Asterisk Communication Solutions

Discover how you can create communications solutions based on open source Asterisk and backed by Digium products and services.

Get Started

Discover the Power of Asterisk

Build voice, video and text applications easily with Asterisk, the world's most widely-adopted open source communications software.

Asterisk is an open source framework for developing state-of-the-art communications solutions. Developers use Asterisk to create innovative, custom products because it makes it easy to build almost any communications application you can imagine. It includes hundreds of pre-built components that handle the complex, low-level details of voice, video, and text communications. Asterisk powers many applications, including automatic call distributors, conference bridges, voicemail, unified messaging, and more. Discover how Asterisk can power your next-generation communications deployment.

Create Custom Communications Solutions

The Asterisk open source communications engine powers voice and video solutions worldwide. It offers:

  • Freedom. Asterisk is freely available under the terms of the GNU GPLv2 license.
  • Flexibility. Asterisk seamlessly connects with VoIP and legacy communication systems.
  • Power. Asterisk helps developers quickly and easily create powerful communications solutions.
  • Focus. Asterisk handles the low-level details of real-time communications, allowing developers to concentrate on business logic.

Asterisk Logo - brown and orange

Call to ActionLearn the basics and best practices of open source Asterisk. Watch the Webinar

Who Makes Asterisk?

The original Asterisk code was written by Mark Spencer, the founder of Digium. It started out as the core of his office phone system, and now it powers millions of business phone systems around the world. Since its initial release, Asterisk has continued to be enhanced by a community of thousands of users and developers worldwide.

The Asterisk project is sponsored and maintained by Digium, the steward of the Asterisk code base and the owner of the Asterisk trademark. Since 1999, Digium has been developing award-winning products and services built for use with Asterisk and for supporting Asterisk-based systems. Many of Digium’s products are designed to fully integrate with open source Asterisk to enable quick deployments of custom phone system solutions. Purchases of Digium products and services go to help fund the Asterisk project and are an excellent way to give back to the community.

Asterisk Software

Download Asterisk software and find popular add-ons, such as codecs, echo cancellation, the Digium Phone Module for Asterisk (DPMA), and more.

Explore Asterisk Software

Asterisk Training

Learn to install, configure, tune, and maintain a complete Asterisk system through online and instructor-led courses. Register for dCAP testing and become a Digium Certified Asterisk Professional.

Browse Training

Asterisk Hardware & Services

Digium offers IP phones, standalone gateway appliances, and interface cards built exclusively for Asterisk as well as SIP trunking services in the US Lower 48 states.

Find Products

Asterisk Support

Get support for your Asterisk-based communications solution. You can choose from a range of support offerings to find the one that suits your needs.

Get Support

Asterisk Experts

Need help building an Asterisk-based application, solution or product? Digium can help.

Find an Expert