Handling Phone Numbers: Best Practices for Developers

Handling Phone Numbers When building real-time and telephony communication applications, you will inevitably need to store phone numbers. Whether it’s input you get from FreeSWITCH, Asterisk, or via an API like Tropo or Twilio, phone numbers can be tricky to handle, parse, verify, store, and display in your application. Why Are Phone Numbers So Hard? […]

You Have To Pay For It: The Importance of Vendor Relationships in APIs

For more than five years now, thousands of developers, and probably millions of users, have relied upon a free Google Text-To-Speech (TTS) service. This service has popped up in all kinds of places, from experimental demo apps to production telephone systems. However, Google has recently started requiring a human intervention (specifically, a CAPTCHA) before it […]

Speech Recognition on Asterisk: Getting Started

Having talked with several people at various AstriCons and local Asterisk meetups, I’ve heard that many people have not tried to set up speech engines to work with Asterisk. This is a quick tutorial for the way that we integrate Text-to-Speech and Speech Recognition engines with Asterisk. Start your Engines Before you dive into Asterisk, […]

Making Adhearsion Compatible with Asterisk 13

Asterisk version 12 introduced a number of changes both in its internals and the various control APIs. While these changes were important, they also were not backward compatible (and this is a good thing). Since Asterisk 13, the Long Term Support release, was made in October of last year, we’ve been looking at what it […]

Putting the Can in CanCan

Continuing work on our favorite Rails authorization library As many of you have read, I am announcing the CanCanCan project, a continuation of the popular Rails gem CanCan. This effort is a collaboration of the CanCan community continuing Ryan Bates’ excellent work to date. This article is intended to serve as the release announcement as […]