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hisham.khartabil@nokia.com wrote:
What ever happened to Application Servers??
/Hisham
Well, if dynamicsoft's SIP Application Server acts as a B2BUA, then it's
actually two (or more) different UA threads connected by a Java program.
What does the Java program do? Anything it wants to -- since it's Java,
by definition it's a 500-pound gorilla, so the punch line applies ;-).
Seriously - -
If an INVITE is received by one of the UAs, is it retransmitted by the
other(s)? Maybe, if the application is written to do that. If it wasn't,
would this break other applications trying to use the B2BUA as a proxy?
Yep, sure would. That's why it isn't a proxy -- it doesn't meet the
rules of being a proxy, so guess what -- A B2BUA that doesn't obey all
the rules of a proxy IS NOT A PROXY and by definition WILL BREAK some
applications that would have worked through a proxy.
That's why B2BUAs must be used VERY CAREFULLY, in LIMITED ENVIRONMENTS,
by TRAINED PROFESSIONALS ONLY. Don't try this at home kids, your calls
might not go through!
Somebody ought to collect all the B2BUA discussions off of this list and
make some kind of a book out of them . . . of course, nobody would ever
read it, since they don't seem to read the discussions the first time
around.
--
Dean
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