ProCall Business system requirements
December 2021. Version info: ProCall Business 21H2
maximum 50 users/50 lines
Operating system
UCServer (Business)
Supports 64-bit Microsoft Windows systems
Server operating systems | End date for support |
|---|---|
| Microsoft Windows Server® 2022 | 13/10/2031 |
Microsoft Windows Server® 2019 | 9/1/.2029 |
Microsoft Windows Server® 2016 | 11/1/2027 |
- No support for terminal server/Citrix environments.
- Installation only on computers without existing estos software.
- Components cannot be installed on different computers (distributed).
- The UCServer requires an HTTPS connection to the estos UCConnect on the internet via port 443 during installation and operation.
Software virtualization
- Microsoft Hyper-V
- Citrix XenApp/XenDesktop (mit HDX)
- VMware Horizon (VDI)
ProCall client for Windows (Business)
Microsoft Windows
Supports 64-bit Microsoft Windows systems
Client/workstation operating systems | End date for support |
|---|---|
| Microsoft Windows 11 | n/a |
Microsoft Windows® 10 (from Version 1903)  | 14 October 2025 |
The supplied client TAPI driver, which can be installed optionally, is also available in full for 64-bit systems and is installed automatically in the respective version.
Centrally rolled out installation
A central installation rolled out from the server is not possible on this operating system due to the lack of administrative permissions.
- Microsoft Windows® 10 Home
Restrictions for Microsoft Windows® 10 versions
Please refer to our Notes on the support of the Microsoft Windows 10 operating system and changes within individual versions (builds)
and Known issues and limitations on Windows 10.
Android
Operating system | End date for support |
|---|---|
| Android 11 | n. a. |
Android 10 | n. a. |
Android 9 "Pie“ | n. a. |
iOS
Operating system | End date for support |
|---|---|
| iOS 14 | n. a. |
iOS 13 | n. a. |
| iOS 12 | n. a. |
Databases for UCServer
- SQLite
Conversion to an SQL server is not possible.
Licenses
Licenses for ProCall Business
Online licensing via UCConnect
Connection to the license server
The ProCall Business server requires an HTTPS connection to the estos UCConnect on the internet via port 443 during installation and operation.
Hardware recommendation for system expansion (minimum)
Server
- Registered users: 50
- CPU*: 2 cores, 1,9 GHz
- RAM: 8 GB
- Hard disk: 10 GB
- Network: 50 Mbit/s
* Processor needs SSE support
Windows client workstation
- CPU: 2 cores, 2 GHz
- RAM: 150 MB
- Hard disk: 300 MB
- Network: 50 Mbit/s
Supported third-party products/interoperability
For further information on supported third-party products and interoperability details for e.g. groupware systems, headsets, PBXs please click here:
Supported third-party products