Create rich and intelligent voice experiences

With the Voice API from, every developer can build or integrate telephony systems. Discover all the possibilities!

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What are you going to build with our Voice API?

If you want to manage your own call flows, you would either have to dig deep into complex call protocols or buy expensive systems. This belongs to the past because of CM's Voice API.

CM's Voice API enables any developer to create and maintain call flows. It provides the required control and flexibility to easily build IVR applications, without the complexity of integrating voice functionalities yourself.

Explore the features and find out new ways to implement Voice to grow your company's success.

  1. 1

    IVR made easy

    The Voice API provides easy-to-use building blocks to create your own IVR applications in a flexible way, while still remaining full control.

  2. 2


    Easily integrate CM's Voice API with the other features of the CM platform, such as Business Messaging, Authentication and Payments.

  3. 3

    Cost effective

    Significant cost savings. No hardware investments and up to 35% reduction on outbound calling costs when combined with CM SIP Trunk.

Start building from scratch or use our templates

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Use our extensive features

Build an application completely from scratch. Create any solution you want using CM's Voice API.

API docs

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Jumpstart with templates

For notifications, one-time-passwords and for example a DTMF menu, we offer template apps. Integrate quickly what you need.

Apps API docs

How can you use our Voice API features?


In- & outbound

Inbound en outbound calling via 1 single API.


Voicemail detection

You decide what happens to your outbound call when a voicemail is detected.



Send/receive Dual Tone Multiple Frequency input



Play pre-recorded prompts



Play Text-to-speech in 20+ languages


Record speech

Record speech input with our API

How does the Voice API work?

The server will call your http(s) server using a POST command and will send JSON data containing information on a new incoming call, a newly setup outgoing call or a status update on a call (for example. done playing audio file). The Voice API will call your server to inform it on updates and ask for the next step(s) to perform.

To the docs
voice API

How to start using our Voice API?

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    Create a Voice API account

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    Start building!

What does our Voice API cost?

Use our API prepaid or postpaid

Country Starting at
Netherlands €0,0094 p/m
Belgium €0,0206 p/m
Germany €0,0055 p/m
France €0,0074 p/m
United Kingdom €0,0103 p/m
Contact us Detailed prices

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