If i understood well, you cannot do it now because the telephone set is locked with a code. It's because, you could make a call using redial key option in dbc 213 telephone set that appears when you press nlog key.
Forbidden to dial, forbidden to redial.
Unfortunately you must to print with the command AUCOP or auth_code and see the code affiliated to the extension to unblock it and see it.
I hope it helps you.