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References and testimonials

The focus is on you: Users who use our software every day, the decision-makers of the companies who deploy our software, the partners who market our software.

They speak for themselves.

You make us proud. We value customers and partners who are convinced of our products after a few months of use. They give us the opportunity to present proven application cases of our software in practice so that interested parties can form an opinion. 

Here you will find a current overview of reference companies as well as reference and video reports of all those customers and companies that have decided to use our software and would do it again.

ESWE Versorgungs AG

ESWE Versorgungs AG is a modern energy service provider with more than 87 years of history. ESWE supplies its customers with electricity, natural gas and district heating in the Wiesbaden area and also enjoys a very good reputation all over Germany. ESWE has been using estos' Unified Communications & CTI software for a long time. Since ESWE attaches a high priority to professional and fast customer service, the advantages of the estos software products are optimally used here.

Vaillant Spa

Vaillant supplies its products through a wide network of wholesalers distributing thermo-hydraulic material. Since February 2015, Vaillant hasdecided to implement the ProCall Enterprise suite in their office; by doing this, all the information about a caller’s identity is immediately displayed on the desktop. Its native integration with Salesforce allows the creation of a new activity, and share it in real time during a conversation directly from the ProCall pop-up window.

Sesto Autoveicoli

Sesto Autoveicoli is one of the largest Italian car dealers distributing AUDI and Volkwagen brands to the automotive market. ProCall 5 Enterprise has been easily integrated within the existing technology infrastructure, and the integration process between the PBX, Microsoft Active Directory and their existing CRM application (thanks to MetaDirectory) has been successfully implemented in a smooth and seamless way. 

Other reference videos

Watch our other videos from recent years.



Reference reports
Heute GmbH

Heute GmbH was looking for ways to connect processes and thereby reduce the workload for employees. You can read here how this was achieved and how customer data can be accessed quickly today:

Read reference report 


The company Reyher Nchfg. GmbH & Co. KG tried to meet the need of its sales department to integrate telephony processes into the existing IT landscape. You can read here how the company now uses SAP ERP and IBM Notes and why the solution is failsafe:

Read reference report (cooming soon)

Kraus & Naimer GmbH

Kraus & Naimer Produktion GmbH wanted to merge the communication of its two locations and therefore looked for a solution that was both multi-site and multi-vendor compliant. You can read here how this was achieved and how the employees now benefit from a standardized information service:

Read reference report (cooming soon)

Steinböhmer GmbH

The car dealership Steinböhmer GmbH & Co.KG planned to improve communication with customers and also among its respective locations. In addition, the specific databases were to be connected to different TC systems. Read here how this was implemented:

Read reference report (cooming soon)

Rivella AG

The traditional company Rivella was looking for a way to improve its communication processes sustainably and particularly to make the availability among employees significantly better. Read here how this was achieved and what features the Rivella staff particularly value:

Read reference report

Himmelsbach & Sauer

Himmelsbach & Sauer GmbH, as a renowned tax consultancy and auditors, wanted to effectively ease the communication with clients, authorities and offices for its employees. Read here which products they chose and how the existing telephone system could be maintained:

Read reference report (cooming soon)

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