>>>>> Dushyant Godse <[EMAIL PROTECTED]> wrote: > I am trying to analyze deployment of a B2BUA NAT equipment to be > deployed as part of a solution. My SIP end point are deployed (as in > home agents) deployed behind a NAT/firewall and sends messages across > the B2BUA NAT device to SIP Servers/registrars located in the public > network. Are there known limitations to the kind of sip end points that > be used? Should sip end points specifically support symmetric RTP and > SIP?
Symmetric SIP and RTP (i.e. announce the same address (host:port) which will be source address) is really important for work behind NAT because allows simple detection of external address directly from recvfrom() :) Otherwise both sides shall implement STUN (not working for all cases), ICE (cumbersome) or similar horrible approach. But if your "B2BUA NAT device" (what's this???) sits on NAT border and proxies RTP, none of this is really needed. -- Valentin Nechayev PortaOne Inc., Software Engineer mailto:[EMAIL PROTECTED] _______________________________________________ Sip-implementors mailing list [email protected] https://lists.cs.columbia.edu/cucslists/listinfo/sip-implementors
