Add AI voice agents to your Voxbone (Bandwidth) phone line using Cartesia. Self-host SIP4AI, configure your credentials, and let AI handle calls in minutes.
Enterprise global DID provider with numbers in 65+ countries.
Ultra-low latency voice AI optimized for real-time conversational applications.
Download and install SIP4AI on your server or local machine.
# Install SIP4AI
curl -sSL https://sip4ai.com/install.sh | bashNow part of Bandwidth. Configure via Voxbone portal or Bandwidth dashboard.
# Set Voxbone (Bandwidth) credentials
export SIP_SERVER=voxbone.sip-provider.com
export SIP_USERNAME=your_username
export SIP_PASSWORD=your_passwordRequires Cartesia API key. Best-in-class latency for voice apps.
# Set Cartesia API key
export CARTESIA_API_KEY=your_api_keyRun SIP4AI with your Voxbone (Bandwidth) and Cartesia configuration.
# Start SIP4AI with cartesia provider
sip4ai --provider cartesia
# SIP4AI will register with Voxbone (Bandwidth) and wait for calls
INFO Registering with SIP server...
INFO Connected to Cartesia API
INFO Ready to handle callsGet started with SIP4AI today. Free for non-commercial use, affordable plans for businesses.