# Conversation Relay guides

You can send audio from live calls to Conversation Relay for real-time transcription and analysis.

## Evaluate

To evaluate whether Conversation Relay is the right solution for your needs, see [Conversation Relay](/docs/voice/conversationrelay).

## Plan and build

Learn how to plan and build with Twilio Programmable Voice and Conversation Relay.

* **[Onboard with Conversation Relay](/docs/voice/conversationrelay/onboarding)**: Use Conversation Relay for real-time transcription, text-to-speech, and voice synthesis.
* **[Pick a voice](/docs/voice/conversationrelay/voice-configuration)**: Choose a text-to-speech voice.
* **[Conversation Relay WebSocket messages](/docs/voice/conversationrelay/websocket-messages)**: Understand the WebSocket messages sent by Conversation Relay and how to use them.
* **[Conversation Relay Best Practices](/docs/voice/conversationrelay/best-practices)**: Follow best practices for building with Conversation Relay.
* **[\<ConversationRelay> TwiML noun](/docs/voice/conversationrelay/conversationrelay-noun)**: Use the `<ConversationRelay>` TwiML noun to route a call to the Conversation Relay service.