Zoiper 3.5 Official

Zoiper 3.5 is a specific version of the widely recognized Zoiper softphone, a software-based application used for Voice over IP (VoIP) communication. While newer versions like Zoiper 5 have since been released, the Zoiper 3 series remains notable for its stability, low resource footprint, and cross-platform flexibility. Core Functionality

: For business deployments, prices drop based on quantity. For example, some distributors list Zoiper 3 at roughly 3,080 RUB (~$33–$35 USD) per license when purchasing 50–99 seats. Free Version zoiper 3.5

What is Zoiper?

Universal Features (Free & Pro)

• SIP & IAX2 Support: Works with Asterisk (IAX2) and every major SIP provider (VoIP.ms, Flowroute, Twilio, Callcentric).
• Multiple Lines: Support for up to 5 simultaneous SIP accounts.
• Basic DTMF: In-band and RFC 2833 tones for navigating IVR menus ("Press 1 for sales").
• Call Recording: Available, but with a watermark in the free version.
• Mute & Hold: Standard call controls.

Legacy Systems: Often retained by IT departments managing older servers that have specific compatibility requirements with IAX2. Zoiper 3

Zoiper 3.5 is a legacy, high-performance VoIP softphone known for its low system resource consumption and support for multiple protocols like SIP, IAX, and XMPP SIP & IAX2 Support: Works with Asterisk (IAX2)