Call Control

Make, receive and control your calls globally with a voice API developers trust.

Deliver a truly amazing customer experience with the most flexible voice API.

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Ready to see more? Explore our developer docs

features

Embed voice in your application in minutes with powerful features.

Conference Calls

Connect people and teams across the globe with feature-rich audio conferencing.

Media Streaming

Access the raw audio stream of calls to integrate advanced AI/ML capabilities.

Text-to-Speech

Speak dynamic text in multiple accents and languages, powered by Amazon Polly.

Answering Machine Detection

Customize your experience with industry-leading accuracy.

Agent Coaching

Speak privately on a call to provide feedback and guidance to an agent.

Audio Playback

Play pre-recorded prompts, advertising or custom hold music.

Call Recording

Integrate dual-channel recordings to capture all or part of calls.

Smart IVR

Build a multi-level IVR to intelligently route your call flows.

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Questions on setup? Check out our quickstart guide

The programmable voice API that puts developers in control.

Get started in minutes with comprehensive documentation and support.

Quickstart guides
Easy-to-follow tutorials
SDKs in your preferred language
API reference docs

Explore the API docs

new

Switch to Telnyx in minutes using your existing XML code.

TeXML Translator makes it super easy for you to use your XML based voice applications with the Telnyx API.

If you have an XML application, configure your Telnyx portal connection to point at your XML endpoint. When a call comes in, we’ll do the rest.
Or, build a new XML application using simple TeXML commands—called verbs—which you wrap in an XML file.
You'll realize significant cost savings and call quality improvements instantly.

See the Docs

Need help switching to Telnyx? Check out our demo video

Use Cases

What can you build with Telnyx?

Call Tracking
Attribute calls to marketing channels to manage campaign ROI
Cloud IVR
Build a scalable IVR for a better customer experience and lower operational costs
UCaaS
Make, receive, route, manage, record and conference calls, all in one place
Contact Center
Automate and optimize call flows to better manage customer conversations

See all use cases

Choose Telnyx for our global, scalable voice API.

Call quality guaranteed
Our purpose-built global IP network means greater reliability and security with lower latency.
Deep Number Inventory
We give you infinite choice and flexibility with phone numbers in over 60 countries.
Granular control in real time
Simultaneous bidirectional data transmission for real-time interactive command and control.
Media Streaming
Duplicate and deliver call media to multiple recipients in real time to unlock new customer insights.
Unparalleled 24/7 support
Our team of in-house engineers are available around the clock.

See our voice API pricing

Frequently Asked Questions

How do I build with the Telnyx voice API?
To get started, sign up for a Portal account, then follow the 4 remaining steps in our quickstart guide to create an application, buy a number, assign it to your app and create an outbound voice profile. Then, use our SDKs to start building.

Can I record calls with Call Control?
Yes, you can use the Telnyx voice API to record calls using the record_start command. You’ll find code snippets to help you do this quickly and easily in our developer center.

What is a voice API?
A voice API is a tool that software developers use to make and receive phone calls using an Application Programming Interface (API). A voice API connects internet-based applications to the Public Switched Telephone Network (PSTN).

Does Telnyx offer text-to-speech capabilities?
Absolutely—we leverage Amazon Polly to provide a conversational experience, available across multiple languages and accents. You can learn more about using the speak_text command in our developer center, along with handy code snippets.

How much does Call Control cost?
You can find the latest pricing for Call Control here. Telnyx offers even greater discounts as you scale, or when you’re ready to commit to monthly usage—talk to our sales team about custom pricing.

Can I use XML code with the Telnyx voice API?
You can! We’ve developed a tool called TeXML Translator to make it easy for you to use your XML based applications with the Telnyx voice API. Follow the TeXML setup guide in our developer center to get started.

Ready to get started?