On Mon, Jun 15, 2009 at 3:48 PM, M. Ranganathan<[email protected]> wrote: > On Mon, Jun 15, 2009 at 3:31 PM, Robert Joly<[email protected]> wrote: >>> Hello all! >>> >>> There was a thread some time ago about relay free sipxbridge >>> operation and recently there has been a thread on sipx >>> federation. I wonder what you feel about the following. >>> >>> Say you wanted to tie system A and System B together. System >>> A is the "server" in this case and is providing NAT >>> compensation to its remote workers. System B can be >>> configured using sipxbridge to look like a remote worker to system A. >>> >>> Clearly we don't need two media relays between the systems. >>> If we can support an option to suppress relaying of media, >>> then system B looks like a remote worker to system A. >>> >>> When a request originates from System B bound for system A >>> via sipxbridge, its contact and Via would get re-written but >>> sipxbridge would leave the SDP alone. >>> sipxbridge on system B can forward REFER after appropriate >>> re-writing of the request as it is aware that is talking to >>> another sipx system that is capable of handling that REFER. >>> >>> It seems to me that this should be relatively easy to support >>> in sipxbridge. Will this scheme work in principle, as a >>> possible solution for federating systems? If not, what is >>> wrong with this? >> >> I'm a bit confused by the description and I'm not sure why you would >> want to use sipXbridge to connect two sipXecs systems in the first >> place? We recommend to do this with site-to-site dialplans and the >> existing remote-worker solution has mechanisms in place to avoid doing >> the double-relaying. What real-world problem are we trying solve? > > It is quite possible that a mechanism already exists and that I just > do not understand it so please help me understand : > > When a remote worker phone registered at site A wants to do a call to > a phone registered as a remote worker on Site B, could you please > tell me how it would proceed ( what would be the call flow and how do > you avoid relaying media twice?). > > > > Thanks in advance. > > Ranga
Another question I have in my mind is : If you have two systems behind NATs each with a domain name sixp.example.local ( perfectly legal ) and you want to federate them in the manner you are describing but without a B2BUA, will one system not ge confused by the From header of the other? And another question I have is about request size but we can put that aside and assume for now that we can use a TCP connection between the two. Regards Ranga > >> >> > > > > -- > M. Ranganathan > -- M. Ranganathan _______________________________________________ sipx-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-dev Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev sipXecs IP PBX -- http://www.sipfoundry.org/
