You could simply let the RTP traffic to flow directly between FS and endpoints (no need for rtpproxy). All you need to do is: - forward the appropriate RTP ports to FS; - fix the private IP in SDP by replacing it with the public IP for the inbound rtp streams (to FS).
-ovidiu On Mon, Feb 16, 2015 at 11:30 AM, Giovanni Maruzzelli <gmar...@gmail.com> wrote: > dear Kamailians, > > I have Kamailio+rtpproxy in front of FreeSWITCH. > > Kamailio and FreeSWITCH are on the same private network. > Public Internet IP address ports are redirected to Kamailio and > rtpproxy (same situation as in Amazon EC2). > Clients comes from Internet, and make calls to Internet, SIP signaling > passing through FreeSWITCH (eg: A leg incoming INVITE, FreeSWITCH > originate an outbound B leg INVITE, and then bridge the legs). > > Using rtpproxy with -A "advertise" patch from Daniel, this topology > works fine in a "traditional" telco way: rtp goes from caller to > rtpproxy to callee, and viceversa. > > Now I want to maintain FreeSWITCH in the middle of rtp flow all the > time, in a pure b2bua way, so it can control and analyze the media > streams. > > So, I need rtpproxy to act paying attention to direction, as in > caller->rtpproxy->freeswitch->rtpproxy->callee (and viceversa). > > Normally I would use Kamailio multihomed and rtpproxy in bridging > mode. But I cannot have a NIC on the public address. > > How I can use the "ie" "ei" feature of rtpproxy in an Amazon-EC2 like > environment? (eg: no public address attached to machine, but ports > redirection from public address). > > I read this trick from Hugh Waite: > > "I have used rtpproxy (with the advertised address patch) in Amazon to > bridge media between internet facing and private subnets in a VPC. > I found that I couldn’t use different advertised addresses depending > on which direction the signalling was going on a single private IP > address. I worked around this by allocating a second private ip > address to the instance and used that in the ‘bridge’. > -A 54.86.X.X/10.0.1.15 –l 10.0.1.10/10.0.1.15" > > Can you explain how to use this trick, or another way (without > additional addresses is gladly accepted!) to reach the same result > (rtp always passing through FreeSWITCH) ? > > Thank you all in advance, > > -giovanni > > -- > Sincerely, > > Giovanni Maruzzelli > Cell : +39-347-2665618 > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users -- VoIP Embedded, Inc. http://www.voipembedded.com _______________________________________________ SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
