Voice API
Design voice interactions to match your exact needs with Sinch’s programmable Voice API, empowering you to manage every part of the call interaction.
Join over 150,000 businesses, including 8 of the 10 largest tech companies in the world.
Try it out now! Our portal makes it super easy to set up your first call – no credit card is needed.
Get started quickly with our intuitive, scalable voice API:
Create a test account – no credit card needed.
Get your authentication credentials.
Trigger a text-to-speech voice callout to your verified number.
Now you can pick up your call.
Done!
Sinch’s programmable Voice API enables you to build a superior voice experience with features that empower your business. Automate customer interactions, enhance efficiency, or personalize each call to fit your specific need.
Scale effortless via multiple voice channels, whether you want to call from your mobile app, web application, your traditional phone line or SIP infrastructure anywhere on the planet, our global voice platform makes it happen!
Take control of your voice, video, verification, and messaging channels with the Sinch Developer Dashboard, featuring built-in analytics, reporting, and real-time performance insights.
It’s simple! First, create an account on the Sinch portal. Then, create a voice application, and you’ll receive a set of credentials (key and secret). With these credentials, you can use our REST APIs to trigger and receive calls, bind multiple calls into a conference, manage your call flow via our callback API, and more. You can also rent and manage phone numbers.
You can easily find numbers from a wide range of countries in the portal – just sign in! Some countries require a local presence and additional company information before we can source you a number. If you’re interested or have any questions, talk to us.
Phone calling is a traditional telephone call – both the caller and the person being called are using a phone line via a mobile device or landline. In-app calling is a software-based call with audio and/or video information sent over the internet between the caller and the recipient. Once integrated into your app, users can make calls from their browsers or mobile apps anywhere in the world.
Sinch offers SDKs for in-app calling.
Yes! The Sinch SDKs make it easy to interact with the Voice API using your favorite programming languages. We currently support Node.js, Java, .NET, and Python. These SDKs provide a consistent framework to handle features like pagination, error codes, and authentication, streamlining development across different APIs. Additional SDKs may be introduced in the future.
Absolutely! Apart from SMS and MMS, 10DLC or ten-digit phone numbers also support voice calls. And of course, with our super network, carrier-grade platform, and deep technology knowledge, you’re sure to get a top-notch, cost-effective voice solution! Enable both voice and SMS on your phone numbers in the United States, Canada, United Kingdom, France, and Australia.
“Sinch In-App Voice Calling satisfies the needs of Cuban people who don’t have an internet connection and want to stay in touch with friends and family outside of Cuba. The connection is very convenient – it’s great quality!”
“It’s been a great experience working with Sinch because feedback flows both ways. They think deeply about the problem we’re trying to solve.”
Connect with Sinch today and explore the full potential of programmable Voice API solutions tailored to your business.
