CTI API: Seamless integration for optimal telephony

With the NFON CTI API, you can seamlessly integrate your cloud telephony into existing systems and applications.

Contact us

Start or end calls directly from your app

With the NFON CTI API, you can extend your application to start or end calls directly from the app. This means that your users benefit from intuitive operation, and your customers experience even faster and more convenient service.

Optimise the receipt of calls

For incoming calls, all relevant information from your application can be displayed directly – for example, the name of the caller, the number of open orders, or predefined actions such as opening the contact or starting an input mask to create a new contact.
This means that your team has all the important data at their fingertips, and they can respond to customer inquiries faster and more specifically.

Call Analytics – All conversations at a glance

Thanks to comprehensive call data in real time, you always have an overview of incoming and outgoing calls. The data can be stored directly in your application and enables seamless tracking of all customer contacts – for greater transparency, control and efficiency.

Integration in 3 steps

From registration to your first API call – we make it as simple as possible.

1. Get your API key

Fill in the PDF document below and send it to support@nfon.com to gain free and quick access.

View document

2. Read the documentation

Explore our clear and well-structured API documentation with plenty of practical examples.

Learn more

3. Start the integration

Start developing right away and see your first results instantly.

Frequently asked questions

Are there any costs associated with the API?

No, using the API is free of charge.

Who can I contact if I have questions about the possibilities of NFON APIs?

You are welcome to contact integration@nfon.com with your request.

How can I stay up to date for any API news?

Subscribe to our newsletter by sending an email to integration@nfon.com

Success stories: Hear directly from our partners

The NFON API impressed us with its clear structure and high reliability. Thanks to the flexible interfaces, we were able to efficiently implement our ideas and automate processes that were previously very time-consuming. This led to the creation of our own tool, Portalblitz, which significantly simplifies the management of extensions, groups, queues, and time schedules.
Thanks to the NFON CTI API, we were able to seamlessly connect our PowerWeiss software with NFON Cloud Telephony in a very short time. The simple integration enabled us to quickly offer our customers real added value.
For us, connecting the NFON APIs to our CRM system SYNCCESS worked without any problems.

Ready to make every call a great one?

Get in touch