1. [Home](https://www.g2.com/) 2. ... 3. [VoIP Providers](https://www.g2.com/categories/voip-providers) 4. [Linphone Discussions](https://www.g2.com/products/linphone/discuss) [ ![Product Avatar Image](https://images.g2crowd.com/uploads/product/image/large_detail/large_detail_a78075314a1cd54c482f21303bca1263/linphone.png "Product Avatar Image") ](/products/linphone/reviews) [ Linphone ](/products/linphone/reviews) (16)4.4/5 Linphone is an open-source Voice over IP (VoIP) application that enables users to make high-definition audio and video calls, send instant messages, and conduct video conferences over the internet. Compatible with various platforms, including iOS, Android, macOS, Windows, and Linux, Linphone provides a unified communication solution that adheres to standardized protocols, ensuring interoperability with most SIP-compatible systems. Developed in France since 2001, Linphone is recognized for its commitment to security, offering end-to-end encryption for all media exchanges, including voice, video, and text, safeguarding user privacy. Key Features and Functionality: - High-Definition Audio and Video Calls: Supports HD voice and video quality with codecs like Opus, Speex, H.264, and VP8. - Instant Messaging and Group Chats: Facilitates one-on-one and group conversations with features such as message delivery and read receipts, file sharing, voice messages, and ephemeral messaging. - Call Management: Offers call history, call forwarding (blind and attended), management of multiple concurrent calls, call recording with playback, and support for Bluetooth headsets. - Secure Communications: Ensures secure user authentication and end-to-end encryption for all media exchanges, including audio, video, and text, using protocols like SRTP, SRTP-DTLS, and ZRTP. - Cross-Platform Availability: Available on mobile devices (iOS, Android) and desktops (macOS, Windows, Linux), providing a consistent user experience across platforms. - Customization and Integration: Offers a white-label softphone option, allowing businesses to customize the app with their branding and integrate it with existing VoIP platforms. Primary Value and User Solutions: Linphone addresses the need for a secure, reliable, and versatile communication tool suitable for both personal and professional use. By supporting open standards like SIP and RTP, it ensures compatibility with a wide range of VoIP services and devices. Its emphasis on security, through features like end-to-end encryption and secure authentication, protects user privacy and data integrity. The application's cross-platform support and customizable nature make it an ideal choice for organizations seeking a unified communication solution that can be tailored to specific requirements. Show More * * * ### 62.0 Nps Score Already have Linphone? ### All Linphone Discussions Search Most CommentedMost HelpfulPinned by G2Newest All DiscussionsDiscussions with CommentsPinned by G2Discussions without Comments FilterFilter Filter byExpand/Collapse Sort by Most Commented Most Helpful Pinned by G2 Newest Filter by All Discussions Discussions with Comments Pinned by G2 Discussions without Comments ![Verified User](/assets/icons/anonymous-avatar-purple-4ae1032bdb50ee5682003170c8184aee790d25958bd397abbd384ba52c596a7b.svg "Verified User") G2 Verified User • about 6 years ago More Options - [ # call ](/discussions/27299-call) call is not working [ VoIP Providers ](https://www.g2.com/tags/voip-providers) * * * \<0\>0\>Upvotes * * * 0 Comments [![linkedin](/assets/social-logos/linkedin-afe65e46604a5bd5105ab9c856116204040b6b3f2b2d42562fc8071ca0c48ca0.svg "linkedin")](https://www.linkedin.com/shareArticle?mini=true&summary=Ask+Linphone+questions+and+get+answers+from+expert+users+in+our+Linphone+Discussions+section.&title=Linphone+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Flinphone%2Fdiscuss) [![twitter](/assets/social-logos/twitter-61aaec80434c71387b8f7326e480592eae71c0a65afd051d66fce9b75a9bf417.svg "twitter")](https://twitter.com/intent/tweet?text=Linphone+Discussions+%7C+G2&url=https%3A%2F%2Fwww.g2.com%2Fproducts%2Flinphone%2Fdiscuss&via=G2dotcom) [![facebook](/assets/social-logos/facebook-350d0b410d6b10debcf893050e803a8633d53561aa42807b087b8daf9be3668f.svg "facebook")](https://www.facebook.com/sharer/sharer.php?u=https%3A%2F%2Fwww.g2.com%2Fproducts%2Flinphone%2Fdiscuss) [![gmail](/assets/social-logos/gmail-6db42f21e7c254fae201b112bef0dd15d25223a5cbb32691ce80eab43761eadf.svg "gmail")](https://mail.google.com/mail/?view=cm&fs=1&tf=1&to=&su=Linphone+Discussions+%7C+G2&body=https%3A%2F%2Fwww.g2.com%2Fproducts%2Flinphone%2Fdiscuss%0aAsk+Linphone+questions+and+get+answers+from+expert+users+in+our+Linphone+Discussions+section.) 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