The workstation software for estos ProCall is installed with a Microsoft® Installer package. This msi can be directly executed, started with msiexec or distributed via a group policy.
Languages
The msi user interface is available in one language. The software installed with msi is installed in all available languages.   
Command line under Windows®
If you run setup with msiexec.exe and use the option /q (quiet without interface), it must be started from a shell with administrator rights (elevated).
Examples of the command line
Special MSI properties
All of the following properties are listed in AdminProperties and thus also available for an administrative installation. 
| Property | Value | Description | 
|---|---|---|
| CTISERVER | Hostname or IP address of the server | |
| CTISERVERUSEDNS | DNS Service Location Record Option | |
| 0 | Disabled - 'CTISERVER' is used (default) | |
| 1 | Enabled - Use DNS, 'CTISERVER’ will be ignored | |
| CLIENTCTIMAIN | Install ProCall application | |
| 0 | Do not install ProCall UI application, only the advanced Remote Tapi driver will be installed | |
| 1 | Install ProCall application as normal (default) | |
| CLIENTTSP | Which Tapi driver is being installed | |
| none | Do not install a Tapi driver | |
| edial | Install the client Tapi driver (default) | |
| eclient | Install enhanced remote Tapi driver | |
| OUTLOOKADDIN | Install Outlook® AddIn | |
| 0 | Do not install Outlook® AddIn | |
| 1 | Install Outlook® AddIn (default) | |
| ACUSERVICE | The service for automatic updates is installed | |
| 0 | Do not install service for automatic updates | |
| 1 | Install service for automatic updates (default) | 
Version 8.3