```ruby
# Get twilio-ruby from twilio.com/docs/ruby/install
require 'rubygems' # This line not needed for ruby > 1.8
require 'twilio-ruby'

# Get your Account Sid and Auth Token from twilio.com/user/account
account_sid = 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
auth_token = 'your_auth_token'
@client = Twilio::REST::Client.new account_sid, auth_token

call = @client.account.calls.create(url: 'http://demo.twilio.com/docs/voice.xml',
                                    to: '+14155551212',
                                    from: '  +15017250604',
                                    record: true)
puts call.to
```

Update registration URL in guides
user
```ruby
# Get twilio-ruby from twilio.com/docs/ruby/install
require 'rubygems' # This line not needed for ruby > 1.8
require 'twilio-ruby'

# Get your Account Sid and Auth Token from https://www.twilio.com/console
account_sid = 'ACXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX'
auth_token = 'your_auth_token'
@client = Twilio::REST::Client.new(account_sid, auth_token)

call = @client.account.calls.create(url: 'http://demo.twilio.com/docs/voice.xml',
                                    to: '+14155551212',
                                    from: '  +15017250604',
                                    record: true)
puts call.to
```
assistant