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APIs & SDKs

VaxVoIP Agent AI SDK

SIP-to-OpenAI gateway for building real-time multilingual AI voice agents

An SDK that bridges SIP servers and IP-PBX systems with OpenAI real-time AI models to build multilingual voice agents for live phone calls.

Overview

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VaxVoIP Agent AI SDK is a software development kit that connects SIP servers and IP-PBX telephone systems directly to OpenAI's real-time speech-to-speech AI models. It acts as a communication bridge, handling the complex SIP audio integration so developers can focus on building voice agent applications. The SDK processes live SIP call audio in real-time and enables natural, multilingual conversations between callers and AI agents. It includes working sample projects in Visual C# .NET, Visual Basic .NET, and Delphi, plus technical documentation and a 30-day fully functional trial.

Feature notes

  • SIP server and IP-PBX integration
  • OpenAI real-time speech-to-speech models
  • Multilingual voice interaction
  • Real-time SIP audio processing
  • Sample source code in C#, VB.NET, and Delphi
  • 30-day fully functional trial
  • Simplified OpenAI integration
  • Commercial B2B deployment licensing

Pricing

Pricing model: Paid

Annual commercial licensing: 10 concurrent calls $1,480, 20 concurrent calls $2,620, 40 concurrent calls $4,420, 80 concurrent calls $6,420, 160 concurrent calls $8,860, Unlimited concurrent calls $10,680, Unlimited services and unlimited concurrent calls $16,860 (all USD, one year, contact sales)

FAQ

What does VaxVoIP Agent AI SDK do?
It works as a SIP-to-OpenAI gateway between a SIP server or IP-PBX and OpenAI real-time AI models.
Do I need to manage the OpenAI integration myself?
The SDK is designed to avoid the need to handle complex OpenAI APIs, AI protocols and low-level integration details directly.
Can it process live SIP call audio?
Yes. The SDK processes live SIP call audio, enabling real-time conversations between callers and AI voice agents.
Does it support multiple languages?
Yes. It supports multilingual AI voice agents that can respond naturally to callers in multiple languages.
Which sample-code languages are available?
Sample projects are available for Visual C# .NET, Visual Basic .NET and Delphi.

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