Monitoring Call Progress Events with Node.JS and Express


Call progress events are a really useful tool if you ever need to track the state of phone calls an app you built makes with the Twilio Voice API. Let’s say you are building a dashboard to manage the huge influx of calls that your heavy metal themed, over the phone radio app makes to listeners. By providing a status callback to your web app you can track… Read More

Warm Phone Call Transfers with Python, Flask and Twilio Voice

Warm Phone Call Transfers with Python, Flask and Twilio Voice

Have you ever had your call disconnect while you were on hold with customer service and waiting for a transfer from one department to another? You probably felt like this when the call dropped: A warm phone call transfer, where a caller is on the phone with an agent then the agent brings on another agent and introduces them to the customer, shouldn’t be so difficult…. Read More

Getting Started with Gradle and the Spark Framework

Spark and Gradle

One of the worst phrases I hear at student hackathons is “I can’t build a cool web app because I only know Java”. I see two solutions to this dilemma. We can either agree to hunker down and get started learning Ruby or Python or we can embrace existing knowledge and dissolve this misconception. Even a veteran might not associate Java with quickly spinning up a… Read More

Playing Jammin’ Tunes Over The Phone with the Twilio NodeJS Library in ES6


When handling phone calls with TwiML, you have many options for controlling the caller’s experience. You can <Say> something in a robot voice, <Dial> other numbers into the call and even <Record> the call. My personal favorite is the ability to play audio files over the phone using the <Play> TwiML verb. You can even create your own version of Dial-A-Song, a hotline run by the band They Might Be Giants that… Read More

How to Warm Transfer a Call with Java and Twilio Voice


Calling into customer support or similar support lines can lead to some not so great experiences. Often times I find myself being tossed back and forth between different agents with no context of who I am talking to and when I am being transferred. These kinds of calls feel a lot like this: A better way for agents to handle incoming callers is to use a… Read More

Building an automated assistant with .NET MVC6, Entity Framework and Twilio on a Mac

Building an automated assistant with .NET MVC6, Entity Framework and Twilio on a Mac

A few months back I showed you how I used Twilio to build my own personal assistant that would keep tabs with my Google Calendar and call into all my meetings for me. Ever since I started using it I have managed to not only keep up with all my conference calls but also spend more time remembering about the other things I can’t automate… yet. I… Read More

A Swift Adventure: Building BasicPhone with TwilioClient – Part 2


In the first post in this series we wrote a simple iOS app using Swift that made an outbound phone call using the Twilio Client SDK for iOS.  To do that we set up the basic server infrastructure we need in order to generate a capability token, created a TwiML application that told Twilio what experience to give the caller and used the Client SDK APIs to… Read More

Getting started with ASP.NET 5 and Visual Studio Code on a Mac

Mac Windows Linux

During Build 2015 Microsoft announced a bunch of new tools aimed at helping developers build cross platform applications. Amongst the announcements, they let us know that ASP.NET was now available and ready to run on Mac and Linux natively. Up until this point there has been a few different ways to get .NET applications running on Unix systems but none of them were truly native or supported… Read More

Making and Receiving Phone Calls with .Net MVC

I usually get people at hackathons asking me about how to get started with the Twilio .Net Helper Library. My default answer is to always point people to the excellent series of blog posts showing how to use the library written by my colleague Devin. The thing about hackathons though is that sometimes people just want to get on with things and finish an implementation as soon as they can. This can… Read More