asterisk users - Apr 2006 - for review

I made an edit to the wiki:

http://www.voip-info.org/wiki/view/Asterisk+tips+campon

While I need this solution, and I think that some other people can 
benefit from various aspects of it, can anyone see if there is a more 
elegant solution to achieve the same result?  Please feel free to edit 
that example so it is the best for everyone, I'm a true amateur, and I 
think that example needs a lot of help.

Thanks

Miles