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

# Phone Numbers

> Connect a telephony provider and route real calls to your AI agents.

Connect a provider, add a number, and route inbound and outbound calls to an agent.

## Supported providers

<Tabs>
  <Tab title="EnableX">
    Programmable voice for inbound and outbound calling. Create a project with the Voice service in the EnableX portal, then paste its API credentials here.

    Go to **Phone Numbers → EnableX → Connect your EnableX project** and enter:

    * **App ID** — from EnableX Portal → Project Settings → API Credentials.
    * **App Key (secret)** — stored server-side only, never sent back to the browser.
  </Tab>

  <Tab title="Twilio / Exotel / Plivo">
    Additional providers, connected the same way — paste that provider's credentials under its own tab.
  </Tab>
</Tabs>

## Routing a number to an agent

Once a provider is connected, add the number under **Phone Numbers** and assign it to an agent. Inbound calls to that number are answered by whichever agent it's routed to; the same agent can also be used for outbound campaigns dialing from that number.

## Compliance

Every number is subject to your account's [Compliance](/platform/compliance) settings — the TRAI calling window and Do-Not-Call registry apply automatically to outbound dials, regardless of which provider the number is on.