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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.

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

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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

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

Free SIP service


There are 653557 users registered with this service.


Linphone.org hosts a free SIP service that allows users to make audio or video calls using SIP addresses via the domain sip.linphone.org. You can create your own sip address, for example "sip:john@sip.linphone.org" using the form below, and your friends can call you using this SIP address.

Technically, this service runs with a dual host, on a highly available, Flexisip proxy server deployment.



Create an account


(this will be your SIP username)

Manage your account

Please enter your username OR your phone number (depending on what you used when you created your account), and the associated password. If you use your phone number, you may have to follow the process to recover your password first.


Recover your password



All fields identified by an asterisk (*) are mandatory.
The data collected with this form are electronically stored by Belledonne Communications in order to process your request.
You can exercise your right of access to, correction of and deletion of your personal data, by visiting our Privacy policy page.

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