Add AI voice agents to your Telnyx phone line using Cartesia. Self-host SIP4AI, configure your credentials, and let AI handle calls in minutes.
Developer-friendly telecom with competitive per-minute pricing and global POPs.
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 | bash
Create a Credential Connection in the Mission Control Portal.
# Set Telnyx credentials
export SIP_SERVER=telnyx.sip-provider.com
export SIP_USERNAME=your_username
export SIP_PASSWORD=your_password
Requires Cartesia API key. Best-in-class latency for voice apps.
# Set Cartesia API key
export CARTESIA_API_KEY=your_api_key
Run SIP4AI with your Telnyx and Cartesia configuration.
# Start SIP4AI with cartesia provider
sip4ai --provider cartesia
# SIP4AI will register with Telnyx and wait for calls
INFO Registering with SIP server...
INFO Connected to Cartesia API
INFO Ready to handle calls
Get started with SIP4AI today. Free for non-commercial use, affordable plans for businesses.