Flexisip
Communication - SIP
About this project
Flexisip is a comprehensive, modular and scalable SIP server suite written in C++17. It offers a wide range of functionalities, including:
- Proxy Server: acts as a central hub for routing SIP messages.
- Push Notification Service: delivers SIP notifications (in-calls, messages) to mobile devices even when the app is not actively running.
- Presence Server: enables users to see the online status of others and their availability for calls.
- Conference Server: enables group voice and video calls.
- Back-to-Back User Agent (B2BUA) Server: enables caller identity translation, media-level transcoding and SIP trunking.
- RegEvent Server: notify tier domains of user registration.
Deployment and Applications:
- Server-based VoIP Service: Flexisip can be deployed on server machines to run a full-fledged SIP VoIP service. This is exemplified by the free linphone.org service, which has been powered by Flexisip since 2011. Users can create SIP accounts on this service to connect with each other.
- Embedded Solutions: Flexisip can also be embedded and run seamlessly on smaller hardware systems, making it suitable for various embedded applications.
License
Copyright © Belledonne Communications
Flexisip is dual licensed, and can be licensed and distributed:
- under a GNU Affero GPLv3 license for free (see COPYING file for details)
- under a proprietary license, for closed source projects. Contact Belledonne Communications for any question about costs and services.
Documentation
Dependencies
| Dependency | Description | Mandatory | Enabled by default |
|---|---|---|---|
| OpenSSL | TLS stack. | X | |
| LibNgHttp2 | HTTP2 stack. | X | |
| libsrtp2 | Secure RTP (SRTP) and UST Reference Implementations | X | |
| SQLite3 | Library for handling SQlite3 file | X | |
| libmysql- |
Technologies & License
AGPL-3.0
C
Docker