Telephony Integration Connector for Conversational AI

A WebSocket connector that bridges Vonage Voice API and Video API calls to ElevenLabs Conversational AI agents. Supports inbound and outbound PSTN calls, SIP trunks, Audio WebRTC clients, and Video WebRTC clients across multiple platforms. Enables voice calls from cell phones, landlines, and web applications to interact with speech-to-speech AI agents.

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The numbers

latency—

cost / min—

frameworkElevenLabs Conversational

The stack

telephonyVonage

speech-to-textElevenLabs Scribe

llmGPT-4o

text-to-speechElevenLabs Flash v2.5

System prompt

No prompt published.

Config

config.json

{
  "port": 6000,
  "client_events": [
    "audio",
    "user_transcript",
    "agent_response",
    "interruption"
  ],
  "tts_output_format": "PCM 16000 Hz",
  "websocket_enabled": true
}

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