Linphone is a free and open-source VoIP communication application for Windows that allows users to make voice and video calls, send instant messages, share files, and manage SIP accounts over the internet.
Based on the SIP protocol, Linphone can work with the built-in Linphone service or with third-party SIP providers. It supports both personal communication and business-oriented deployments, making it suitable for users who need a flexible alternative to traditional phone services.
The application supports HD audio and video calls, group meetings, instant messaging, file sharing, SIP account management, encryption, and remote configuration. It is also available on Windows, macOS, Linux, Android, and iOS.
What's New
Flexisip Account Manager provides tools for managing SIP accounts and configuring Linphone deployments:
FlexiAPI – Provides APIs that can be integrated into existing administration systems for managing user accounts.
Remote Configuration Server – Generates configuration files that can be distributed to Linphone clients, simplifying deployment and provisioning.
Web Administration Platform – Provides a browser-based interface for administrators to manage SIP services and user accounts.
Key Features
HD Audio and Video Calling – Supports high-quality voice and video communication over the internet.
Group Calling and Meetings – Participate in audio and video conferences with multiple users.
SIP Support – Works with SIP accounts and third-party SIP providers.
Instant Messaging – Send individual and group messages directly through the application.
File Sharing – Share files during conversations and group chats.
End-to-End Encryption – Supports secure communication using encryption technologies such as SRTP, ZRTP, and DTLS.
Adaptive Bitrate – Automatically adjusts media quality according to network conditions.
Multiple Audio and Video Codecs – Supports codecs including H.264, H.265, VP8, and AV1, depending on the platform and configuration.
Push Notifications – Supports integration with Apple's and Google's push notification systems on mobile platforms.
Remote Configuration – Administrators can configure accounts and client settings remotely using QR codes or URLs.
IPv6 Support – Supports modern IPv6 networking environments.
Hardware Acceleration – Can use hardware acceleration for multimedia processing when supported by the system.
Cross-Platform Support – Available for Windows, macOS, Linux, Android, and iOS.
User Interface
Linphone uses a relatively clean interface centered around contacts, conversations, and call controls.
The main interface provides quick access to contacts, recent calls, messages, and communication features. Advanced configuration options allow users to manage SIP credentials, network settings, audio and video devices, codecs, bandwidth limits, and security settings.
Although the basic functions are easy to access, configuring SIP accounts and advanced networking options can require some technical knowledge.
Installation and Setup
Installing Linphone on Windows is straightforward.
- Download the Windows installer.
- Run the installer and follow the setup wizard.
- Launch Linphone after installation.
- Sign in with an existing Linphone account or configure a SIP account.
- Configure the microphone, speakers, and webcam.
- Adjust network, codec, and security settings if necessary.
- Add contacts and start making calls or sending messages.
Advanced users can configure Linphone with their own SIP infrastructure or integrate it with business communication systems.
How to Use
Create or Configure an Account – Sign in with a Linphone account or enter the credentials provided by your SIP service provider.
Add Contacts – Add SIP addresses or other contacts to the contact list.
Make a Voice Call – Select a contact and choose the voice call option.
Start a Video Call – Select the video call option when both parties have compatible cameras and codecs.
Send Messages – Open a conversation and send text messages or files.
Configure Audio and Video – Select the preferred microphone, speakers, webcam, and supported codecs in the settings.
Configure Security – Enable the appropriate encryption and authentication options when required.
FAQ
What is Linphone?
Linphone is an open-source SIP-based communication application for making voice and video calls, sending messages, and participating in conferences over the internet.
Is Linphone free?
Yes. Linphone is free and open-source. However, the cost of calls may depend on the SIP provider or telecommunications service being used.
Does Linphone support SIP accounts?
Yes. SIP is the foundation of Linphone's calling, messaging, and presence functionality.
Can I use my own SIP provider?
Yes. Linphone can be configured to work with compatible third-party SIP services.
Is Linphone available for mobile devices?
Yes. Linphone is available for Android and iOS in addition to Windows, macOS, and Linux.
Does Linphone support video calls?
Yes. Linphone supports one-to-one video calls as well as video conferencing features.
Is Linphone secure?
Linphone supports multiple security mechanisms, including TLS, SRTP, ZRTP, and DTLS. The actual level of security also depends on how the accounts and communication infrastructure are configured.
Alternatives
Zoiper – A SIP softphone designed for voice and video communication with support for multiple VoIP providers.
MicroSIP – A lightweight open-source SIP client designed primarily for Windows.
Jitsi – An open-source communication platform supporting video meetings, messaging, and collaboration.
Bria – A professional softphone solution designed for SIP-based communication and business users.
Pricing
Linphone is free and open-source.
Using Linphone itself does not require a subscription, although third-party SIP providers may charge for telephone numbers, outgoing calls, incoming calls, or other telecommunications services.
System Requirements
- Operating System: Windows 10 or later
- Processor: Modern Intel or AMD processor
- RAM: 2 GB or more recommended
- Storage: At least 200 MB of available space
- Internet Connection: Required for VoIP communication
- Microphone: Required for voice calls
- Webcam: Required for video calls
PROS
- Free and open-source
- SIP-based and highly flexible
- Supports voice and video calls
- Group calling and messaging
- File sharing
- Strong encryption options
- Cross-platform support
- Supports third-party SIP providers
- Remote configuration capabilities
CONS
- SIP configuration can be complicated for beginners
- Some advanced features require technical knowledge
- Call quality depends heavily on network conditions and SIP infrastructure
- Business deployments may require additional server-side configuration
Conclusion
Linphone is a powerful open-source VoIP application for users who want more control over internet-based communication. Its SIP support allows it to work with Linphone's own services as well as compatible third-party SIP providers.
With HD voice and video, instant messaging, group communication, file sharing, encryption, and extensive configuration options, Linphone is suitable for both individual users and organizations running their own VoIP infrastructure.
For users who simply want an easy-to-use calling application, simpler alternatives may be more convenient. However, for users who need SIP support, open-source software, cross-platform compatibility, and advanced communication controls, Linphone is a strong choice.
