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PortSIP PBX is licensed based on the number of extension registrations, no simultaneous calls and extension numbers limited. All editions support an unlimited number of extensions, unlimited simultaneous calls, and full features.

• One extension registered from multiple devices/apps just count as one registration.
• No feature limited, including free PortSIP VoIP SDK, free Client App, WebRTC SDK and App, video conference.
• All quotations include 1 year free updates and technical support.
• Maintenance – after 1 year the cost for annual maintenance is 20% of the perpetual license cost.
• Note: Late maintenance renewal is not available.