[otrs] Create customer in Phone View

Hi all, Is there a possibility to create a new customer from within the Phone View? I have a sort of helpdesk situation here where a customer can call to report a problem. If this customer has never called before the helpdesk person needs to create a new customer entry. It would be a lot easier to do this from within the Phone View right away instead of going to the Customer interface and doing it from there. I had a thorough look through the code but until now I have not been able to find it. Am I missing something or do I need to build this myself? Thanks for your time. Kind regards, Tom Hesp