Javascript is deactivated and some parts of the website will not work. Please activate Javascript.

UC & CTI Sofware-Products 

ProCall Enterprise, MetaDirectory, ECSTA series and more….

UC & CTI software products from estos improve communication and collaboration in companies. Our portfolio includes software for Unified Communications (UC) and Computer Telephony Integration (CTI): the bestseller ProCall in various versions, CTI middleware products for connecting telephone systems and MetaDirectories for processing contact data. With the cloud-based conferencing solution meet (beta), we are trying new technologies for collaboration. For Lync and Skype for Business from Microsoft, we offer special applications.

UC & CTI Software-Product overview

Unified Communications for multi-user workplaces

ProCall Enterprise

The bestseller ProCall Enterprise is a Unified Communications Suite featuring CTI, presence management, Instant Messaging and video chat, and many other functions to improve collaboration as well as the option to network with other companies.

With clients for Windows, Mac as well as native apps for the iPhone, iPad and Android smartphones.

ProCall Enterprise

Unified Communications for single-user workplaces

ProCall One R2

ProCall One R2 is the ideal office productivity software for single-user workplaces, small offices and home offices. It offers Computer Telephony Integration (CTI), contact data search and management, a call journal and enables an optimized collaboration with business partners and customers as communication processes are simplified.

ProCall One R2

CTI - integrate telephone system

As professional CTI middleware, the products from the ECSTA series connect your telephone system or telephone with the IT world. It translates protocols specific to telephone systems (CSTA) for the Microsoft Windows world (e.g. TAPI). 


The TapiServer is our favorite classic. It enables convenient administration and distribution of TAPI lines in the Microsoft Windows network. It is available from selected qualified partners.   

Integrate and synchronize contact data

The MetaDirectory is a LDAP server for fast access to contact data. It unites different contact data sources into a single consistent LDAP directory that can be used throughout the company.

It is available in three editions for different demanding application areas.

MetaDirectory Enterprise


Online meetings without barriers. For collaboration with interested parties, customers and partners we provide you with, our webRTC-based cloud service for small audio/video conferences and presentations, to try out for free as part of the beta test.

Modules for Microsoft Skype for Business

We have been developing software modules for Microsoft Skype for Business (Lync) and previous systems (OCS/LCS) since 2005. If you want to dial via a hotkey, use your existing phone system with Remote Call Control (RCC) or use contact data from CRM/ERP applications or specialist applications with Skype for Business, we can provide you with the right software.

Contact Kit



ProCall Analytics

ProCall Analytics is an optional module for ProCall Enterprise for the graphic representation and analysis of communication data.

Detect bottlenecks and potentials and optimize your processes

ProCall Analytics

ProCall LiveChat

ProCall LiveChat turns your website into a communication portal with multimedia business cards for your employees.

With presence information, Instant Messaging and video chat functions.

ProCall LiveChat

Are you looking for older product versions from estos?

Then please click here.


Older product version