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Linphone and its components are drivers of innovation in many sectors such as
telecommunications, IoT, health, home automation, security etc.
Linphone’s cross-platform VoIP SDK and Flexisip server are used worldwide in our customers’ hardware and software applications.
Telco operators, Mobile Virtual Network Operators (MVNOs) and Over The Top (OTT) service providers can customise Linphone to create their own branded and value-added VoIP application. From the very beginning, the Linphone team has invested much of its R&D effort into audio and video quality across heterogeneous networks.
Linphone and the Flexisip conference server offer advanced group features, such as server-based group calling and video meetings, group chat and presence. We aim to provide a complete, robust and unified-over-SIP solution for the next generation of networking applications.
Linphone is used by major actors in the security domain. It has proven to be a legitimate candidate, as it supports SIP/TLS with state-of-the-art ciphering algorithms, ZRTP audio/video encryption, and end-to-end encryption for messaging. It is the first open source softphone to offer post quantum encryption, with the implementation of Crystals-KYBER algorithm.
Organisations in the health sector can use Linphone to build telepresence solutions for long-distance medical consultations, telephony systems for elderly and disabled people, or monitoring systems for hospitals.
Linphone is capable of interaction with web browsers, and is able to receive information from a web page to start a call, open the app, invite participants to a conference call etc. It is therefore a good candidate for building advanced solutions for professional communications.
Linphone and Flexisip are integrated into IP video door entry intercom systems, allowing the audio and video capabilities of a door entry panel to be accessible by in-house control screens and smartphones, connected either to a local network or to the public internet. The network architecture used in these contexts can also be deployed in other areas, such as the emergency services or the Internet of Things.
Digital communications including voice, video and messaging involve sensitive user data that need to be protected against unauthorised access. Linphone and Flexisip provide built-in security features that allow the creation of a secure communication service across the public internet. This document describes the key technologies incorporated into a Linphone/Flexisip SIP network.
Digital video door entry intercom systems combined with smartphones can leverage regular SIP VoIP technology to offer a new set of services to end-users: get a notification when visitors press the door bell, see them on video, interact with them via voice and video, at home or anywhere else via wifi or 3G coverage. This document describes how Linphone and Flexisip can be used together to build a SIP network dedicated to home automation and surveillance.
The Linphone project is an open source solution that was first released in 2001. It started as a personal project done on spare time and it is now a sustainable company employing 20 people (15 of them being software developers). We believe that employing open source software developers is the best way to pay them for their contribution to the open source ecosystem.
Linphone is likely to be the first open source SIP-based conferencing solution powered by a modern SFU server.
The Linphone application is most likely the first open source communication software in the world to have implemented the NIST finalist algorithm in the encryption key category, CRYSTALS-Kyber, as of today.
A discussion on how Linphone implements SIP RFCs to achieve text-based group communications.
This video explains how to leverage SIP and RTP open standards to bring voice and video capabilities to IP hardware intercom solutions.
See the presentation of LIME, our open source software library for end-to-end encrypted Instant Messaging, based on SIP and RCS standards. It focuses on Protocols' extensions, implementation challenges and future extensions.
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