Voice capabilities heard loud and clear.

Build easier and reach farther with our unique features.

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The most-loved Voice features on our powerful platform.

WebSockets

Easily integrate with third party vendors in real time, including artificial intelligence bots.

Voice Quality Engine

Deliver high quality voice experiences using our reliable global carrier network.

Outbound Network

Connect with virtually anyone in the world via a single API, completely hassle-free.
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Gain advanced call control and routing.

Nexmo Call Control Objects

Experience more flexibility using a JSON array of actions to control the flow of your Voice API calls.

Conferencing

Create globally supported audio conferences with just a few lines of code.

Audio Playback

Enable a rich calling experience with customized voice prompts and hold music.

Auto-Join Conference Calls

Make conference calls effortless by having callers automatically join as a meeting begins.

Answering Machine Detection

Provide a customized experience depending on whether a live person or answering machine is reached.

Recording Management

Integrate stored call recordings with your preferred workflow tools or build your own dashboard.

Text-to-Speech

Scale your calls globally with the ability to speak text to callers in multiple languages and accents.

Audio Streaming

Easily stream stored media audio files right from your NCCO.

Early Media Support

Play sounds such as ringback tone to the calling party before the call is answered.

Reach customers around the globe.

Local Phone Numbers

Instantly provision local, toll-free, mobile, and landline numbers in over 65 countries worldwide.

Clean Phone Numbers

Avoid unwanted calls or spam with our phone numbers from top tier suppliers.

Toll-Free Phone Numbers

Communicate more efficiently through SMS or voice calls with a business toll-free number.

Elastic SIP Trunking

Extend your reach to the PSTN using your existing VoIP infrastructure and the Nexmo cloud.

Easily manage your services.

Monitor

We’ll help you troubleshoot problems quickly and thoroughly.

Subaccounts

Additional secondary accounts help you organize multiple applications or services.

User Permissions

Scale and assign permissions by user to avoid confusion and mix-ups at any level.

Dashboard Analytics

Get detailed insights on your campaigns, down to the recipient’s cellular network and country of origin.

Reporting

Automate complex reporting tasks and seamlessly integrate usage data with any app.

Nexmo Developer

Read the docs, explore our libraries, and connect with other developers.

Knowledge Base

Quick answers to common questions on API interfaces, regulations and more.

Let’s build something great together.

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