Extension Security - Numbers & Letters

Guys - I have a very strange issue.

I am using Sipura 3K boxes with FreePBX, and now it turns out that new extensions require at least two numbers and two letters in their security.

Not a bad idea, however, with the Sipura, it will register but only allow me to make outbound calls (and not call it - where a phone is attached). I was able to verity this by switching the SIP id to a legacy were I had used 6 numbers (and no letters).

So… is there a way for me to disable this restriction (at least for these extensions)?

Thanks in advance -