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MultiVendor, MultiSite and MultiDevice

Flexibility in corporate communication – manufacturer-independent!

In recent years, the world of work has changed drastically. New work, hybrid work, or the new normal – the ability to quickly move employees to work from home has become a business-critical competency. Companies now face the challenge of transforming initial stopgap solutions into long-term, reliable, and privacy-compliant processes. Because the trend of the variable workplace is here to stay.

Flexible communication with the "multi" strategy from estos

With our "Multi" strategy – MultiVendor/MultiSite and MultiDevice – we support companies in raising their internal and external communication in the "New work" to a new level.

And this is independent of the manufacturer of the telephone systems used and connected, networked across different branch offices and locations, as well as across end devices.


Our UC & CTI software suite ProCall Enterprise combines all important communication channels in one application and can be used platform-independently and across devices. For Windows, macOS, IOS and Android.


Connect distributed locations to one and the same UCServer with the ECSTA series from estos. This allows presence and contact information to be viewed across branches.


Integrate the different telephone systems of various manufacturers into one application, whether from the cloud or on-premises with the ECSTA series from estos.




ProCall Enterprise – communicate always and everywhere


A company's communications, both internal and external, are becoming increasingly diverse. As a unified communications & CTI software suite, ProCall Enterprise therefore offers its users maximum flexibility for their daily work. Whether from the workplace or on the road, whether via PC, laptop, tablet or smartphone - ProCall Enterprise combines all important communication channels in a single application

More about ProCall Enterprise

ECSTA series - manufacturer-independent and cross-location networking


The middleware products of the ECSTA series enable communication between the telephone system and the IT infrastructure. As a result, telephone systems and connected telephones can be easily controlled from the PC. The estos MultiSite/MultiVendor strategy of the ECSTA series allows different telephone systems at several locations to be networked easily and efficiently.. 

More about the ECSTA series

MultiVendor – The diverse possibilities of estos software

Discover the various possibilities for using our software with special hardware such as modern IP telephone systems, a hybrid or classic telephone system or with SIP telephones in the IP-Centrex environment.

Learn more about how estos software can be used for CTI or UC from the cloud.


More information can be found here

I am at your disposal for further questions
Robert Weiß

Robert Weiß

Senior Director Sales DACH

Biglietto da visita multimediale