asterisk users - Apr 2006 - extensions.conf - switch => statement?

Hi all

I'm trying to understand what the switch => statement in the extension
plan
exactly does.
Unfortunately it seams to be very badly documented. There's allmos noting 
about it in o'Reilly's Asterisk Book. Nothing in the shipped /doc,
nothing on
voip-info.org.

Even with google I found ony very few infos.

So can somebody explain?

I got two Asterisk Servers running because I have to run two different 
versions. One with 1.2.6 where MeetMe is OK but BriStuff is not working, and 
one with 1.2.4 where BriStuff ist OK but MeetMe would crash. I wonder if I 
could 'share the dialplan between these machines' as 'switch' is
explained in
the examples. But how do I do that exactly?

Mit freundlichen Gr?ssen

Benoit Panizzon
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