PHP Assisted Transfer With BXML

This project is provided as an example on how to how to implement a simple assisted transfer flow using Bandwidth XML (BXML). The following features are demonstrated:

Using BXML for inbound call handling
Using BXML to make an outbound call
Using BXML to manage separate call flows for different call legs
Using BXML to conference separate call legs together

Before you start, make sure that you have the following:

A working PHP development environment, including composer
A Bandwidth App Platform account (see here to sign up)
A Heroku account

First, get the code

Pull down the repo as follows:

$ git clone https://github.com/BandwidthExamples/php-assisted-transfer-with-BXML.git # or clone your own fork
$ cd php-assisted-transfer-with-BXML
$ composer update

Next, modify the code with your App Platform Account info

Update the credentials by editing the web/recording_handler.php file and replacing the token:secret with your own App Platform token and secret. Edit the web/assisted_transfer.php file and change the $to variable to the phone number you want to transfer the call to.

And deploy it

Using Heroku

Create an Heroku app:

$ heroku create

And deploy it:

$ git add .
$ git commit -m "initial deployment"
$ git push heroku master

This will show the name of your app as follows:

remote:        https://<app-name>.herokuapp.com/ deployed to Heroku

Using Docker

Make sure you have the Docker Engine running on a publicly available host.

# build your Docker image 
$ docker build -t bandwidthapp . 

# run your application
$ docker run -d -P bandwidthapp 

# check what port port 80 was exposed to (probably something in the 32-thousand range)
$ docker ps -l

Create an App Platform application to route inbound calls to your app

First you'll want to get a phone number. See [here] (http://ap.bandwidth.com/docs/how-to-guides/buying-new-phone-numbers/) for ways to buy a phone number.

Next, use the publicly available of your app to create an application in the App Platform dev console. See [here] (http://ap.bandwidth.com/docs/how-to-guides/configuring-apps-incoming-messages-calls/) for a detailed example of how to set up an application. Paste the url in the Call Url field and append the php file, assisted_transfer.php, to it. It will look something like https://hidden-oasis-7486.herokuapp.com/assisted_transfer.php or http://yourhost:32443/assisted_transfer.php.

VERY IMPORTANT - Make sure that the Callback HTTP method is set to GET. This tells the App Platform to retrieve XML from the url.

Now add a phone number to the app by clicking the Add Phone Number button and selecting your phone number.

Now just call the number and you'll see BXML in action.

nabinem/php-assisted-transfer-with-BXML