Consumes fewer system resources compared to modern alternatives.

Enter your credentials, including the SIP server/host, username, password, and outbound proxy if required.

Select either SIP or IAX2 depending on your VoIP provider's requirements.

Instead of risking your network security with an outdated version, the recommended path is to download the latest official release——directly from the developer. Why Choose the Latest Version?

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Double-check your server address and password. A single typo will prevent a successful connection to your VoIP provider.

Despite being an older release, Zoiper 3.7 packs essential features that satisfy both casual users and professional call centers. 1. SIP and IAX2 Protocol Support

To start making calls, you need credentials from your VoIP provider. Open Zoiper 3.7 and navigate to > Preferences . Click on Create Account .

Crisp voice quality paired with standard definition video calling capabilities.

You can prioritize which audio codecs Zoiper uses for calls, allowing you to optimize for quality or bandwidth usage based on your network conditions.