# Callouts

A callout is a call made to a phone number or app using the API.

## Callout Request

 - [POST /calling/v1/callouts](https://developers.sinch.com/docs/voice/api-reference/voice/callouts/callouts.md): Makes a call out to a phone number. The types of callouts currently supported are conference callouts, text-to-speech callouts, and custom callouts. The custom callout is the most flexible, but text-to-speech and conference callouts are more convenient.

## Callout Request

 - [POST /calling/v1/callouts](https://developers.sinch.com/docs/voice/api-reference/voice/conferences/callouts.md): Makes a call out to a phone number. The types of callouts currently supported are conference callouts, text-to-speech callouts, and custom callouts. The custom callout is the most flexible, but text-to-speech and conference callouts are more convenient.