Getting started

Step 1

Get your number

Step 2

Assign your number

Step 3

Select a language

Account required!

Using the SMS API requires signing up for a free account on the Sinch Customer Dashboard. If you haven't already done so, sign up now!

Follow the steps below to learn how to quickly start making calls using the Sinch Voice API:

1. Get your number

Get your free Sinch testing number. When you sign up for a Sinch Customer Dashboard account, you get a free virtual number for testing. You must activate your test number before you can use it. To activate your number, simply click the link.

Need help?

Click here to learn how to activate your free number.

Ready to purchase a number?

Click here to learn how get a number from Sinch.

2. Assign your number

Assign your number to your Voice app. After your number is activated, navigate to your apps. You'll be redirected to the Test Application which was automatically created for you. Under Assigned Numbers, click Add Numbers and assign your free number to your app.

3. Select a language

Now you're ready to get started making calls with Voice API.

In addition to our REST API guides that highlight production-ready features, we also offer Unified SDK guides that allow you to explore exciting new features that are in development.

REST API guides

You can access the Voice API directly through HTTP requests. Select your preferred language and learn how to set up a simple application:

Unified SDK guides

Our Unified SDKs provide cross-product functionality and streamline code development. Select your preferred language SDK and set up a simple application:

Additional resources

View the whole API Reference.

If at any point you need more help, you can find support documentation and answers to frequently asked questions in the Sinch Support Community.