Create new engagement and connections with voice calling
![Number masking animation](/sites/default/files/2021-11/VoiceCallingNumberMasking.png)
![Illustration of two people talking](/sites/default/files/styles/small_hq/public/image/2021-08/Illustration_updated_persons_talking_1050x811.png?itok=mrw7y1uG)
{
"method": "ttsCallout",
"ttsCallout": {
"cli": "+14045001000",
"destination": {
"type": "number",
"endpoint": "+14045005000"
},
"locale": "en-US",
"text": "Hello, this is a call from Sinch."
}
}
Build a custom voice flow for your business with our Voice API
Got questions? We've got answers!
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What's the difference between phone calling and in-app voice calling?
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 voice 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 computers or mobile devices.
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How do I get started with Sinch phone calling?
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.
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How do I rent 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.
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Can I integrate Sinch Voice Calling via SDK?
Users usually integrate our Voice Calling via our calling and callback REST APIs. At the moment, we offer a C# backend SDK available as a NuGet. New SDKs will be available in the future.
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Can I voice-enable my local 10DLC number?
Absolutely! Apart from SMS and MMS, 10DLC also supports 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!
Our pricing page is on the way! In the meantime, get in touch to discuss pricing
Related products and features
![hand with phone and channel icons](/sites/default/files/styles/small_hq/public/image/2023-10/hand_omnichannels_0.png?itok=zmYNh7bl)
![Abstract Magic Quadrant](/sites/default/files/styles/small_hq/public/image/2023-08/Sinch_Gartner_MQ_abstract_element_white_background.png?itok=23j1ARpb)
What are you waiting for? Step up customer interactions now
![Illustration of a girl talking in a handset](/sites/default/files/styles/medium_hq/public/image/2021-09/Illustration_contact_us_girl_tablet_phone_0%20%281%29.png?itok=A_4zR1uE)
Try out Sinch now - for free!