Bild von Sjoerd Girkes der einer Person etwas in der Telefonanlage erklärt

API – Application Programming Interface

Integration into your existing software landscape

Feature Overview

API – Application Programming Interface

The Application Programming Interface (API) allows your telephone system to communicate with your existing software landscape. This allows you to integrate third-party systems into your telephone system as well as control the telephone system from your applications.

Connection of your systems

With the API you can connect different systems with your telephone system and thus bring more efficiency into your daily work.

CRM system

The Customer Relationship Management System is a program in which you collect details about your customers. This means that the software stores information about each customer, which can include name, position, company and telephone number, among other things. The integration of this system into your telephone system is the most frequently used function of the API.

Other Systems

In addition to a CRM, other applications can also be connected to your telephone system via the API. In addition to other applications that store your customers’ contact information (e.g. Outlook), you can also connect your specific industry solutions that you use specifically for your company. In addition, it is also possible to connect support software or special programs for evaluating telephony.


By integrating your software landscape into the telephone system, new possibilities are available to you. Especially the integration of your CRM systems or other software, in which the contact data of your customers are stored, offers you very useful functions.

Click To Dial

The Click To Dial function allows you to make a call directly from your telephone system by clicking on the telephone number of a customer in your system.

Reverse Lookup

The Reverse Lookup function automatically opens the contact when a call is received from a customer stored in your database and you can view the information entered. This makes your customer contact even more personal and competent.

Compatibility with your system

Because we provide a widely used standard API, there is a good chance that your software already supports our API. If your system is compatible with our API, you can test it with a free Demo-Zugang.

Advantages of the API

You get meta information about your customers through the API, which creates a personal level. You also save time on your calls by having all available customer information at your fingertips.
The API offers you an efficient and professional handling of your calls, which creates satisfaction on both sides.

What are the costs for the API?

The API function is available to you in the Premium Package without limit and with any number of software connections.


  • Our API is the interface between your PBX and your existing software landscape.
  • Integration of your CRM system and other systems.
  • Extended functions for a personal and competent customer contact.
  • The API is available in the premium package.
Dominik Mauritz

Dominik Mauritz

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