VaxVoIP SIP Voice Agent AI SDK

VaxVoIP SIP Voice Agent AI SDK is a Windows development toolkit for creating multilingual AI voice agents that communicate with callers over SIP telephone networks. It connects SIP calls to OpenAI Realtime, helping developers build applications that support natural, two-way spoken conversations for customer service, automated reception, outbound calling, telephone surveys, and business information services. Building AI telephone applications normally requires integrating call signaling, live audio, and communication with AI services. VaxVoIP simplifies the telephony-to-AI connection by bridging SIP call audio with OpenAI’s real-time speech-to-speech models. Developers can concentrate on conversation design, application behavior, and business workflows while using the SDK as the communication foundation. How It Works A compatible SIP phone or softphone registers with the SIP server configured in the application. Once a call is established, the SDK sends the caller’s live audio to OpenAI Realtime and returns the generated spoken response to the caller. This enables interactive voice conversations in multiple languages through existing SIP communication infrastructure. To begin evaluating the sample application, developers enter an OpenAI API key, configure SIP users, start the server, and connect a SIP client. The sample projects and documentation explain the integration workflow and provide a starting point for customization. Applications and Use Cases • AI receptionists that welcome callers and answer common business questions. • Customer support agents that provide multilingual telephone assistance. • Autodialer applications that combine outbound SIP calling with conversational AI. • Survey agents that ask questions and collect spoken responses. • Information services that explain opening hours, products, and business services. • Conversational IVR applications that let callers describe their needs naturally. Key Features • SIP call integration with OpenAI Realtime. • Live audio bridging for two-way speech-to-speech conversations. • Multilingual interaction for callers speaking different languages.