Click "Install" and then "Finish" to launch the application. Configuration and Setup
Enter your SIP username, password, and the domain/host provided by your service.
Upon first launch, the account wizard will guide you through the setup. zoiper-free-3.15-setup.exe
Double-click the zoiper-free-3.15-setup.exe file to launch the installation wizard.
💡 Always ensure you download zoiper-free-3.15-setup.exe from a reputable source. Since this is an older version, it may not receive the latest security patches. For professional environments requiring high-level security, consider upgrading to the latest Zoiper Pro. Click "Install" and then "Finish" to launch the application
Choose the destination folder on your hard drive (typically C:\Program Files\Zoiper).
Use the built-in wizard to test your microphone and speakers to prevent echo or low volume. Double-click the zoiper-free-3
Read and agree to the End User License Agreement (EULA).
While Zoiper 5 offers a sleeker UI and advanced encryption, the 3.15 setup remains popular for specific use cases. Some users find the older interface more intuitive for quick dialing, while others use it because it lacks the "freemium" prompts often found in newer software updates. Additionally, if you are using an older operating system like Windows 7, version 3.15 often proves more stable.
Includes an integrated address book that can sync with external sources.