No I just left the dial plans as default. It doesn’t matter what I dial!!!! As long as it starts with * and ends in #.
One thing I have had not much success with is changing the dial tone and ring length, in Australia the dial tone
sounds like a “happy cat” and the ring is twice followed by a pause.
I could do a screen capture of the /DEV page and post it on some spare webspace I have if you want to see what