Billion 5100 and iChat AV?

[Andrew Nielsen]

Hi, does anyone have details of how to configure a Billion 5100 ADSL 
router to work with iChat AV?

I'm trying to chat with someone who has one of those routers.  I know 
my configuration (of a different router) works here, so I believe the 
problem is at his end.  Text chatting works fine.

Thanks in advance for any tips you can provide.  BTW I've read 
Apple's pages on port forwarding too...
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Andrew Nielsen  <mailto:[EMAIL PROTECTED]>