On 04.12.2012, at 02:01, Juha Heinanen wrote: >> This done in the SBC profiles. It is a simple parameter. You can >> specify it for either (or both) side. > > it means that sbc needs to get involved even when call terminates to > announcement, voicemail, etc. application in seems.
Not exactly. In the case of applications that terminate a call, this would not be necessary, as we can determine the interface through other means. This is only necessary for outbound calls, as done by the SBC, for example. >>> by the way, cisco ios gateways implement ANAT (rfc 4091), which allows >>> sdp stream contains both ipv4 and ipv6 media address. that would be >>> useful in sems outbound calls too. >>> >> Yes, indeed. In the RFC it says: "obsoleted by RFC5245 (ICE)". Do you >> think I could still consider it as relevant, or just as legacy? > > there are lots of legacy sip clients that don't support ice (which is > very complex to implement). if sems would use anat to include both > addresses in sdp, then the sip proxy that forwards the call and knows ip > version of callee, could easily strip the other address away and callee > would receive a normal non-anat sdp. Ok, that sound like something I could live with. -Raphael. _______________________________________________ Semsdev mailing list [email protected] http://lists.iptel.org/mailman/listinfo/semsdev
