UCC software for your company
ProCall 8
says Hi!
More than 20 years of user-oriented innovation have gone into the 8th generation of our Unified Communications (UC) solution for SMEs. ProCall 8 can be seamlessly integrated, is device- and location-independent and has state-of-the-art business telephony features as well as exciting add-ons. It’s all
about empowering users to communicate and collaborate with ease.
Integrated wherever you are – even in your favorite app.
ProCall in Microsoft Teams
Experience Microsoft Teams even better: Your business telephony with presence display, your ProCall chat and your contacts are integrated in the Microsoft Teams interface.

ProCall app for iOS and Android
With ProCall Mobile, you always stay connected on your iPad, iPhone or Android devices. Simply download, log in and experience how connected mobile working can be.

ProCall for your office
As a desktop application, web app or without installation in the browser: ProCall is designed to support your processes and ensure smooth collaboration.
How do you want to communicate today?
Amp uo ProCall with powerful add-ons
We bring all your communication channels together in one application that follows you everywhere.
Communication and Collaboration
ProCall
Optimize your communication with our presence management. Precise information on availability, automatic updates via the calendar, integration with Microsoft Teams and customizable status messages ensure you choose the right channel in every situation.
Connecting telephone systems
ECSTA
Whether your telephone system is on-premises, in the cloud or both here and there: ECSTA integrates your telecommunications seamlessly into your IT infrastructure. Enjoy the flexibility to change your provider, expand your systems and integrate your branch offices. Scalable, investment-proof and ideal for multi-provider and multi-site configurations.
Software for secure video conferencing
ProCall Meetings
Corporate communication is becoming increasingly versatile – both internally and externally. As an extension of our ProCall UCC Suite, ProCall Meetings enables users to effortlessly organize and conduct online meetings and video conferences. Participation is seamless – no software downloads or plug-ins are required.
Artificial intelligence
ChatGPT
Communicate directly with ChatGPT in your ProCall chat environment and receive intelligent support in your tools. This allows you to streamline communication, automate routine tasks and simplify decision-making. For intuitive use, a smooth customer experience and increased productivity.
Contact management database
MetaDirectory
Imagine all your contact data from Microsoft Dynamics, SAP, Salesforce, Office 365, DATEV pro and other ERP/CRM or collaboration solutions in a single directory: That’s exactly what MetaDirectory is! With one click from ProCall, you can call each of these contacts directly. For incoming calls, you can immediately see who is behind the phone number.
Unified messaging
ixi-UMS
ixi-UMS integrates fax, voice and SMS messages in environments such as Microsoft Exchange or HCL Domino. The modular unified messaging solution thus extends existing messaging systems with modern, future-oriented functions: All classic communication channels are then united under one interface.
Mobile Unified Communications
ProCall for Apple CarPlay
With Apple CarPlay, the ProCall app for iOS displays calls on the screen of your vehicle and thus enables calls via touch or Siri even while driving. The integration offers considerable added value for users in company cars.
Features for everyone.
600,000+ users

Audio and video communication
Increase your efficiency by enabling real-time collaboration, clear communication and faster decision-making.
Screen sharing for video telephony
Convey your ideas visually in real time and improve understanding and communication.
Instant messaging and chat

Computer-telephone integration (CTI)
Automate call handling, reduce manual tasks and allow employees to focus on more critical tasks.
Softphone functions (SIP)
Reduce the need for physical phone hardware and lower communication costs – especially for long-distance and international calls.
MultiVendor telephone systems
Integrate almost any telephone system – whether in the cloud or on-premises.

Increase sales through better contact
Publish your multi-media business cards online, respond to customer inquiries more quickly and increase your conversion rates and sales.
Networking across locations
Display presence information across locations to support location-independent, flexible working and meet the needs of your employees.
Make external collaboration easy
Combine your internal data with supplier, customer and partner contacts and ensure smooth processes.
Introducing ProCall Infinity for unlimited scalability

estos Multi X
Strategy for
scaling
Our Multi X Strategy includes the factors multi-server, multi-site, multi-provider, multi-device and multi-cloud. It offers limitless scalability and flawless integration – regardless of size, phone system, location, device or cloud.
With multi-benefits
MultiServer
Users on different servers interact seamlessly; the system can be managed by multiple administrators.
MultiSite
Integration is easy – even with geographically distributed servers; users at different locations have access via a virtual connection.
MultiVendor
MultiDevice
MultiCloud
Always available,
always secure
Our uniquely modular UCC solutions can be scaled effortlessly – with servers per location or 2,500 users. They can be integrated into REDIS, SQL and Active Directory, enabling standardized, cross-system communication.
Ensure constant
availability of UC&C – with our SLA.
All data is hosted in data centers
in Germany and the EU.
1,700,000+ users
already rely on estos.
UCaaS? ProCall NEX!
The perfect solution for anyone who wants to benefit from 100% UC as a service: Cloud-based telephone system + cloud business telephony + updates included. Exclusively for Germany, Austria and Switzerland.