If CTI Data Connector - TAPI Link or CTI Data Connector - Skype for Business Link is used, you need to uninstall the application on each computer.
You can uninstall CTI Data Connector for Salesforce® using Windows Programs and Features. Select Control Panel, click on Programs and then click on Programs and Features.
You will find CTI Data Connector for Salesforce® in the program list. Select it and then click Uninstall.
Uninstall the CTI Data Connector SoftPhone application (Setup / Installed packages). Fields and objects of this package are deleted and the content is lost.