← All templatestemplates / outbound-call-agent-with-voicemail-detection-and-transfer

LiveKit Agentsupdated May 28, 2025 · other · outbound-follow-up

Outbound Call Agent with Voicemail Detection and Transfer

An outbound calling agent that initiates phone calls, detects voicemail, looks up availability via function calling, transfers to human operators, and detects intent to end calls. Built with LiveKit SIP and Python Agents Framework, it handles noisy environments with Krisp background voice cancellation.

No demo yetView source Fork template

The numbers

latency—

cost / min—

frameworkLiveKit Agents

The stack

telephonyLiveKit SIP

speech-to-textDeepgram Nova-3

llmGPT-4o

text-to-speechCartesia Sonic-3

System prompt

No prompt published.

Config

config.json

{
  "function_calling": true,
  "models_supported": [
    "pipelined",
    "realtime"
  ],
  "transfer_enabled": true,
  "voicemail_detection": true,
  "speech_to_speech_support": true,
  "background_noise_cancellation": "Krisp"
}

Voice AI recipes, picks, and analysis.

Get the useful new templates plus the occasional teardown of what’s working in production voice AI.