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LINPHONE

An open source SIP phone for voice/video calls and instant messaging (mobile and
desktop)


LIBLINPHONE

A high-level VoIP library implementing all SIP calling and IM features within a
single API


FLEXISIP

A SIP server implementation with proxy, presence and conference modules


FLEXISIP ACCOUNT MANAGER

A web API, provisioning server and admin platform for the creation and
management of user accounts


LIME

End-to-end encryption module for instant messaging, implementing the Signal
Protocol


POST QUANTUM ENCRYPTION

A Linphone extension providing Post Quantum Cryptography (using the
Crystals-KYBER algorithm)


MEDIASTREAMER2 & ORTP

A powerful voice/video streaming engine for telephony apps & a C library
implementing RTT Protocol


VOIP TUNNEL

A VoIP anti-blocking solution to overcome VoIP blocking and firewall
restrictions


BCG729

A fully portable C99 implementation of both an encoder and decoder for the G.729
A/B codec

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MAIN MENU

 * Products
 * Solutions
 * Licensing & services
 * Technical corner
 * About us
 * News

Newsletter



MENU TECHNICAL CORNER


LINPHONE

An open source SIP phone for voice/video calls and instant messaging (mobile and
desktop)


LIBLINPHONE

A high-level VoIP library implementing all SIP calling and IM features within a
single API


FLEXISIP

A SIP server implementation with proxy, presence and conference modules


FLEXISIP ACCOUNT MANAGER

A web API, provisioning server and admin platform for the creation and
management of user accounts


LIME

End-to-end encryption module for instant messaging, implementing the Signal
Protocol


POST QUANTUM ENCRYPTION

A Linphone extension providing Post Quantum Cryptography (using the
Crystals-KYBER algorithm)


MEDIASTREAMER2 & ORTP

A powerful voice/video streaming engine for telephony apps & a C library
implementing RTT Protocol


VOIP TUNNEL

A VoIP anti-blocking solution to overcome VoIP blocking and firewall
restrictions


BCG729

A fully portable C99 implementation of both an encoder and decoder for the G.729
A/B codec


MENU SOLUTIONS


SECURE COMMUNICATIONS

Leverage our long-term expertise on secure user authentication and end-to-end
encryption.


ALL USE CASES

Linphone and its components are divers of innovation in many sectors. Read our
white papers.


MAIN MENU

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 * Solutions
 * Licensing & services
 * Technical corner
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 * News


FOR SMARTPHONES, TABLETS AND DESKTOP PLATFORMS

- HD audio and video calling
- Audio/video meetings and group calling
- Secure communications with post quantum end-to-end encryption
- Instant messaging (IM), group chat and file sharing
- Interconnection with Apple's and Google's push notification systems
- Account creation and remote configuration (via QR code or URL)
- Fully SIP-based, for all calling, presence and IM features

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whole software family that we develop and distribute.

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SOLUTIONS

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own, specific VoIP project? Read common use cases and consult our white papers.

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project? Learn about our licensing model and our available range of professional
services.

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guidelines are held in Linphone’s technical public wiki.

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source code and more.

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FEATURES

Linphone is an open source SIP phone that makes it possible to communicate
freely with people over the internet. Find out what it can do.

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all the available features, you can look for answers in our Frequently Asked
Questions.

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FREE SIP SERVICE

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start using Linphone and connect with your friends.

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Choose Liblinphone, the easiest way to bring advanced VoIP & IM features to
software applications or hardware products

 * Cross-platform
   
   A single SDK with abstraction of platform specificities, to develop your VoIP
   client for smartphones, tablets, desktop platforms and embedded systems

 * Multi-language
   
   Liblinphone offers APIs for various programming languages: C#, Java/Kotlin,
   Swift, C++ and C.

 * Easy-to-get
   
   Seamless integration with mobile platform IDEs thanks to our Maven repository
   and Cocoapods. SDK packages are available and source code is publicly shared.

 * Easy-to-use
   
   Thanks to our tutorials, public Wiki, and development assistance service.

 

READ MORE

Build your secure communications app with Linphone

 

 * Secure user authentication
   
   and call setup, with SHA-256 digest authentication or TLS client certificates

 * Secure voice & video calls
   
   based on ZRTP or SRTP-DTLS end-to-end encryption protocols, using AES 128-bit
   or 256-bit key length and safe Elliptic Curves Diffie-Hellman (ECDH) X25519
   and X448

 * Secure im and group chat (mobile only)
   
   with Linphone Instant Messaging Encryption (LIME), using modern ciphering
   curve X448 and double ratchet algorithm for perfect forward secrecy

 

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WELCOME TO LINPHONE


LATEST NEWS


WE WILL BE AT OPENEXPO EUROPE

May

2024

Join us on June 13th, 2024, at OpenExpo Europe !

Read more


WE WILL BE AT OW2 CON'24

May

2024

We will be speakers on June 12th at 2:40 PM.

Read more


MIGRATE YOUR FLEXISIP SERVICE TO OTHER DISTRIBUTIONS

May

2024

The CentOS 7 Linux distribution will reach its end of life on June 30, 2024

Read more

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