Welcome on Linphone Free SIP Service

This service allows you to create a free SIP account (as in free beer) on our linphone.org service. Once registered you will be able send instant messages and make audio and video calls to other SIP addresses using using the Linphone app. The sip.linphone.org service is powered by Flexisip proxy, deployed in high availability mode. This web portal is based on the Flexisip account manager software.

Please note that on our free SIP service platforms we do not offer any service guarantee and no commercial support.

Dear community members,

We would like to inform you that a vulnerability was discovered in the source code powering this service on July 15, 2025.

The issue has since been patched, and the vulnerability was fully resolved on July 23, 2025.

Although we have found no evidence that this vulnerability was exploited, we strongly recommend that all users update their passwords as a precautionary measure.

Thank you for your understanding and continued support.

— The Linphone Team

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