SID");
        string authToken = Environment.GetEnvironmentVariable("TWILIO_AUTH_TOKEN");

        TwilioClient.Init(accountSid, authToken);

        var payment = PaymentResource.Create(
            idempotencyKey: "idempotency_key",
            statusCallback: new Uri("https://example.com"),
            pathCallSid: "CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
        );

        Console.WriteLine(payment.Sid);
    }
}

		


      

			<?php

// Update the path below to your autoload.php,
// see https://getcomposer.org/doc/01-basic-usage.md
require_once '/path/to/vendor/autoload.php';

use Twilio\\Rest\\Client;

// Find your Account SID and Auth Token at twilio.com/console
// and set the environment variables. See http://twil.io/secure
\$sid = getenv("TWILIO_ACCOUNT_SID");
\$token = getenv("TWILIO_AUTH_TOKEN");
\$twilio = new Client(\$sid, \$token);

\$payment = \$twilio->calls("CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
                  ->payments
                  ->create("idempotency_key", "https://example.com");

print(\$payment->sid);
		


      

			require 'twilio-ruby'

# Find your Account SID and Auth Token at twilio.com/console
# and set the environment variables. See http://twil.io/secure
account_sid = ENV['TWILIO_ACCOUNT_SID']
auth_token = ENV['TWILIO_AUTH_TOKEN']
@client = Twilio::REST::Client.new(account_sid, auth_token)

payment = @client.calls('CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX')
                 .payments
                 .create(
                    idempotency_key: 'idempotency_key',
                    status_callback: 'https://example.com'
                  )

puts payment.sid

		


      

			# Install the twilio-cli from https://twil.io/cli

twilio api:core:calls:payments:create \\
    --call-sid CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX \\
    --idempotency-key idempotency_key \\
    --status-callback https://example.com
		


      

			curl -X POST "https://api.twilio.com/2010-04-01/Accounts/\$TWILIO_ACCOUNT_SID/Calls/CAXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX/Payments.json" \\
--data-urlencode "IdempotencyKey=idempotency_key" \\
--data-urlencode "StatusCallback=https://example.com" \\
-u \$TWILIO_ACCOUNT_SID:\$TWILIO_AUTH_TOKEN

		

Supporting products

Communication doesn’t begin and end with Voice

Video

Create scalable, high quality video applications that your customers will remember with the WebRTC-powered Video platform.

Messaging

Reach your customers on their preferred channel worldwide with messaging—whether it’s over SMS, WhatsApp, or chat.

Elastic SIP Trunking

Add PSTN connectivity and global scaling to your communications infrastructure with the most agile SIP trunking solution available.

Resources

Everything you’ll need to build engagement with Voice

Quickstart guides

Get set up in just minutes using one of our quickstart guides and start building in the language of your choice.

Conferencing

See how to both set up conference resources and initiate them using the REST API.

SIP Interfaces

Increase your business agility by upgrading your VoIP infrastructure with scalable cloud capabilities.

Global edge locations

Route calls through one of our nine global edge locations to provide the lowest latency possible to your customers.

Secure payments

Add agent-assisted payments to your voice experience with the guarantee that you stay secure with PCI compliance.

Outgoing caller ID

Use a verified phone number to set a caller ID when making calls with the REST API.

Call queues

Set up call queueing to store incoming calls in order, then easily connect the first in line to a salesperson or agent.

Pricing

Flexible pricing for a flexible Voice API

With Twilio Voice, you only pay for what you use with no commitments necessary. Pay-as-you-go, or, get discounts on a committed volume.

See Voice pricing Start for free