CTI Server Help:
Beta Features

Include/configure Server Journal in CTI Clients

Hint: The Client must have read permission on the Server-Journal.

The function is currently still in beta stage, and must be unlocked in the CTI Client at: [Options > Administration > Advanced Settings > CTI Server.mainJournal (Beta)]. For this purpose, the CTI Client may need a restart with admin rights. 

Then you can link the CTI Server Journal by [Options > Journal].