The call was only routed to the Phone port, so recheck the forwarding settings; perhaps they were not saved.
However, I wouldn't push my luck to get DTMF through that path. Just temporarily disable SP2 and set up a softphone or other device at your present location to register to that account. You should then get the verification call directly.
Good idea, thanks. I disabled Callcentric on the Obi and set it up on X-Lite on my computer, verified the number and put everything back.
Tom