Ready to Get Started with Asterisk? Asterisk is a free and open source framework for building communications applications and is sponsored by Sangoma.
Asterisk is a free and open-source framework for building communications applications. It is used by small businesses, large businesses, call centers, carriers, and governments worldwide. Asterisk powers IP PBX systems, VoIP gateways, conference servers, and other custom solutions. It is highly flexible and can be integrated with a wide range of telephony hardware and software.
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Supports Voice over Internet Protocol, allowing voice communications to be transmitted over the internet.
Functions as a Private Branch Exchange, enabling internal and external telephone communication within an organization.
Allows multiple parties to participate in a single call, facilitating conference calls.
Enables the recording of calls for quality assurance, training, or legal compliance.
Automates interactions with telephone callers, providing information and routing calls without human intervention.
Manages incoming calls by placing them in a queue and distributing them to available agents.
Provides voicemail services, allowing callers to leave messages when the recipient is unavailable.
Redirects incoming calls to another number, ensuring calls are not missed.
Displays the caller's information to the recipient before the call is answered.
Highly customizable to fit the specific needs of any business or application.
Released under the GNU General Public License (GPL), making it free to use, modify, and distribute.
Has a large and active community of users and developers contributing to its development and support.
Comprehensive documentation is available, including user guides, developer guides, and API references.
Can be integrated with a wide range of telephony hardware and software, including SIP phones, VoIP gateways, and CRM systems.
Offers various security features, including encryption and authentication, to protect communications.
Scalable from small deployments to large, enterprise-level systems.
Commercial support and consulting services are available from Digium and other third-party providers.
Security headers report is a very important part of user data protection. Learn more about http headers for asterisk.org