Voice API
Lead the conversation and deliver a better customer experience with our programmable Voice API. Personalize the WebRTC and PSTN (Public switched telephone network) calling experience with user context and data at your fingertips. Innovate, streamline, and scale with flexible voice capabilities—all on a reliable, high quality global carrier network billed on a per-second basis so you pay only for what you use.
Voice API Features
It's not just about making phone calls.

AI Enablement
Our Voice API enables the creation of automated and personalized customer interactions with AI.
From voice bots to customized conversational AI and analytics, we have you covered with tools, guides, and seamless integrations to differentiate your customer experiences while optimizing workflows.
- Add voice control and enable easy-to-use self-service in more than 120 languages with Automatic Speech Recognition.
- Easily integrate with third party vendors in real time, including artificial intelligence bots.
- AI Studio is a low-code conversation design tool that empowers developers and non-developers alike to create and deploy customer engagement experiences that operate in natural language.

In-App Voice
Extend calling experiences globally while keeping users on your brand's platform
Keep users engaged on your mobile app, browser, and contact center platform with WebRTC click-to-call global connectivity and extensibility to the PSTN. Enjoy seamless integrations to our Voice API and AI building blocks. - Make and receive calls globally within the browser-based contact center application and easily add remote agents. - Augment your conversational commerce experiences by enabling customers to call and message within a mobile app or website. - Integrate voice and social channels to personalize interactions and build context.

Flexible Experiences
Extend, customize, and differentiate your customer experiences.
Our Voice API enables an interconnected suite of solutions that extends IP Voice and PSTN calling experiences on a global scale and in multiple languages.
Deliver seamless communications with Programmable SIP. Bring the Voice API functionality, such as multichannel recording, IVR, Text to Speech, WebSocket connectivity for AI integrations, and the power of contextual conversations to your platform.
Power intelligent customer experiences in the Contact Center. Enable a wide range of voice and AI interactions, including IVRs, alerts, and more.

AI Enablement
Our Voice API enables the creation of automated and personalized customer interactions with AI.
From voice bots to customized conversational AI and analytics, we have you covered with tools, guides, and seamless integrations to differentiate your customer experiences while optimizing workflows.
- Add voice control and enable easy-to-use self-service in more than 120 languages with Automatic Speech Recognition.
- Easily integrate with third party vendors in real time, including artificial intelligence bots.
- AI Studio is a low-code conversation design tool that empowers developers and non-developers alike to create and deploy customer engagement experiences that operate in natural language.

In-App Voice
Extend calling experiences globally while keeping users on your brand's platform
Keep users engaged on your mobile app, browser, and contact center platform with WebRTC click-to-call global connectivity and extensibility to the PSTN. Enjoy seamless integrations to our Voice API and AI building blocks. - Make and receive calls globally within the browser-based contact center application and easily add remote agents. - Augment your conversational commerce experiences by enabling customers to call and message within a mobile app or website. - Integrate voice and social channels to personalize interactions and build context.

Flexible Experiences
Extend, customize, and differentiate your customer experiences.
Our Voice API enables an interconnected suite of solutions that extends IP Voice and PSTN calling experiences on a global scale and in multiple languages.
Deliver seamless communications with Programmable SIP. Bring the Voice API functionality, such as multichannel recording, IVR, Text to Speech, WebSocket connectivity for AI integrations, and the power of contextual conversations to your platform.
Power intelligent customer experiences in the Contact Center. Enable a wide range of voice and AI interactions, including IVRs, alerts, and more.
Learn more about our Voice APIs
Interested in how our Voice APIs can help your business? Connect with a Deutsche Telekom API expert: fill out the form and we'll get back to you shortly..