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Build your first phone agent in 5 minutes
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Build
Setup conversation flow agent
Setup single / multi prompt agent
Create chat agent
Set language for your agent
Understand user speech better
Generate better responses from LLM
Customize the synthesized speech
Integrate telephony features
Provide context to the agent
Test
Testing Overview
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LLM Simulation Testing
Audio Testing
Deploy
Purchase phone number
Connect to custom telephony providers via SIP
Make & receive phone calls
International Calling and Fees
Create Chat Completion
Retell Website Widget
Enable SMS capabilities
Setup versioning for agents
Batch Calls
Increase call pickup rate
Connect to web call
Understand concurrency & limits
Monitor
Monitor sessions via dashboard
Get analytics insight
Register & handle webhooks
Post Call Analysis
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Fix agent behaviors
Debug phone call issues
Prevent abuse
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Integrate LLM
Setup WebSocket Server
LLM WebSocket
Assistant
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