> ## Documentation Index
> Fetch the complete documentation index at: https://docs.poly.ai/llms.txt
> Use this file to discover all available pages before exploring further.

<AgentInstructions>

## Submitting Feedback

If you encounter incorrect, outdated, or confusing documentation on this page, submit feedback:

POST https://docs.poly.ai/feedback

```json
{
  "path": "/telephony/twilio/introduction",
  "feedback": "Description of the issue"
}
```

Only submit feedback when you have something specific and actionable to report.

</AgentInstructions>

# Overview

> Connect your Twilio account to use existing phone numbers and SMS with PolyAI

Use Twilio with PolyAI to use your existing phone numbers, SMS infrastructure, and contact center setup.

## Why use Twilio with PolyAI

If your organization already uses Twilio for telephony, you can connect your existing numbers rather than purchasing new ones. This lets you:

* **Keep your current numbers** – No need to port or change numbers your customers already know.
* **Use Twilio SMS** – Send SMS messages during or after calls for confirmations, links, or follow-ups.
* **Integrate with Twilio Flex** – Route calls between your PolyAI agent and live agents in your Flex contact center.

## Integration guides

<CardGroup cols={2}>
  <Card title="Phone number integration" icon="phone" href="./how-to-integrate-voice">
    Connect a Twilio-hosted phone number to your agent. Start here if you just need voice.
  </Card>

  <Card title="SMS integration" icon="message" href="/sms/introduction">
    Set up SMS messaging so your agent can send texts during or after calls.
  </Card>

  <Card title="Twilio Flex integration" icon="diagram-project" href="/integrations/voice/twilio">
    Route calls between PolyAI and your Flex contact center for live agent handoff.
  </Card>
</CardGroup>

## Related pages

<CardGroup cols={2}>
  <Card title="Call handoffs" icon="phone-volume" href="/call-handoff/introduction">
    Configure handoff destinations for live agent transfers
  </Card>

  <Card title="Telephony overview" icon="phone" href="/telephony/introduction">
    General telephony setup and phone number management
  </Card>

  <Card title="Outbound calling" icon="phone-arrow-up-right" href="/telephony/outbound-calling">
    Configure proactive calls through Twilio
  </Card>
</CardGroup>