Setup Virtual Phone Number & IVR Extensions /w Twilio

This article shows you how to implement IVR extensions with your twilio phone number.

Step 1 – Register with phone number from twilio

If you haven’t done so already, go to and get a phone number.


Step 2 – Setup scripts and XML on server

Before you tell Twilio to handle your voice calls with the following scripts, you’ll need to create them.

a. XML file – Output to twilio is handled with xml. Your xml file will run as soon as a phone call is initiated. This xml for example has an intro message and asks the user to input a 1,2,3 or 4 and sends response from phone to our second file, a php file.

Please make sure that you input your intro message and specify at the end of xml, the full URL path of your php processing file. In this case it’s

<?xml version="1.0" encoding="UTF-8"?>
<Gather action="handle-user-input.php" numDigits="1">
<Say voice="woman">Welcome to COMPANY.</Say>
<Say voice="woman">In order to further assist you. Please listen to the following:</Say>
<Say voice="woman">For sales, please press 1.</Say>
<Say voice="woman">For technical support, please press 2.</Say>
<Say voice="woman">To speak with Bob, please press 3.</Say>
<Say voice="woman">For all other inquiries, please press 4.</Say>
<!-- If customer doesn't input anything, prompt and try again. -->
<Say voice="woman">Sorry, I didn't get your response.</Say>

b. PHP file – This file gets the input from xml (number dialed) and checks the day of the week and time. then it runs a few if statements and either redirects phone number and calls a phone or redirects via a twiml to a voicemail with special message recorded in mp3.




//ok time to call


header('Content-type: text/xml');
echo '<?xml version="1.0" encoding="UTF-8"?>';
echo '<Response>';
$user_pushed = (int) $_REQUEST['Digits'];
if ($user_pushed == 1)
echo '<Say voice="woman">Connecting you to, sales.</Say>';
if($ok!='1'){echo '<Redirect></Redirect>';}else{
echo '<Dial>+13105551212</Dial>';}

else if ($user_pushed == 2)
echo '<Say voice="woman">Connecting you to, technical support.</Say>';
if($ok!='1'){echo '<Redirect></Redirect>';}else{
echo '<Dial>+13105551212</Dial>';}
else if ($user_pushed == 3)
echo '<Say voice="woman">Connecting you to, Ori Tzvielli.</Say>';
if($ok!='1'){echo '<Redirect></Redirect>';}else{
echo '<Dial>+13105551212</Dial>';}
else if ($user_pushed == 4)
echo '<Say voice="woman">Connecting you to, operator.</Say>';
if($ok!='1'){echo '<Redirect></Redirect>';}else{
echo '<Dial>+13105551212</Dial>';}

else {
echo "<Say voice="woman">Sorry, You dialed an invalid number.</Say>";
echo '<Redirect></Redirect>';


echo '</Response>';

* reference –

Step 3 – Login to and reference script

Go to “numbers” page, and click on your phone number. Under the “Voice Request URL”, enter the full path on your server to the xml file and click on “save changes”.

Voice Request URL in Twilio

That’s It!.

Please feel free to view complete “how to” video or comment at bottom of this page with any suggestions or questions.

Video Transcription:

Would like to show you how to implement a virtual phone number via a twilio phone number, setup extensions and an automated system (IVR) and to setup some a timed programmatic addition to redirect phone number based on time of day and day of week. In order to implement this, we use a twilio phone number. Twilio enables you to rent a phone number and do simple programming to enhance phone number (voice and sms). In addition twilio is very affordable.

Let’s dive in and begin. We setup a phone number. the test is, anytime someone calls on a weekday during specific business hours, we want to enable them to go to specific extensions, (sales, technical support, etc), and if not within business hours or weekend, it will redirects to voicemail. Pretty soon, we’ll show you the programming.

Register with, get a number and login. Go to the “numbers” page and click on phone number. We want to tell twilio what to do when a voice call comes in via the field of “voice request url”. We can select all or inbound and outbound. Also you can set what script to run in case of a sms message. Right now, we’ll go over the voice option. We setup a file on our webserver. In order to actual ger more information, go to twilio docs ( you can download their zip file and read their examples and documentation to help you understand more. IVR allows you to create extensions. For example, an intro message and “for this, press 1, for this press 2” and the script will know how to handle it. Other than php, the examples may be in other languages as well. The docs explains what happens. when a customer dials a twilio number, it goes to twilio’s server and the server triggers the url we just specified. I’m going to dive into this pretty quickly. We’re now going to go to the ftp and create this file. Now’s we’re using our ftp client and editing our php script. In our voice request url, we told it to go to our xml file named
handle-incoming-call.xml. Let’s edit this file. It’s a simple structured xml file which says the following. Whenever you gather an input from the phone call, send it over to another file, our php file. Say in a woman’s voice “welcome to astral web”, then pause and say “in order to proceed”… “for sales press 1”, etc etc. The gather field will listen to the phone and will send info to the php file and if someone did not press a correct number the xml repeats the same menu and waits for correct dial/input. Now let’s edit the php file and look inside. Again the output of the file is in xml and the file listens to the input. If the user presses 1, it will run the first part, if the user presses 2 and on and on. If nothing was presses, it will say in a woman’s voice, sorry you dialed an invalid number and will redirect to the original xml.
the script will check if it’s during business hours and if so, it will redirect/dial to another phone number and if not, it will play the mp3 from twimlet which we earlier recorded for voicemail. Twimlet is twilio’s own language which enables us to add more coding at we did via the twiml is redirect to voicemail, send an email and play as the message on voicemail an mp3 that we recorded.
Instead of mp3, you can input regular text. for example, hi i am not in but remember that in the url, you cannot have spaces. Replace spaces with plus signs “+”. Above in the code, we set the time and date and then checked in if statements.That’s it! I wanted to give one more tip on xml. Make sure you always have double quotes and quotes are closing correctly and that your header is in xml. If you have a problem, you can diagnose via your dev tools and logs area. Don’t forget to test that everything works.

Phone Call Event Tracking with Google Analytics & Twilio Number

This article explains in a simple manner how to track phone calls and call duration with twilio phone numbers and input into google analytics (universal) for event tracking.

Step 1 – Make sure you have google universal analytics on your website

If you don’t, please install the latest tracking code or upgrade at

Google Analytics Universl Code

Step 2 – Register with twilio and get a phone number

Register and login to


Step 3 – Create script to input into google analytics

All you have to do is add the following code to a webpage on your server.
a. change ANALYTICSACCOUNTID to your account analytics account id (“UA-xxxx-xx”)


$datetime = date('m-d-Y--H:i:s');



Step 4 – Reference script in twilio

After you login to twilio, on main dashboard page, click on “numbers” page and click on your phone number. Under “voice” section, click on “optional voice settings” in order to open more options and add url of script we just created to “Status Callback URL” and click on “save changes”.

* see google guidelines at Google Analytics Universal – Measurement Protocol Developer Guide –

Status CallBack URL

Step 5 – Test in Analytics

Make a phone call and look at the real-time events section and test over time.

Look at analytics events

Hope you enjoyed this simple video. We love twilio and analytics, especially the bridge between offline and online.

Let us know if you have any questions. We’ll be happy to help!

Video Transcription:

Hey everybody. This is Ori from Astral Web. I’m very excited to create this video to show you how we bridge the gap between the offline and online world. in this video we’re going to track everytime someone calls our phone number, we’re going to put into google analytics the duration of the call. This is a very simple example so you can understand what’s going on and you can build upon that. Very cool thing – let’s dive into it very quickly. The first thing we want to do is buy a twilio number. Twilio is a really nice company and enbales you to add programmatic addons. Go to and register and we recommend them. After you register with twilio , login and click on phone number and go under the voice section under optional voice settings and status callback url. What that means is anytime a phone call is completed, at the end of the call it will trigger the url you specify. We will create this script in a second. The script will then take information from twilio and input it into google analytics. Very cool!

Let’s look at the file. eventtracking.php. Let’s go to our server via ftp client and edit eventtracking.php. All you have here are 3 or 4 lines. What i actually did was included the date and the time in order to track in analytics when the call was made and the GET field we receive from twilio. After you get the time and the date from the server plus you might want to adjust the time if your server time is different from you home or work computer. After that you will use the latest google analytics universal url (/collect/). If you don’t have analytics universal you will need to install on website. Let’s look at code and check if we have latest analytics universal code. You can also check in analytics in admin, tracking info and tracking code. It should say, this is the universal analytics code… It came out a few months back (as of 2013). Looking at the redirect header url, google analytics enables you to pass offline information via a collect url in a very simple manner. Now you have to insert different fields. TID is the account id starting with UA dash …. CID is just a userid and this case we don’t use it. Now we specify that we want to track an event. EC category is called contact. EA is the action is called call and the label is the date time and the value is the call duration. So anytime someone calls you at the end of the call, twilio will go to your specified url and the script will give analytics the call duration. And i’ll show you how it looks. In the events section in analytics, you’ll be able to see time of calls and durations. You can translate into minutes instead of seconds. To test, make a phone call and go to google analytics, real-time and look into events and make sure it works correctly.

If you’re running a pay per click campaign, you might want to have different phone numbers
for your landing pages or from SEO. Try to have a unique twilio number for your website, different from your regular store or other numbers for better tracking. Super simple code and works real well. If you have any questions, i’ll be happy to share and answer questions.