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Unified Communications

Communication and collaboration in the next normal

Flexible and location-independent workplace and working time models, as well as the rapid digitization of all areas of life, present companies with major technical, legal and organizational challenges in ensuring communication and collaboration with colleagues, business partners and customers. With applications for unified communications, companies can lay the foundation for future-proof communication and collaboration.

What is unified communications?

Unified communications stands for combined communications. The previously separate communication worlds of the PC and telephone now flow together in a single application. Possibilities exist for telephony, messaging, text, audio and audio/video chats within a company, as well as beyond its borders via federation technology – UC combines all of this in one interface for all devices. The integration of communication functions into existing business processes combines important work steps and completes the range of UC. 

Why are more and more companies using UC?

UC enables flexible workplace and working time models, creates the technical requirements for the use of all business communication channels, including in mobile environments, and supports compliance with the legal framework. It brings together different communication channels in a uniform application landscape and integrates them with relevant business applications to enable time- and location-independent collaboration. UC software products from estos make this possible.


estos product portfolio

Unified communications components from estos
Computer Telephony Integration (CTI)

Computer Telephony Integration (CTI)

Flexible, cloud-ready telephony solution components – for the desk phone at the workstation, for softphone users or for connecting a smartphone via Bluetooth to the PC. Learn more



The full bandwidth of the asynchronous message world. From e-mail to fax, SMS and voicemail – all from one application. With integration into the leading groupware solution. Learn more

Presence Management

Presence Management

Accurate presence information for all contact persons – internally, externally, via federation. Calendar view option from colleagues and partners. With individual authorization levels. Learn more

Text and Audio/Video Chat

Text and Audio/Video Chat

Real-time communication via text chat and browser-based audio/video chat. For professional customer service with ad hoc contact via the company website. Try now



By means of federation, companies optimize their external cooperation. They can network with partners, suppliers and customers based on open standards and secure protocols across their own company boundaries. Learn more

Platform-independent Access, Across Devices

Platform-independent Access, Across Devices

Whether as an app for the smartphone, Mac or Windows PC: Mobile workers have secure access to required company data anytime, anywhere. So you can also work efficiently, even while on the move.

Business Process Integration

Business Process Integration

By integrating communication functions into existing business processes, an employee will already have all valuable information about the caller when the call is received. For efficient communication skills. Learn more

Video conferencing

Video conferencing

Meeting solutions combine communication, collaboration and content sharing to enable virtual meeting scenarios. This enables companies to ensure flexible and location-independent workplace and working time models. Learn more

ProCall Enterprise – unified communications & CTI software suite

Flexible and location-independent workplace and working time models, as well as the rapid digitization of all areas of life, are presenting companies with ever greater technical, legal and organizational challenges. With its proven UC functions and the ability to integrate business processes, ProCall Enterprise reliably simplifies communication within the company and across company borders, regardless of location.

More about ProCall Enterprise


ProCall Voice Services the cloud telephone system for ProCall Enterprise

ProCall Voice Services is the new cloud telephone system from estos. As an add-on, it extends the proven unified communications & CTI software ProCall Enterprise with business telephony functions from the cloud.

ProCall Voice Services means communication and telephony from a single source.

More about ProCall Voice Services 

ProCall Meetings online meetings and video conferencing with ProCall Enterprise

ProCall Meetings is an add-on to ProCall Enterprise and enables the easy organization and holding of online meetings and video conferences with up to 15 participants without downloads and plug-ins. Through integration with ProCall Enterprise, scheduled or ongoing online meetings flow into the presence management system.

More about ProCall Meetings

ProCall Analytics Analysetool

ProCall Analytics the analysis tool for ProCall Enterprise

ProCall Analytics is an add-on for ProCall Enterprise that presents your communication data in clear dashboards. This way, you get a quick overview of potentials and bottlenecks in communication-intensive processes and make better decisions.

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ProCall DataCenter – UC & CTI for large companies and corporations with multiple locations

ProCall DataCenter is a multi-server environment for complex requirements. Efficiently organizing employee communication and collaboration poses technical, legal and organizational challenges, especially for large companies and corporations with multiple locations. With proven UCC functions and special methods for failover, multisite and multiserver operation, ProCall DataCenter offers a solution here.

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ProCall Business – the compact solution for unified communications & CTI (up to 50 users)

ProCall Business bundles the most important features from classic CTI and selected unified communications functions to optimize communication and collaboration in companies with up to 50 users. The compact ProCall Business communications package is also characterized by particularly simple commissioning and flexible licensing, which can be expanded at any time on a per-user basis.

More about ProCall Business

Realize the full potential of a unified communications solution


ECSTA series

Die ECSTA Serie ermöglicht das Anbinden von Telefonanlagen von verschiedenen Herstellern

Learn more about ECSTA



MetaDirectory binds contact data and is indispensable for business process integration.

Learn more about MetaDirectory



ixi-UMS enables the additional use of fax, voice and SMS.

Learn more about ixi-UMS