Asterisk is an open-source framework for building communication applications, such as IP PBX systems, VoIP gateways, and conference servers. Developed by Digium, now part of Sangoma Technologies, Asterisk enables developers and businesses to create powerful telephony solutions tailored to their needs.

Features of Asterisk:

• Comprehensive telephony capabilities, including voicemail, call recording, IVR (Interactive Voice Response), and call routing.
• Supports a wide range of communication protocols, such as SIP, IAX, and H.323, ensuring compatibility with various telephony equipment and platforms.
• Extensibility through APIs and modules, allowing developers to customize and enhance functionalities to suit specific use cases.
• Scalability for small businesses, large enterprises, and carrier-grade deployments.
• Interoperability with traditional PSTN networks and modern VoIP systems, bridging the gap between legacy and next-generation telephony.
• A strong community and commercial support options for users seeking assistance or additional features.

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Disclaimer: Asterisk® is an open-source project maintained by Sangoma Technologies and distributed under the GNU General Public License (GPL). It is not affiliated with, endorsed by, or sponsored by any other entity. Asterisk is provided "as is," without any warranty, express or implied. Users are responsible for understanding and complying with licensing terms and regulations while using Asterisk.