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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.


Kertész Kabel AG is one of the leading cable providers in Switzerland with more than 60 employees. The company stands for the consistent and innovative implementation of quality in both products and services.

Daniel Kertész, Managing Director of Kertész Kabel AG: "The contact portal offers us virtual contact with the customer. We are able to advise the customer better because we have personal contact - we have the opportunity to discuss things better, to understand his needs exactly and then refer him to the appropriate products and services."

ESWE Versorgungs AG 
Industry: Energy service provider
Products used: ProCall Enterprise, MetaDirectory and ECSTA series

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 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 in the use of estos software are optimal here.


Vaillant Group
Industry: Manufacturing industry 
Products used: ProCall Enterprise

Vaillant supplies its products through a wide network of wholesalers distributing thermo-hydraulic material. Since February 2015, Vaillant has decided 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
Industry: Car dealership
Products used: ProCall Enterprise, ProCall Analytics and ECSTA series

Sesto Autoveicoli is one of the largest Italian car dealers distributing Audi and Volkswagen 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

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Reference reports
Heute GmbH

Industry: Mechanical engineering
Products used: ProCall Enterprise, MetaDirectory and ECSTA series

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 now be accessed more quickly:

Read reference report 


Industry: Wholesale
Products used: ProCall Enterprise, MetaDirectory and ECSTA series

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 (coming soon)

Kraus & Naimer GmbH

Industry: Electrical industry
Products used: ProCall Enterprise, MetaDirectory and ECSTA series

Kraus & Naimer Produktion GmbH wanted to merge the communication between 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 (coming soon)

Steinböhmer GmbH

Industry: Car dealership
Products used: ProCall Enterprise, ProCall Analytics, MetaDirectory and ECSTA series

The car dealership Steinböhmer GmbH & Co.KG planned to improve communication with customers and also between 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 (coming soon)

Rivella AG

Industry: Consumer goods industry
Products used: ProCall Enterprise and MetaDirectory

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

Read reference report

Himmelsbach & Streif

Industry: Tax consultancy
Products used: ProCall Enterprise and MetaDirectory

Himmelsbach & Streif GmbH, as a renowned tax consultancy and auditors, wanted to effectively ease their 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 (coming soon)

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