# Record Phone Calls in Ruby
> \[!WARNING]
>
> Twilio is launching a new Console. Some screenshots on this page may show the Legacy Console and therefore may no longer be accurate. We are working to update all screenshots to reflect the new Console experience. [Learn more about the new Console](https://www.twilio.com/blog/new-and-improved-console-now-in-general-availability).
In this guide we'll show you how to use [Programmable Voice](https://www.twilio.com/en-us/voice) to record phone calls with your Ruby web application. We'll learn to record both inbound calls and outbound calls.
You can tell Twilio to record part of a phone call or the entire thing. In both examples we'll use [Twilio's Ruby SDK](https://github.com/twilio/twilio-ruby).
## Set up your web application
When a phone number you have bought through Twilio receives an incoming call, Twilio will send an HTTP request to your web application asking for instructions on how to handle the call. Your server will respond with an XML document containing [TwiML](/docs/voice/twiml) that instructs Twilio on what to do with the call. Those instructions can direct Twilio to read out a message, play an MP3 file, make a recording and much more.
To start answering phone calls, you must:
* [Buy and configure a Twilio-powered phone number](https://www.twilio.com/console/phone-numbers/incoming) capable of making and receiving phone calls, and point it at your web application
* Write a web application to tell Twilio how to handle the incoming call using TwiML
* Make your web application accessible on the Internet so Twilio can make an HTTP request when you receive a call
> \[!WARNING]
>
> If you are sending **SMS messages** to the U.S. or Canada, before proceeding further, be aware of updated restrictions on the use of **Toll-Free numbers** for messaging, including TF numbers obtained by purchasing them. These restrictions do not apply to Voice or other uses outside of SMS messaging. See this [support article](https://help.twilio.com/hc/en-us/articles/20212966914075-Toll-Free-Verification-and-Developers-Navigating-the-New-Restrictions) for details.
## Buy and configure a phone number
In the [Twilio Console](/console), you can search for and buy phone numbers in countries around the world. Numbers that have the Voice capability can make and receive voice phone calls from just about anywhere on the planet.
Once you purchase a number, you'll need to configure that number to send a request to your web application. This callback mechanism is called a [webhook](https://en.wikipedia.org/wiki/Webhook). This can be done in the number's configuration page.
## What is a Webhook?
Webhooks are user-defined [HTTP](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol) callbacks. They are usually triggered by some event, such as receiving an SMS message or an incoming phone call. When that event occurs, Twilio makes an HTTP request (usually a [`POST` or a `GET`](https://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol#Request_methods)) to the URL configured for the webhook.
To handle a webhook, you only need to build a small web application that can accept the HTTP requests. Almost all server-side programming languages offer some framework for you to do this. Examples across languages include [ASP.NET MVC](https://www.asp.net/) for C#, [Servlets](https://en.wikipedia.org/wiki/Java_servlet) and [Spark](https://github.com/perwendel/spark) for Java, [Express](https://expressjs.com/) for Node.js, [Django](https://www.djangoproject.com/) and [Flask](http://flask.pocoo.org/) for Python, and [Rails](https://rubyonrails.org/) and [Sinatra](http://www.sinatrarb.com/) for Ruby. [PHP](https://secure.php.net/) has its own web app framework built in, although frameworks like [Laravel](https://laravel.com/), [Symfony](https://symfony.com/) and [Yii](https://www.yiiframework.com/) are also popular.
Whichever framework and language you choose, webhooks function the same for every Twilio application. They will make an HTTP request to a URI that you provide to Twilio. Your application performs whatever logic you feel necessary - read/write from a database, integrate with another API or perform some computation - then replies to Twilio with a TwiML response with the instructions you want Twilio to perform.
### What is TwiML?
[TwiML](/docs/voice/twiml) is the Twilio Markup Language, which is just to say that it's an [XML](https://en.wikipedia.org/wiki/XML) document with special tags defined by Twilio to help you build your SMS and voice applications. TwiML is easier shown than explained. Here's some TwiML you might use to respond to an incoming phone call:
```xml
Thanks for calling!
```
And here's some TwiML you might use to respond to an incoming SMS message:
```xml
We got your message, thank you!
```
Every TwiML document will have the root **\** element and within that can contain one or more **verbs**. Verbs are actions you'd like Twilio to take, such as [\](/docs/voice/twiml/say) a greeting to a caller, or send an SMS [\](/docs/messaging/twiml/message) in reply to an incoming message. For a full reference on everything you can do with TwiML, refer to our [TwiML API Reference](/docs/voice/twiml).
## Record an inbound call
Now comes the fun part - writing code that will handle an incoming HTTP request from Twilio!
In this example we'll use [the Sinatra web framework](http://www.sinatrarb.com) to respond to Twilio's request and we'll use TwiML to tell Twilio how to handle the call.
Record part of an incoming call
```rb
# Get twilio-ruby from twilio.com/docs/ruby/install
require 'sinatra'
require 'twilio-ruby'
post '/record' do
Twilio::TwiML::VoiceResponse.new do |r|
# Use to give the caller some instructions
r.say(message: 'Hello. Please leave a message after the beep.')
# Use to record the caller's message
r.record
# End the call with
r.hangup
end.to_s
end
```
## Record an outbound call
Next, let's record an outbound call. First, we'll need to retrieve the credentials for our Twilio account.
### Retrieve your Twilio account credentials
First, you'll need to get your Twilio account credentials. They consist of your AccountSid and your Auth Token. [They can be found on the home page of the console](https://www.twilio.com/console).
### Make and record an outbound call
Just pass an extra "record" argument to "client.account.calls.create()" and Twilio will record the entire phone call.
Record an outbound call
```ruby
# Download the helper library from https://www.twilio.com/docs/ruby/install
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
.api
.v2010
.calls
.create(
record: true,
url: 'http://demo.twilio.com/docs/voice.xml',
to: '+14155551212',
from: '+15017122661'
)
puts call.sid
```
```json
{
"account_sid": "ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX",
"answered_by": null,
"api_version": "2010-04-01",
"caller_name": null,
"date_created": "Tue, 31 Aug 2010 20:36:28 +0000",
"date_updated": "Tue, 31 Aug 2010 20:36:44 +0000",
"direction": "inbound",
"duration": "15",
"end_time": "Tue, 31 Aug 2010 20:36:44 +0000",
"forwarded_from": "+141586753093",
"from": "+15017122661",
"from_formatted": "(415) 867-5308",
"group_sid": null,
"parent_call_sid": null,
"phone_number_sid": "PNaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"price": "-0.03000",
"price_unit": "USD",
"sid": "CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"start_time": "Tue, 31 Aug 2010 20:36:29 +0000",
"status": "completed",
"subresource_uris": {
"notifications": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Notifications.json",
"recordings": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Recordings.json",
"payments": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Payments.json",
"events": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Events.json",
"siprec": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Siprec.json",
"streams": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Streams.json",
"transcriptions": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Transcriptions.json",
"twiml_sessions": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/TwimlSessions.json",
"user_defined_message_subscriptions": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/UserDefinedMessageSubscriptions.json",
"user_defined_messages": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/UserDefinedMessages.json"
},
"to": "+14155551212",
"to_formatted": "(415) 867-5309",
"trunk_sid": null,
"uri": "/2010-04-01/Accounts/ACaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa/Calls/CAaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.json",
"queue_time": "1000"
}
```
Once the call is complete, you can listen to your recordings [in your Twilio Console](https://www.twilio.com/console/voice/logs/recordings) or access them directly through Twilio's REST API.
You can also gain access to the recording as soon as the call is complete by including a "StatusCallbackUrl" with your "client.account.calls.create()" command. At the end of the call Twilio will send a request to the URL you specified, and that request will include a link to the recording's audio file.
Learn more about the [`RecordingStatusCallback`](/docs/voice/api/call-resource#recordingstatuscallback) parameter.
## What's next?
* [Gather User Input via Keypad (DTMF Tones) in Ruby](/docs/voice/tutorials/how-to-gather-user-input-via-keypad/ruby)
* [Send SMS and MMS Messages](/docs/messaging/tutorials/how-to-send-sms-messages)
* [Track the Message Status of Outbound Messages](/docs/messaging/guides/track-outbound-message-status)