Problem : Inbound calls to Twilio number not reaching AI agent Potential causes : Incorrect Account SID/Auth Token, webhook configuration issues, Twilio number not configured for voice Solution : Verify credentials in ElevenLabs dashboard, check Twilio Console phone number settings, ensure voice webhook URL is correctly set

Authentication Failures

Problem : Twilio authentication errors preventing integration Potential causes : Expired or incorrect Auth Token, account access issues Solution : Regenerate Twilio Auth Token, update credentials in ElevenLabs, verify Twilio account status

Problem : Poor audio quality or silence during calls Potential causes : Incorrect audio format settings, network latency, phone signal issues Solution : Verify μ-law 8kHz audio format configuration, check network connectivity, use Twilio Voice Insights for call quality analysis

Integrations

Twilio

Connect Twilio to ElevenLabs Conversational AI Voice Agents

Use AI Voice Agents with your Twilio phone numbers for seamless, automated inbound and outbound calls

Add Integration Contact sales

Setup time

10-15mins

Difficulty

Intermediate

Let your AI Assistant handle calls with Twilio

Connect ElevenLabs Conversational AI with your Twilio telephony to automate and enhance customer calls using your current Twilio numbers. This native integration enables AI-driven handling of both inbound and outbound calls on Twilio's platform without any changes to your existing phone infrastructure.
Key capabilities: AI-powered conversations on every call, real-time voice processing with sub-second response times, global scale with enterprise-grade reliability, and seamless integration with your existing Twilio setup.
Problems it solves: Eliminates the need for complex telephony infrastructure, reduces operational call handling costs, provides 24/7 intelligent call answering, and enables scaling voice operations without adding headcount.
Developer experience: Simple API integration with automatic webhook configuration, no manual TwiML setup required, and plug-and-play deployment in minutes.

Features

Integrations features

Powerful capabilities for building scalable AI voice agents with enterprise-grade reliability

Seamless Inbound/Outbound Handling
- AI agents can both answer incoming calls and initiate outbound calls through Twilio
- Full 2-way voice automation with smooth hand-off to AI agents
- Support for complex call flows and intelligent routing
- Developer benefit: Single API integration handles both call directions without additional configuration
Enterprise-Grade Security
- Twilio's trusted APIs with webhook signing ensure only authorized calls reach your AI agent
- HTTPS encryption for all call signaling and voice data streams
- GDPR and HIPAA compliance for sensitive data handling
- Developer benefit: Built-in security without additional implementation overhead
Real-Time, Low Latency Responses
- Optimized for real-time voice interaction with sub-second speech responses
- Twilio's global network combined with ElevenLabs' low-latency AI pipeline
- Natural conversation flow without awkward pauses
- Developer benefit: Production-ready performance that scales automatically
Use Existing Infrastructure
- No infrastructure changes required - continue using your same Twilio phone numbers
- Preserve existing telephony investments and configurations
- Customers dial familiar numbers with AI enhancement behind the scenes
- Developer benefit: Zero migration effort, instant enhancement of existing setup
Global Scale & Multilingual Support
- Twilio's global carrier network operating in 180+ countries
- ElevenLabs supports 31+ languages for multilingual voice conversations
- Carrier redundancies for consistent performance worldwide
- Developer benefit: Built-in global reach without regional infrastructure complexity

Installation

Installation guides

Step-by-step setup:
1. Import Your Twilio Number: In ElevenLabs dashboard, navigate to Phone Numbers and add your Twilio phone number with Account SID and Auth Token
2. Automatic Configuration: ElevenLabs automatically configures voice webhooks for your Twilio number
3. Assign AI Agent: Select which AI voice agent handles calls on that number
4. Test Integration: Make test calls to verify AI agent responses and conversation flow
5. Enable Outbound: Configure outbound calling capabilities for proactive customer engagement
Code examples: API endpoints for programmatic configuration and webhook setup
Authentication setup: Secure credential management and token configuration

Troubleshooting

Troubleshooting & support

Common issues, solutions, and developer resources for smooth integration

Contact support

Other resources

Twilio Docs ElevenLabs Conversational AI Documentation ElevenLabs Quickstart Guide ElevenLabs Developer API ElevenLabs Discord

Twilio

www.twilio.com

Setup time

10-15mins

Difficulty

Intermediate