Number used for outgoing calls from a ticket

In fact, when calls are made from a ticket, the outgoing number noted first in the list is always dialed, regardless of whether another is selected in advance.

The outgoing number can only be dialed manually if the call is made via the "Enter number" menu item. This opens the Talk widget, where the phone number must be inserted manually. 

This is not really purposeful for assigning the correct contact person. The call must be made from a ticket, otherwise a new ticket will be created and not noted in the same ticket.