On Tue, Sep 23, 2008 at 11:20 AM, karthik karthik <[EMAIL PROTECTED]> wrote: > Hello, > Here is a question which I have for long time. > What is the prupose of having B2BUA? > I know that the B2BUA changes from tag, > callid and maintains a seperate dialog when to tag is received. > > But why it does change in these headers? > Some say it is for security reasons? > If yes how is it used for security. We also have NAT for security. > > Some say it is for manipulation of supplementary services. If yes, > cant a statefull proxy handle the services > without changing call-id, from tag and to tag?
Check it out: http://www.radvision.com/NR/rdonlyres/733FD7B3-053E-409B-A385-4820BEA0EDFD/0/B2BUASIPServersWhitePaper.pdf Cheers, -- Victor Pascual Ávila _______________________________________________ Sip-implementors mailing list Sip-implementors@lists.cs.columbia.edu https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
