I'm Australian. If you call local numbers you dial 0xxx xxx xxx. If you call the same number internationally then you dial +61xxx xxx xxx. Therefore, the first 0 needs to be stripped and replaced with +64. I can see that I can add the +64 but the number rewriting doesn't seem to let me specify to only strip the FIRST 0. If I put 0 in the number rewriting then it strips ALL 0's from the phone number.
How do I fix this?