# Programmable Voice configurations

Configurations are reusable settings for your voice workflows. Instead of passing parameters directly in your code or in TwiML, you can store them in a Voice Configuration and apply it by ID. A voice workflow can use either a Voice Configuration or inline parameters, but not both.

You can manage Voice Configurations in [Twilio Console](https://1console.twilio.com) or with the Voice Configuration APIs described in this section.

## Base URLs

To find the base URL for a resource, see the following table.

| Resource                                                                                       | Base URL                                     |
| ---------------------------------------------------------------------------------------------- | -------------------------------------------- |
| [Recording Configuration](/docs/configurations/recording-configuration-resource)               | `https://voice.twilio.com/v2/Configurations` |
| [Batch Transcription Configuration](/docs/configurations/transcription-configuration-resource) | `https://voice.twilio.com/v2/Configurations` |
| [Batch Transcription](/docs/configurations/transcriptions-resource)                            | `https://voice.twilio.com/v3/Transcriptions` |

## Authentication

To authenticate requests to the Twilio APIs, Twilio supports [HTTP Basic authentication](https://en.wikipedia.org/wiki/Basic_access_authentication). Use your *API key* as the username and your *API key secret* as the password. You can create an API key either [in the Twilio Console](/docs/iam/api-keys/keys-in-console) or [using the API](/docs/iam/api-keys/key-resource-v1).

**Note**: Twilio recommends using API keys for authentication in production apps. For local testing, you can use your Account SID as the username and your Auth token as the password. You can find your Account SID and Auth Token in the [Twilio Console](https://www.twilio.com/console).

Learn more about [Twilio API authentication](/docs/usage/requests-to-twilio).

## Get help

If you have questions or feedback about Programmable Voice Configurations, [contact Twilio support](https://help.twilio.com).