[Asterisk-Users] gateway VoIP h323

[Tjapko Smits]

Hello list, In the h323.conf file there is an explanation towards a 
[det-gw].  The context mentioned here is detroit.
context=>detroit. Can somebody give me an example what I need to put in 
this context if det-gw is a VoIP gateway at address 200.200.200.200 and 
I like to forward all incoming VoiP calls  starting with a 9. There is 
no such a thing in the h323.conf about this context. I am kinda stuck here.
Kind regards, Tjapko.